linux/drivers/firmware
Ard Biesheuvel 138728dd4e efi/arm-stub: Correct FDT and initrd allocation rules for arm64
On arm64, we have made some changes over the past year to the way the
kernel itself is allocated and to how it deals with the initrd and FDT.
This patch brings the allocation logic in the EFI stub in line with that,
which is necessary because the introduction of KASLR has created the
possibility for the initrd to be allocated in a place where the kernel
may not be able to map it. (This is mostly a theoretical scenario, since
it only affects systems where the physical memory footprint exceeds the
size of the linear mapping.)

Since we know the kernel itself will be covered by the linear mapping,
choose a suitably sized window (i.e., based on the size of the linear
region) covering the kernel when allocating memory for the initrd.

The FDT may be anywhere in memory on arm64 now that we map it via the
fixmap, so we can lift the address restriction there completely.

Tested-by: Richard Ruigrok <rruigrok@codeaurora.org>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Jeffrey Hugo <jhugo@codeaurora.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Matt Fleming <matt@codeblueprint.co.uk>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-efi@vger.kernel.org
Link: http://lkml.kernel.org/r/20170404160245.27812-4-ard.biesheuvel@linaro.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2017-04-05 12:27:23 +02:00
..
broadcom tree-wide: replace config_enabled() with IS_ENABLED() 2016-08-04 08:50:07 -04:00
efi efi/arm-stub: Correct FDT and initrd allocation rules for arm64 2017-04-05 12:27:23 +02:00
google firmware-gsmi: Delete an unnecessary check before the function call "dma_pool_destroy" 2016-09-09 16:08:45 +01:00
meson firmware: Amