Amend init order of TPM and IMA modules #3297
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This change seeks to correct the load order of a TPM and IMA (Integrity Measurement Architecture). Currently IMA loads first, which results in it not seeing the TPM and using the TPM as a means to store measurements. The order of `core_initcall` and `subsys_initcall` are reversed within `drivers/clk/bcm/clk-bcm2835.c` and `drivers/firmware/raspberrypi.c` to achieve this. Resolves: #3291 Signed-off-by: Luke Hinds <[email protected]>
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I have two problems with this commit:
I think it would be safer to delay the clock driver to initcall_postcore, as that is less likely to have unintended consequences. |
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@lukehinds Any comment on the @pelwell comment? |
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I've added a commit that moves the clock driver to postcore_initcall. If there are no objections I'll merge this once the next stable snapshot has been taken. |
pelwell
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Waiting for internal comment
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looks good to me. |
popcornmix
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kernel: sound: Add the HiFiBerry DAC+HD version See: raspberrypi/linux#3418 kernel: Fixup rpimem to cleanly unload and reload, and make checkpatch clean See: raspberrypi/linux#3419 kernel: Amend init order of TPM and IMA modules See: raspberrypi/linux#3297 kernel: net: usb: lan78xx: Add .ndo_features_check See: raspberrypi/linux#3395 firmware: platform: Only throttle down from arm_freq firmware: platform: Bump desired ring osc to 3.7 on Pi3/CM3 firmware: arm_loader: Add 2ms delay before resetting SD_IO
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kernel: sound: Add the HiFiBerry DAC+HD version See: raspberrypi/linux#3418 kernel: Fixup rpimem to cleanly unload and reload, and make checkpatch clean See: raspberrypi/linux#3419 kernel: Amend init order of TPM and IMA modules See: raspberrypi/linux#3297 kernel: net: usb: lan78xx: Add .ndo_features_check See: raspberrypi/linux#3395 firmware: platform: Only throttle down from arm_freq firmware: platform: Bump desired ring osc to 3.7 on Pi3/CM3 firmware: arm_loader: Add 2ms delay before resetting SD_IO
pelwell
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Jan 23, 2020
The IMA (Integrity Measurement Architecture) looks for a TPM (Trusted Platform Module) having been registered when it initialises; otherwise it assumes there is no TPM. It has been observed on BCM2835 that IMA is initialised before TPM, and that initialising the BCM2835 clock driver before the firmware driver has the effect of reversing this order. Change the firmware driver to initialise at core_initcall, delaying the BCM2835 clock driver to postcore_initcall. See: #3291 #3297 Signed-off-by: Luke Hinds <[email protected]> Co-authored-by: Phil Elwell <[email protected]>
pelwell
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The IMA (Integrity Measurement Architecture) looks for a TPM (Trusted Platform Module) having been registered when it initialises; otherwise it assumes there is no TPM. It has been observed on BCM2835 that IMA is initialised before TPM, and that initialising the BCM2835 clock driver before the firmware driver has the effect of reversing this order. Change the firmware driver to initialise at core_initcall, delaying the BCM2835 clock driver to postcore_initcall. See: #3291 #3297 Signed-off-by: Luke Hinds <[email protected]> Co-authored-by: Phil Elwell <[email protected]>
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The IMA (Integrity Measurement Architecture) looks for a TPM (Trusted Platform Module) having been registered when it initialises; otherwise it assumes there is no TPM. It has been observed on BCM2835 that IMA is initialised before TPM, and that initialising the BCM2835 clock driver before the firmware driver has the effect of reversing this order. Change the firmware driver to initialise at core_initcall, delaying the BCM2835 clock driver to postcore_initcall. See: #3291 #3297 Signed-off-by: Luke Hinds <[email protected]> Co-authored-by: Phil Elwell <[email protected]>
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The IMA (Integrity Measurement Architecture) looks for a TPM (Trusted Platform Module) having been registered when it initialises; otherwise it assumes there is no TPM. It has been observed on BCM2835 that IMA is initialised before TPM, and that initialising the BCM2835 clock driver before the firmware driver has the effect of reversing this order. Change the firmware driver to initialise at core_initcall, delaying the BCM2835 clock driver to postcore_initcall. See: #3291 #3297 Signed-off-by: Luke Hinds <[email protected]> Co-authored-by: Phil Elwell <[email protected]>
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The IMA (Integrity Measurement Architecture) looks for a TPM (Trusted Platform Module) having been registered when it initialises; otherwise it assumes there is no TPM. It has been observed on BCM2835 that IMA is initialised before TPM, and that initialising the BCM2835 clock driver before the firmware driver has the effect of reversing this order. Change the firmware driver to initialise at core_initcall, delaying the BCM2835 clock driver to postcore_initcall. See: #3291 #3297 Signed-off-by: Luke Hinds <[email protected]> Co-authored-by: Phil Elwell <[email protected]>
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The IMA (Integrity Measurement Architecture) looks for a TPM (Trusted Platform Module) having been registered when it initialises; otherwise it assumes there is no TPM. It has been observed on BCM2835 that IMA is initialised before TPM, and that initialising the BCM2835 clock driver before the firmware driver has the effect of reversing this order. Change the firmware driver to initialise at core_initcall, delaying the BCM2835 clock driver to postcore_initcall. See: #3291 #3297 Signed-off-by: Luke Hinds <[email protected]> Co-authored-by: Phil Elwell <[email protected]>
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The IMA (Integrity Measurement Architecture) looks for a TPM (Trusted Platform Module) having been registered when it initialises; otherwise it assumes there is no TPM. It has been observed on BCM2835 that IMA is initialised before TPM, and that initialising the BCM2835 clock driver before the firmware driver has the effect of reversing this order. Change the firmware driver to initialise at core_initcall, delaying the BCM2835 clock driver to postcore_initcall. See: #3291 #3297 Signed-off-by: Luke Hinds <[email protected]> Co-authored-by: Phil Elwell <[email protected]>
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The IMA (Integrity Measurement Architecture) looks for a TPM (Trusted Platform Module) having been registered when it initialises; otherwise it assumes there is no TPM. It has been observed on BCM2835 that IMA is initialised before TPM, and that initialising the BCM2835 clock driver before the firmware driver has the effect of reversing this order. Change the firmware driver to initialise at core_initcall, delaying the BCM2835 clock driver to postcore_initcall. See: #3291 #3297 Signed-off-by: Luke Hinds <[email protected]> Co-authored-by: Phil Elwell <[email protected]>
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The IMA (Integrity Measurement Architecture) looks for a TPM (Trusted Platform Module) having been registered when it initialises; otherwise it assumes there is no TPM. It has been observed on BCM2835 that IMA is initialised before TPM, and that initialising the BCM2835 clock driver before the firmware driver has the effect of reversing this order. Change the firmware driver to initialise at core_initcall, delaying the BCM2835 clock driver to postcore_initcall. See: #3291 #3297 Signed-off-by: Luke Hinds <[email protected]> Co-authored-by: Phil Elwell <[email protected]>
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The IMA (Integrity Measurement Architecture) looks for a TPM (Trusted Platform Module) having been registered when it initialises; otherwise it assumes there is no TPM. It has been observed on BCM2835 that IMA is initialised before TPM, and that initialising the BCM2835 clock driver before the firmware driver has the effect of reversing this order. Change the firmware driver to initialise at core_initcall, delaying the BCM2835 clock driver to postcore_initcall. See: #3291 #3297 Signed-off-by: Luke Hinds <[email protected]> Co-authored-by: Phil Elwell <[email protected]>
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The IMA (Integrity Measurement Architecture) looks for a TPM (Trusted Platform Module) having been registered when it initialises; otherwise it assumes there is no TPM. It has been observed on BCM2835 that IMA is initialised before TPM, and that initialising the BCM2835 clock driver before the firmware driver has the effect of reversing this order. Change the firmware driver to initialise at core_initcall, delaying the BCM2835 clock driver to postcore_initcall. See: raspberrypi#3291 raspberrypi#3297 Signed-off-by: Luke Hinds <[email protected]> Co-authored-by: Phil Elwell <[email protected]>
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The IMA (Integrity Measurement Architecture) looks for a TPM (Trusted Platform Module) having been registered when it initialises; otherwise it assumes there is no TPM. It has been observed on BCM2835 that IMA is initialised before TPM, and that initialising the BCM2835 clock driver before the firmware driver has the effect of reversing this order. Change the firmware driver to initialise at core_initcall, delaying the BCM2835 clock driver to postcore_initcall. See: #3291 #3297 Signed-off-by: Luke Hinds <[email protected]> Co-authored-by: Phil Elwell <[email protected]>
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The IMA (Integrity Measurement Architecture) looks for a TPM (Trusted Platform Module) having been registered when it initialises; otherwise it assumes there is no TPM. It has been observed on BCM2835 that IMA is initialised before TPM, and that initialising the BCM2835 clock driver before the firmware driver has the effect of reversing this order. Change the firmware driver to initialise at core_initcall, delaying the BCM2835 clock driver to postcore_initcall. See: #3291 #3297 Signed-off-by: Luke Hinds <[email protected]> Co-authored-by: Phil Elwell <[email protected]>
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The IMA (Integrity Measurement Architecture) looks for a TPM (Trusted Platform Module) having been registered when it initialises; otherwise it assumes there is no TPM. It has been observed on BCM2835 that IMA is initialised before TPM, and that initialising the BCM2835 clock driver before the firmware driver has the effect of reversing this order. Change the firmware driver to initialise at core_initcall, delaying the BCM2835 clock driver to postcore_initcall. See: #3291 #3297 Signed-off-by: Luke Hinds <[email protected]> Co-authored-by: Phil Elwell <[email protected]>
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The IMA (Integrity Measurement Architecture) looks for a TPM (Trusted Platform Module) having been registered when it initialises; otherwise it assumes there is no TPM. It has been observed on BCM2835 that IMA is initialised before TPM, and that initialising the BCM2835 clock driver before the firmware driver has the effect of reversing this order. Change the firmware driver to initialise at core_initcall, delaying the BCM2835 clock driver to postcore_initcall. See: #3291 #3297 Signed-off-by: Luke Hinds <[email protected]> Co-authored-by: Phil Elwell <[email protected]>
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The IMA (Integrity Measurement Architecture) looks for a TPM (Trusted Platform Module) having been registered when it initialises; otherwise it assumes there is no TPM. It has been observed on BCM2835 that IMA is initialised before TPM, and that initialising the BCM2835 clock driver before the firmware driver has the effect of reversing this order. Change the firmware driver to initialise at core_initcall, delaying the BCM2835 clock driver to postcore_initcall. See: #3291 #3297 Signed-off-by: Luke Hinds <[email protected]> Co-authored-by: Phil Elwell <[email protected]>
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The IMA (Integrity Measurement Architecture) looks for a TPM (Trusted Platform Module) having been registered when it initialises; otherwise it assumes there is no TPM. It has been observed on BCM2835 that IMA is initialised before TPM, and that initialising the BCM2835 clock driver before the firmware driver has the effect of reversing this order. Change the firmware driver to initialise at core_initcall, delaying the BCM2835 clock driver to postcore_initcall. See: #3291 #3297 Signed-off-by: Luke Hinds <[email protected]> Co-authored-by: Phil Elwell <[email protected]>
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so that special/critical clocks can get enabled early on in the boot process avoiding the risk of disabling a clock, pll_divider or pll when a claiming driver fails to install propperly - maybe it needs to defer. Signed-off-by: Martin Sperl <[email protected]> clk: clk-bcm2835: Use %zd when printing size_t The debug text for how many clocks have been registered uses "%d" with a size_t. Correct it to "%zd". Signed-off-by: Dave Stevenson <[email protected]> Initialise rpi-firmware before clk-bcm2835 The IMA (Integrity Measurement Architecture) looks for a TPM (Trusted Platform Module) having been registered when it initialises; otherwise it assumes there is no TPM. It has been observed on BCM2835 that IMA is initialised before TPM, and that initialising the BCM2835 clock driver before the firmware driver has the effect of reversing this order. Change the firmware driver to initialise at core_initcall, delaying the BCM2835 clock driver to postcore_initcall. See: #3291 #3297 Signed-off-by: Luke Hinds <[email protected]> Co-authored-by: Phil Elwell <[email protected]> clk-bcm2835: use subsys_initcall for the clock driver when IMA is enabled Co-authored-by: Davide Scovotto <[email protected]> Co-developed-by: Davide Scovotto <[email protected]> Signed-off-by: Davide Scovotto <[email protected]> Signed-off-by: Alberto Solavagione <[email protected]>
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so that special/critical clocks can get enabled early on in the boot process avoiding the risk of disabling a clock, pll_divider or pll when a claiming driver fails to install propperly - maybe it needs to defer. Signed-off-by: Martin Sperl <[email protected]> clk: clk-bcm2835: Use %zd when printing size_t The debug text for how many clocks have been registered uses "%d" with a size_t. Correct it to "%zd". Signed-off-by: Dave Stevenson <[email protected]> Initialise rpi-firmware before clk-bcm2835 The IMA (Integrity Measurement Architecture) looks for a TPM (Trusted Platform Module) having been registered when it initialises; otherwise it assumes there is no TPM. It has been observed on BCM2835 that IMA is initialised before TPM, and that initialising the BCM2835 clock driver before the firmware driver has the effect of reversing this order. Change the firmware driver to initialise at core_initcall, delaying the BCM2835 clock driver to postcore_initcall. See: #3291 #3297 Signed-off-by: Luke Hinds <[email protected]> Co-authored-by: Phil Elwell <[email protected]> clk-bcm2835: use subsys_initcall for the clock driver when IMA is enabled Co-authored-by: Davide Scovotto <[email protected]> Co-developed-by: Davide Scovotto <[email protected]> Signed-off-by: Davide Scovotto <[email protected]> Signed-off-by: Alberto Solavagione <[email protected]>
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so that special/critical clocks can get enabled early on in the boot process avoiding the risk of disabling a clock, pll_divider or pll when a claiming driver fails to install propperly - maybe it needs to defer. Signed-off-by: Martin Sperl <[email protected]> clk: clk-bcm2835: Use %zd when printing size_t The debug text for how many clocks have been registered uses "%d" with a size_t. Correct it to "%zd". Signed-off-by: Dave Stevenson <[email protected]> Initialise rpi-firmware before clk-bcm2835 The IMA (Integrity Measurement Architecture) looks for a TPM (Trusted Platform Module) having been registered when it initialises; otherwise it assumes there is no TPM. It has been observed on BCM2835 that IMA is initialised before TPM, and that initialising the BCM2835 clock driver before the firmware driver has the effect of reversing this order. Change the firmware driver to initialise at core_initcall, delaying the BCM2835 clock driver to postcore_initcall. See: #3291 #3297 Signed-off-by: Luke Hinds <[email protected]> Co-authored-by: Phil Elwell <[email protected]> clk-bcm2835: use subsys_initcall for the clock driver when IMA is enabled Co-authored-by: Davide Scovotto <[email protected]> Co-developed-by: Davide Scovotto <[email protected]> Signed-off-by: Davide Scovotto <[email protected]> Signed-off-by: Alberto Solavagione <[email protected]>
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so that special/critical clocks can get enabled early on in the boot process avoiding the risk of disabling a clock, pll_divider or pll when a claiming driver fails to install propperly - maybe it needs to defer. Signed-off-by: Martin Sperl <[email protected]> clk: clk-bcm2835: Use %zd when printing size_t The debug text for how many clocks have been registered uses "%d" with a size_t. Correct it to "%zd". Signed-off-by: Dave Stevenson <[email protected]> Initialise rpi-firmware before clk-bcm2835 The IMA (Integrity Measurement Architecture) looks for a TPM (Trusted Platform Module) having been registered when it initialises; otherwise it assumes there is no TPM. It has been observed on BCM2835 that IMA is initialised before TPM, and that initialising the BCM2835 clock driver before the firmware driver has the effect of reversing this order. Change the firmware driver to initialise at core_initcall, delaying the BCM2835 clock driver to postcore_initcall. See: #3291 #3297 Signed-off-by: Luke Hinds <[email protected]> Co-authored-by: Phil Elwell <[email protected]> clk-bcm2835: use subsys_initcall for the clock driver when IMA is enabled Co-authored-by: Davide Scovotto <[email protected]> Co-developed-by: Davide Scovotto <[email protected]> Signed-off-by: Davide Scovotto <[email protected]> Signed-off-by: Alberto Solavagione <[email protected]>
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so that special/critical clocks can get enabled early on in the boot process avoiding the risk of disabling a clock, pll_divider or pll when a claiming driver fails to install propperly - maybe it needs to defer. Signed-off-by: Martin Sperl <[email protected]> clk: clk-bcm2835: Use %zd when printing size_t The debug text for how many clocks have been registered uses "%d" with a size_t. Correct it to "%zd". Signed-off-by: Dave Stevenson <[email protected]> Initialise rpi-firmware before clk-bcm2835 The IMA (Integrity Measurement Architecture) looks for a TPM (Trusted Platform Module) having been registered when it initialises; otherwise it assumes there is no TPM. It has been observed on BCM2835 that IMA is initialised before TPM, and that initialising the BCM2835 clock driver before the firmware driver has the effect of reversing this order. Change the firmware driver to initialise at core_initcall, delaying the BCM2835 clock driver to postcore_initcall. See: #3291 #3297 Signed-off-by: Luke Hinds <[email protected]> Co-authored-by: Phil Elwell <[email protected]> clk-bcm2835: use subsys_initcall for the clock driver when IMA is enabled Co-authored-by: Davide Scovotto <[email protected]> Co-developed-by: Davide Scovotto <[email protected]> Signed-off-by: Davide Scovotto <[email protected]> Signed-off-by: Alberto Solavagione <[email protected]>
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so that special/critical clocks can get enabled early on in the boot process avoiding the risk of disabling a clock, pll_divider or pll when a claiming driver fails to install propperly - maybe it needs to defer. Signed-off-by: Martin Sperl <[email protected]> clk: clk-bcm2835: Use %zd when printing size_t The debug text for how many clocks have been registered uses "%d" with a size_t. Correct it to "%zd". Signed-off-by: Dave Stevenson <[email protected]> Initialise rpi-firmware before clk-bcm2835 The IMA (Integrity Measurement Architecture) looks for a TPM (Trusted Platform Module) having been registered when it initialises; otherwise it assumes there is no TPM. It has been observed on BCM2835 that IMA is initialised before TPM, and that initialising the BCM2835 clock driver before the firmware driver has the effect of reversing this order. Change the firmware driver to initialise at core_initcall, delaying the BCM2835 clock driver to postcore_initcall. See: #3291 #3297 Signed-off-by: Luke Hinds <[email protected]> Co-authored-by: Phil Elwell <[email protected]> clk-bcm2835: use subsys_initcall for the clock driver when IMA is enabled Co-authored-by: Davide Scovotto <[email protected]> Co-developed-by: Davide Scovotto <[email protected]> Signed-off-by: Davide Scovotto <[email protected]> Signed-off-by: Alberto Solavagione <[email protected]>
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so that special/critical clocks can get enabled early on in the boot process avoiding the risk of disabling a clock, pll_divider or pll when a claiming driver fails to install propperly - maybe it needs to defer. Signed-off-by: Martin Sperl <[email protected]> clk: clk-bcm2835: Use %zd when printing size_t The debug text for how many clocks have been registered uses "%d" with a size_t. Correct it to "%zd". Signed-off-by: Dave Stevenson <[email protected]> Initialise rpi-firmware before clk-bcm2835 The IMA (Integrity Measurement Architecture) looks for a TPM (Trusted Platform Module) having been registered when it initialises; otherwise it assumes there is no TPM. It has been observed on BCM2835 that IMA is initialised before TPM, and that initialising the BCM2835 clock driver before the firmware driver has the effect of reversing this order. Change the firmware driver to initialise at core_initcall, delaying the BCM2835 clock driver to postcore_initcall. See: #3291 #3297 Signed-off-by: Luke Hinds <[email protected]> Co-authored-by: Phil Elwell <[email protected]> clk-bcm2835: use subsys_initcall for the clock driver when IMA is enabled Co-authored-by: Davide Scovotto <[email protected]> Co-developed-by: Davide Scovotto <[email protected]> Signed-off-by: Davide Scovotto <[email protected]> Signed-off-by: Alberto Solavagione <[email protected]>
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so that special/critical clocks can get enabled early on in the boot process avoiding the risk of disabling a clock, pll_divider or pll when a claiming driver fails to install propperly - maybe it needs to defer. Signed-off-by: Martin Sperl <[email protected]> clk: clk-bcm2835: Use %zd when printing size_t The debug text for how many clocks have been registered uses "%d" with a size_t. Correct it to "%zd". Signed-off-by: Dave Stevenson <[email protected]> Initialise rpi-firmware before clk-bcm2835 The IMA (Integrity Measurement Architecture) looks for a TPM (Trusted Platform Module) having been registered when it initialises; otherwise it assumes there is no TPM. It has been observed on BCM2835 that IMA is initialised before TPM, and that initialising the BCM2835 clock driver before the firmware driver has the effect of reversing this order. Change the firmware driver to initialise at core_initcall, delaying the BCM2835 clock driver to postcore_initcall. See: #3291 #3297 Signed-off-by: Luke Hinds <[email protected]> Co-authored-by: Phil Elwell <[email protected]> clk-bcm2835: use subsys_initcall for the clock driver when IMA is enabled Co-authored-by: Davide Scovotto <[email protected]> Co-developed-by: Davide Scovotto <[email protected]> Signed-off-by: Davide Scovotto <[email protected]> Signed-off-by: Alberto Solavagione <[email protected]>
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so that special/critical clocks can get enabled early on in the boot process avoiding the risk of disabling a clock, pll_divider or pll when a claiming driver fails to install propperly - maybe it needs to defer. Signed-off-by: Martin Sperl <[email protected]> clk: clk-bcm2835: Use %zd when printing size_t The debug text for how many clocks have been registered uses "%d" with a size_t. Correct it to "%zd". Signed-off-by: Dave Stevenson <[email protected]> Initialise rpi-firmware before clk-bcm2835 The IMA (Integrity Measurement Architecture) looks for a TPM (Trusted Platform Module) having been registered when it initialises; otherwise it assumes there is no TPM. It has been observed on BCM2835 that IMA is initialised before TPM, and that initialising the BCM2835 clock driver before the firmware driver has the effect of reversing this order. Change the firmware driver to initialise at core_initcall, delaying the BCM2835 clock driver to postcore_initcall. See: #3291 #3297 Signed-off-by: Luke Hinds <[email protected]> Co-authored-by: Phil Elwell <[email protected]> clk-bcm2835: use subsys_initcall for the clock driver when IMA is enabled Co-authored-by: Davide Scovotto <[email protected]> Co-developed-by: Davide Scovotto <[email protected]> Signed-off-by: Davide Scovotto <[email protected]> Signed-off-by: Alberto Solavagione <[email protected]>
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so that special/critical clocks can get enabled early on in the boot process avoiding the risk of disabling a clock, pll_divider or pll when a claiming driver fails to install propperly - maybe it needs to defer. Signed-off-by: Martin Sperl <[email protected]> clk: clk-bcm2835: Use %zd when printing size_t The debug text for how many clocks have been registered uses "%d" with a size_t. Correct it to "%zd". Signed-off-by: Dave Stevenson <[email protected]> Initialise rpi-firmware before clk-bcm2835 The IMA (Integrity Measurement Architecture) looks for a TPM (Trusted Platform Module) having been registered when it initialises; otherwise it assumes there is no TPM. It has been observed on BCM2835 that IMA is initialised before TPM, and that initialising the BCM2835 clock driver before the firmware driver has the effect of reversing this order. Change the firmware driver to initialise at core_initcall, delaying the BCM2835 clock driver to postcore_initcall. See: #3291 #3297 Signed-off-by: Luke Hinds <[email protected]> Co-authored-by: Phil Elwell <[email protected]> clk-bcm2835: use subsys_initcall for the clock driver when IMA is enabled Co-authored-by: Davide Scovotto <[email protected]> Co-developed-by: Davide Scovotto <[email protected]> Signed-off-by: Davide Scovotto <[email protected]> Signed-off-by: Alberto Solavagione <[email protected]>
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so that special/critical clocks can get enabled early on in the boot process avoiding the risk of disabling a clock, pll_divider or pll when a claiming driver fails to install propperly - maybe it needs to defer. Signed-off-by: Martin Sperl <[email protected]> clk: clk-bcm2835: Use %zd when printing size_t The debug text for how many clocks have been registered uses "%d" with a size_t. Correct it to "%zd". Signed-off-by: Dave Stevenson <[email protected]> Initialise rpi-firmware before clk-bcm2835 The IMA (Integrity Measurement Architecture) looks for a TPM (Trusted Platform Module) having been registered when it initialises; otherwise it assumes there is no TPM. It has been observed on BCM2835 that IMA is initialised before TPM, and that initialising the BCM2835 clock driver before the firmware driver has the effect of reversing this order. Change the firmware driver to initialise at core_initcall, delaying the BCM2835 clock driver to postcore_initcall. See: #3291 #3297 Signed-off-by: Luke Hinds <[email protected]> Co-authored-by: Phil Elwell <[email protected]> clk-bcm2835: use subsys_initcall for the clock driver when IMA is enabled Co-authored-by: Davide Scovotto <[email protected]> Co-developed-by: Davide Scovotto <[email protected]> Signed-off-by: Davide Scovotto <[email protected]> Signed-off-by: Alberto Solavagione <[email protected]>
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so that special/critical clocks can get enabled early on in the boot process avoiding the risk of disabling a clock, pll_divider or pll when a claiming driver fails to install propperly - maybe it needs to defer. Signed-off-by: Martin Sperl <[email protected]> clk: clk-bcm2835: Use %zd when printing size_t The debug text for how many clocks have been registered uses "%d" with a size_t. Correct it to "%zd". Signed-off-by: Dave Stevenson <[email protected]> Initialise rpi-firmware before clk-bcm2835 The IMA (Integrity Measurement Architecture) looks for a TPM (Trusted Platform Module) having been registered when it initialises; otherwise it assumes there is no TPM. It has been observed on BCM2835 that IMA is initialised before TPM, and that initialising the BCM2835 clock driver before the firmware driver has the effect of reversing this order. Change the firmware driver to initialise at core_initcall, delaying the BCM2835 clock driver to postcore_initcall. See: #3291 #3297 Signed-off-by: Luke Hinds <[email protected]> Co-authored-by: Phil Elwell <[email protected]> clk-bcm2835: use subsys_initcall for the clock driver when IMA is enabled Co-authored-by: Davide Scovotto <[email protected]> Co-developed-by: Davide Scovotto <[email protected]> Signed-off-by: Davide Scovotto <[email protected]> Signed-off-by: Alberto Solavagione <[email protected]>
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Sep 22, 2025
so that special/critical clocks can get enabled early on in the boot process avoiding the risk of disabling a clock, pll_divider or pll when a claiming driver fails to install propperly - maybe it needs to defer. Signed-off-by: Martin Sperl <[email protected]> clk: clk-bcm2835: Use %zd when printing size_t The debug text for how many clocks have been registered uses "%d" with a size_t. Correct it to "%zd". Signed-off-by: Dave Stevenson <[email protected]> Initialise rpi-firmware before clk-bcm2835 The IMA (Integrity Measurement Architecture) looks for a TPM (Trusted Platform Module) having been registered when it initialises; otherwise it assumes there is no TPM. It has been observed on BCM2835 that IMA is initialised before TPM, and that initialising the BCM2835 clock driver before the firmware driver has the effect of reversing this order. Change the firmware driver to initialise at core_initcall, delaying the BCM2835 clock driver to postcore_initcall. See: #3291 #3297 Signed-off-by: Luke Hinds <[email protected]> Co-authored-by: Phil Elwell <[email protected]> clk-bcm2835: use subsys_initcall for the clock driver when IMA is enabled Co-authored-by: Davide Scovotto <[email protected]> Co-developed-by: Davide Scovotto <[email protected]> Signed-off-by: Davide Scovotto <[email protected]> Signed-off-by: Alberto Solavagione <[email protected]>
popcornmix
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Sep 22, 2025
so that special/critical clocks can get enabled early on in the boot process avoiding the risk of disabling a clock, pll_divider or pll when a claiming driver fails to install propperly - maybe it needs to defer. Signed-off-by: Martin Sperl <[email protected]> clk: clk-bcm2835: Use %zd when printing size_t The debug text for how many clocks have been registered uses "%d" with a size_t. Correct it to "%zd". Signed-off-by: Dave Stevenson <[email protected]> Initialise rpi-firmware before clk-bcm2835 The IMA (Integrity Measurement Architecture) looks for a TPM (Trusted Platform Module) having been registered when it initialises; otherwise it assumes there is no TPM. It has been observed on BCM2835 that IMA is initialised before TPM, and that initialising the BCM2835 clock driver before the firmware driver has the effect of reversing this order. Change the firmware driver to initialise at core_initcall, delaying the BCM2835 clock driver to postcore_initcall. See: #3291 #3297 Signed-off-by: Luke Hinds <[email protected]> Co-authored-by: Phil Elwell <[email protected]> clk-bcm2835: use subsys_initcall for the clock driver when IMA is enabled Co-authored-by: Davide Scovotto <[email protected]> Co-developed-by: Davide Scovotto <[email protected]> Signed-off-by: Davide Scovotto <[email protected]> Signed-off-by: Alberto Solavagione <[email protected]>
popcornmix
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Sep 25, 2025
so that special/critical clocks can get enabled early on in the boot process avoiding the risk of disabling a clock, pll_divider or pll when a claiming driver fails to install propperly - maybe it needs to defer. Signed-off-by: Martin Sperl <[email protected]> clk: clk-bcm2835: Use %zd when printing size_t The debug text for how many clocks have been registered uses "%d" with a size_t. Correct it to "%zd". Signed-off-by: Dave Stevenson <[email protected]> Initialise rpi-firmware before clk-bcm2835 The IMA (Integrity Measurement Architecture) looks for a TPM (Trusted Platform Module) having been registered when it initialises; otherwise it assumes there is no TPM. It has been observed on BCM2835 that IMA is initialised before TPM, and that initialising the BCM2835 clock driver before the firmware driver has the effect of reversing this order. Change the firmware driver to initialise at core_initcall, delaying the BCM2835 clock driver to postcore_initcall. See: #3291 #3297 Signed-off-by: Luke Hinds <[email protected]> Co-authored-by: Phil Elwell <[email protected]> clk-bcm2835: use subsys_initcall for the clock driver when IMA is enabled Co-authored-by: Davide Scovotto <[email protected]> Co-developed-by: Davide Scovotto <[email protected]> Signed-off-by: Davide Scovotto <[email protected]> Signed-off-by: Alberto Solavagione <[email protected]>
popcornmix
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Sep 29, 2025
so that special/critical clocks can get enabled early on in the boot process avoiding the risk of disabling a clock, pll_divider or pll when a claiming driver fails to install propperly - maybe it needs to defer. Signed-off-by: Martin Sperl <[email protected]> clk: clk-bcm2835: Use %zd when printing size_t The debug text for how many clocks have been registered uses "%d" with a size_t. Correct it to "%zd". Signed-off-by: Dave Stevenson <[email protected]> Initialise rpi-firmware before clk-bcm2835 The IMA (Integrity Measurement Architecture) looks for a TPM (Trusted Platform Module) having been registered when it initialises; otherwise it assumes there is no TPM. It has been observed on BCM2835 that IMA is initialised before TPM, and that initialising the BCM2835 clock driver before the firmware driver has the effect of reversing this order. Change the firmware driver to initialise at core_initcall, delaying the BCM2835 clock driver to postcore_initcall. See: #3291 #3297 Signed-off-by: Luke Hinds <[email protected]> Co-authored-by: Phil Elwell <[email protected]> clk-bcm2835: use subsys_initcall for the clock driver when IMA is enabled Co-authored-by: Davide Scovotto <[email protected]> Co-developed-by: Davide Scovotto <[email protected]> Signed-off-by: Davide Scovotto <[email protected]> Signed-off-by: Alberto Solavagione <[email protected]>
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Oct 3, 2025
so that special/critical clocks can get enabled early on in the boot process avoiding the risk of disabling a clock, pll_divider or pll when a claiming driver fails to install propperly - maybe it needs to defer. Signed-off-by: Martin Sperl <[email protected]> clk: clk-bcm2835: Use %zd when printing size_t The debug text for how many clocks have been registered uses "%d" with a size_t. Correct it to "%zd". Signed-off-by: Dave Stevenson <[email protected]> Initialise rpi-firmware before clk-bcm2835 The IMA (Integrity Measurement Architecture) looks for a TPM (Trusted Platform Module) having been registered when it initialises; otherwise it assumes there is no TPM. It has been observed on BCM2835 that IMA is initialised before TPM, and that initialising the BCM2835 clock driver before the firmware driver has the effect of reversing this order. Change the firmware driver to initialise at core_initcall, delaying the BCM2835 clock driver to postcore_initcall. See: #3291 #3297 Signed-off-by: Luke Hinds <[email protected]> Co-authored-by: Phil Elwell <[email protected]> clk-bcm2835: use subsys_initcall for the clock driver when IMA is enabled Co-authored-by: Davide Scovotto <[email protected]> Co-developed-by: Davide Scovotto <[email protected]> Signed-off-by: Davide Scovotto <[email protected]> Signed-off-by: Alberto Solavagione <[email protected]>
popcornmix
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Oct 6, 2025
so that special/critical clocks can get enabled early on in the boot process avoiding the risk of disabling a clock, pll_divider or pll when a claiming driver fails to install propperly - maybe it needs to defer. Signed-off-by: Martin Sperl <[email protected]> clk: clk-bcm2835: Use %zd when printing size_t The debug text for how many clocks have been registered uses "%d" with a size_t. Correct it to "%zd". Signed-off-by: Dave Stevenson <[email protected]> Initialise rpi-firmware before clk-bcm2835 The IMA (Integrity Measurement Architecture) looks for a TPM (Trusted Platform Module) having been registered when it initialises; otherwise it assumes there is no TPM. It has been observed on BCM2835 that IMA is initialised before TPM, and that initialising the BCM2835 clock driver before the firmware driver has the effect of reversing this order. Change the firmware driver to initialise at core_initcall, delaying the BCM2835 clock driver to postcore_initcall. See: #3291 #3297 Signed-off-by: Luke Hinds <[email protected]> Co-authored-by: Phil Elwell <[email protected]> clk-bcm2835: use subsys_initcall for the clock driver when IMA is enabled Co-authored-by: Davide Scovotto <[email protected]> Co-developed-by: Davide Scovotto <[email protected]> Signed-off-by: Davide Scovotto <[email protected]> Signed-off-by: Alberto Solavagione <[email protected]>
popcornmix
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Oct 6, 2025
so that special/critical clocks can get enabled early on in the boot process avoiding the risk of disabling a clock, pll_divider or pll when a claiming driver fails to install propperly - maybe it needs to defer. Signed-off-by: Martin Sperl <[email protected]> clk: clk-bcm2835: Use %zd when printing size_t The debug text for how many clocks have been registered uses "%d" with a size_t. Correct it to "%zd". Signed-off-by: Dave Stevenson <[email protected]> Initialise rpi-firmware before clk-bcm2835 The IMA (Integrity Measurement Architecture) looks for a TPM (Trusted Platform Module) having been registered when it initialises; otherwise it assumes there is no TPM. It has been observed on BCM2835 that IMA is initialised before TPM, and that initialising the BCM2835 clock driver before the firmware driver has the effect of reversing this order. Change the firmware driver to initialise at core_initcall, delaying the BCM2835 clock driver to postcore_initcall. See: #3291 #3297 Signed-off-by: Luke Hinds <[email protected]> Co-authored-by: Phil Elwell <[email protected]> clk-bcm2835: use subsys_initcall for the clock driver when IMA is enabled Co-authored-by: Davide Scovotto <[email protected]> Co-developed-by: Davide Scovotto <[email protected]> Signed-off-by: Davide Scovotto <[email protected]> Signed-off-by: Alberto Solavagione <[email protected]>
popcornmix
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Oct 14, 2025
so that special/critical clocks can get enabled early on in the boot process avoiding the risk of disabling a clock, pll_divider or pll when a claiming driver fails to install propperly - maybe it needs to defer. Signed-off-by: Martin Sperl <[email protected]> clk: clk-bcm2835: Use %zd when printing size_t The debug text for how many clocks have been registered uses "%d" with a size_t. Correct it to "%zd". Signed-off-by: Dave Stevenson <[email protected]> Initialise rpi-firmware before clk-bcm2835 The IMA (Integrity Measurement Architecture) looks for a TPM (Trusted Platform Module) having been registered when it initialises; otherwise it assumes there is no TPM. It has been observed on BCM2835 that IMA is initialised before TPM, and that initialising the BCM2835 clock driver before the firmware driver has the effect of reversing this order. Change the firmware driver to initialise at core_initcall, delaying the BCM2835 clock driver to postcore_initcall. See: #3291 #3297 Signed-off-by: Luke Hinds <[email protected]> Co-authored-by: Phil Elwell <[email protected]> clk-bcm2835: use subsys_initcall for the clock driver when IMA is enabled Co-authored-by: Davide Scovotto <[email protected]> Co-developed-by: Davide Scovotto <[email protected]> Signed-off-by: Davide Scovotto <[email protected]> Signed-off-by: Alberto Solavagione <[email protected]>
popcornmix
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Oct 14, 2025
so that special/critical clocks can get enabled early on in the boot process avoiding the risk of disabling a clock, pll_divider or pll when a claiming driver fails to install propperly - maybe it needs to defer. Signed-off-by: Martin Sperl <[email protected]> clk: clk-bcm2835: Use %zd when printing size_t The debug text for how many clocks have been registered uses "%d" with a size_t. Correct it to "%zd". Signed-off-by: Dave Stevenson <[email protected]> Initialise rpi-firmware before clk-bcm2835 The IMA (Integrity Measurement Architecture) looks for a TPM (Trusted Platform Module) having been registered when it initialises; otherwise it assumes there is no TPM. It has been observed on BCM2835 that IMA is initialised before TPM, and that initialising the BCM2835 clock driver before the firmware driver has the effect of reversing this order. Change the firmware driver to initialise at core_initcall, delaying the BCM2835 clock driver to postcore_initcall. See: #3291 #3297 Signed-off-by: Luke Hinds <[email protected]> Co-authored-by: Phil Elwell <[email protected]> clk-bcm2835: use subsys_initcall for the clock driver when IMA is enabled Co-authored-by: Davide Scovotto <[email protected]> Co-developed-by: Davide Scovotto <[email protected]> Signed-off-by: Davide Scovotto <[email protected]> Signed-off-by: Alberto Solavagione <[email protected]>
popcornmix
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Oct 15, 2025
so that special/critical clocks can get enabled early on in the boot process avoiding the risk of disabling a clock, pll_divider or pll when a claiming driver fails to install propperly - maybe it needs to defer. Signed-off-by: Martin Sperl <[email protected]> clk: clk-bcm2835: Use %zd when printing size_t The debug text for how many clocks have been registered uses "%d" with a size_t. Correct it to "%zd". Signed-off-by: Dave Stevenson <[email protected]> Initialise rpi-firmware before clk-bcm2835 The IMA (Integrity Measurement Architecture) looks for a TPM (Trusted Platform Module) having been registered when it initialises; otherwise it assumes there is no TPM. It has been observed on BCM2835 that IMA is initialised before TPM, and that initialising the BCM2835 clock driver before the firmware driver has the effect of reversing this order. Change the firmware driver to initialise at core_initcall, delaying the BCM2835 clock driver to postcore_initcall. See: #3291 #3297 Signed-off-by: Luke Hinds <[email protected]> Co-authored-by: Phil Elwell <[email protected]> clk-bcm2835: use subsys_initcall for the clock driver when IMA is enabled Co-authored-by: Davide Scovotto <[email protected]> Co-developed-by: Davide Scovotto <[email protected]> Signed-off-by: Davide Scovotto <[email protected]> Signed-off-by: Alberto Solavagione <[email protected]>
popcornmix
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Oct 20, 2025
so that special/critical clocks can get enabled early on in the boot process avoiding the risk of disabling a clock, pll_divider or pll when a claiming driver fails to install propperly - maybe it needs to defer. Signed-off-by: Martin Sperl <[email protected]> clk: clk-bcm2835: Use %zd when printing size_t The debug text for how many clocks have been registered uses "%d" with a size_t. Correct it to "%zd". Signed-off-by: Dave Stevenson <[email protected]> Initialise rpi-firmware before clk-bcm2835 The IMA (Integrity Measurement Architecture) looks for a TPM (Trusted Platform Module) having been registered when it initialises; otherwise it assumes there is no TPM. It has been observed on BCM2835 that IMA is initialised before TPM, and that initialising the BCM2835 clock driver before the firmware driver has the effect of reversing this order. Change the firmware driver to initialise at core_initcall, delaying the BCM2835 clock driver to postcore_initcall. See: #3291 #3297 Signed-off-by: Luke Hinds <[email protected]> Co-authored-by: Phil Elwell <[email protected]> clk-bcm2835: use subsys_initcall for the clock driver when IMA is enabled Co-authored-by: Davide Scovotto <[email protected]> Co-developed-by: Davide Scovotto <[email protected]> Signed-off-by: Davide Scovotto <[email protected]> Signed-off-by: Alberto Solavagione <[email protected]>
popcornmix
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Oct 20, 2025
so that special/critical clocks can get enabled early on in the boot process avoiding the risk of disabling a clock, pll_divider or pll when a claiming driver fails to install propperly - maybe it needs to defer. Signed-off-by: Martin Sperl <[email protected]> clk: clk-bcm2835: Use %zd when printing size_t The debug text for how many clocks have been registered uses "%d" with a size_t. Correct it to "%zd". Signed-off-by: Dave Stevenson <[email protected]> Initialise rpi-firmware before clk-bcm2835 The IMA (Integrity Measurement Architecture) looks for a TPM (Trusted Platform Module) having been registered when it initialises; otherwise it assumes there is no TPM. It has been observed on BCM2835 that IMA is initialised before TPM, and that initialising the BCM2835 clock driver before the firmware driver has the effect of reversing this order. Change the firmware driver to initialise at core_initcall, delaying the BCM2835 clock driver to postcore_initcall. See: #3291 #3297 Signed-off-by: Luke Hinds <[email protected]> Co-authored-by: Phil Elwell <[email protected]> clk-bcm2835: use subsys_initcall for the clock driver when IMA is enabled Co-authored-by: Davide Scovotto <[email protected]> Co-developed-by: Davide Scovotto <[email protected]> Signed-off-by: Davide Scovotto <[email protected]> Signed-off-by: Alberto Solavagione <[email protected]>
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Oct 24, 2025
so that special/critical clocks can get enabled early on in the boot process avoiding the risk of disabling a clock, pll_divider or pll when a claiming driver fails to install propperly - maybe it needs to defer. Signed-off-by: Martin Sperl <[email protected]> clk: clk-bcm2835: Use %zd when printing size_t The debug text for how many clocks have been registered uses "%d" with a size_t. Correct it to "%zd". Signed-off-by: Dave Stevenson <[email protected]> Initialise rpi-firmware before clk-bcm2835 The IMA (Integrity Measurement Architecture) looks for a TPM (Trusted Platform Module) having been registered when it initialises; otherwise it assumes there is no TPM. It has been observed on BCM2835 that IMA is initialised before TPM, and that initialising the BCM2835 clock driver before the firmware driver has the effect of reversing this order. Change the firmware driver to initialise at core_initcall, delaying the BCM2835 clock driver to postcore_initcall. See: #3291 #3297 Signed-off-by: Luke Hinds <[email protected]> Co-authored-by: Phil Elwell <[email protected]> clk-bcm2835: use subsys_initcall for the clock driver when IMA is enabled Co-authored-by: Davide Scovotto <[email protected]> Co-developed-by: Davide Scovotto <[email protected]> Signed-off-by: Davide Scovotto <[email protected]> Signed-off-by: Alberto Solavagione <[email protected]>
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Oct 27, 2025
so that special/critical clocks can get enabled early on in the boot process avoiding the risk of disabling a clock, pll_divider or pll when a claiming driver fails to install propperly - maybe it needs to defer. Signed-off-by: Martin Sperl <[email protected]> clk: clk-bcm2835: Use %zd when printing size_t The debug text for how many clocks have been registered uses "%d" with a size_t. Correct it to "%zd". Signed-off-by: Dave Stevenson <[email protected]> Initialise rpi-firmware before clk-bcm2835 The IMA (Integrity Measurement Architecture) looks for a TPM (Trusted Platform Module) having been registered when it initialises; otherwise it assumes there is no TPM. It has been observed on BCM2835 that IMA is initialised before TPM, and that initialising the BCM2835 clock driver before the firmware driver has the effect of reversing this order. Change the firmware driver to initialise at core_initcall, delaying the BCM2835 clock driver to postcore_initcall. See: #3291 #3297 Signed-off-by: Luke Hinds <[email protected]> Co-authored-by: Phil Elwell <[email protected]> clk-bcm2835: use subsys_initcall for the clock driver when IMA is enabled Co-authored-by: Davide Scovotto <[email protected]> Co-developed-by: Davide Scovotto <[email protected]> Signed-off-by: Davide Scovotto <[email protected]> Signed-off-by: Alberto Solavagione <[email protected]>
popcornmix
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Oct 27, 2025
so that special/critical clocks can get enabled early on in the boot process avoiding the risk of disabling a clock, pll_divider or pll when a claiming driver fails to install propperly - maybe it needs to defer. Signed-off-by: Martin Sperl <[email protected]> clk: clk-bcm2835: Use %zd when printing size_t The debug text for how many clocks have been registered uses "%d" with a size_t. Correct it to "%zd". Signed-off-by: Dave Stevenson <[email protected]> Initialise rpi-firmware before clk-bcm2835 The IMA (Integrity Measurement Architecture) looks for a TPM (Trusted Platform Module) having been registered when it initialises; otherwise it assumes there is no TPM. It has been observed on BCM2835 that IMA is initialised before TPM, and that initialising the BCM2835 clock driver before the firmware driver has the effect of reversing this order. Change the firmware driver to initialise at core_initcall, delaying the BCM2835 clock driver to postcore_initcall. See: #3291 #3297 Signed-off-by: Luke Hinds <[email protected]> Co-authored-by: Phil Elwell <[email protected]> clk-bcm2835: use subsys_initcall for the clock driver when IMA is enabled Co-authored-by: Davide Scovotto <[email protected]> Co-developed-by: Davide Scovotto <[email protected]> Signed-off-by: Davide Scovotto <[email protected]> Signed-off-by: Alberto Solavagione <[email protected]>
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so that special/critical clocks can get enabled early on in the boot process avoiding the risk of disabling a clock, pll_divider or pll when a claiming driver fails to install propperly - maybe it needs to defer. Signed-off-by: Martin Sperl <[email protected]> clk: clk-bcm2835: Use %zd when printing size_t The debug text for how many clocks have been registered uses "%d" with a size_t. Correct it to "%zd". Signed-off-by: Dave Stevenson <[email protected]> Initialise rpi-firmware before clk-bcm2835 The IMA (Integrity Measurement Architecture) looks for a TPM (Trusted Platform Module) having been registered when it initialises; otherwise it assumes there is no TPM. It has been observed on BCM2835 that IMA is initialised before TPM, and that initialising the BCM2835 clock driver before the firmware driver has the effect of reversing this order. Change the firmware driver to initialise at core_initcall, delaying the BCM2835 clock driver to postcore_initcall. See: #3291 #3297 Signed-off-by: Luke Hinds <[email protected]> Co-authored-by: Phil Elwell <[email protected]> clk-bcm2835: use subsys_initcall for the clock driver when IMA is enabled Co-authored-by: Davide Scovotto <[email protected]> Co-developed-by: Davide Scovotto <[email protected]> Signed-off-by: Davide Scovotto <[email protected]> Signed-off-by: Alberto Solavagione <[email protected]>
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so that special/critical clocks can get enabled early on in the boot process avoiding the risk of disabling a clock, pll_divider or pll when a claiming driver fails to install propperly - maybe it needs to defer. Signed-off-by: Martin Sperl <[email protected]> clk: clk-bcm2835: Use %zd when printing size_t The debug text for how many clocks have been registered uses "%d" with a size_t. Correct it to "%zd". Signed-off-by: Dave Stevenson <[email protected]> Initialise rpi-firmware before clk-bcm2835 The IMA (Integrity Measurement Architecture) looks for a TPM (Trusted Platform Module) having been registered when it initialises; otherwise it assumes there is no TPM. It has been observed on BCM2835 that IMA is initialised before TPM, and that initialising the BCM2835 clock driver before the firmware driver has the effect of reversing this order. Change the firmware driver to initialise at core_initcall, delaying the BCM2835 clock driver to postcore_initcall. See: #3291 #3297 Signed-off-by: Luke Hinds <[email protected]> Co-authored-by: Phil Elwell <[email protected]> clk-bcm2835: use subsys_initcall for the clock driver when IMA is enabled Co-authored-by: Davide Scovotto <[email protected]> Co-developed-by: Davide Scovotto <[email protected]> Signed-off-by: Davide Scovotto <[email protected]> Signed-off-by: Alberto Solavagione <[email protected]>
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so that special/critical clocks can get enabled early on in the boot process avoiding the risk of disabling a clock, pll_divider or pll when a claiming driver fails to install propperly - maybe it needs to defer. Signed-off-by: Martin Sperl <[email protected]> clk: clk-bcm2835: Use %zd when printing size_t The debug text for how many clocks have been registered uses "%d" with a size_t. Correct it to "%zd". Signed-off-by: Dave Stevenson <[email protected]> Initialise rpi-firmware before clk-bcm2835 The IMA (Integrity Measurement Architecture) looks for a TPM (Trusted Platform Module) having been registered when it initialises; otherwise it assumes there is no TPM. It has been observed on BCM2835 that IMA is initialised before TPM, and that initialising the BCM2835 clock driver before the firmware driver has the effect of reversing this order. Change the firmware driver to initialise at core_initcall, delaying the BCM2835 clock driver to postcore_initcall. See: #3291 #3297 Signed-off-by: Luke Hinds <[email protected]> Co-authored-by: Phil Elwell <[email protected]> clk-bcm2835: use subsys_initcall for the clock driver when IMA is enabled Co-authored-by: Davide Scovotto <[email protected]> Co-developed-by: Davide Scovotto <[email protected]> Signed-off-by: Davide Scovotto <[email protected]> Signed-off-by: Alberto Solavagione <[email protected]>
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This change seeks to correct the load order of a TPM and
IMA (Integrity Measurement Architecture).
Currently IMA loads first, which results in it not seeing the TPM
and using the TPM as a means to store measurements.
The order of
core_initcallandsubsys_initcallare reversedwithin
drivers/clk/bcm/clk-bcm2835.canddrivers/firmware/raspberrypi.cto achieve this.Resolves: #3291
Signed-off-by: Luke Hinds [email protected]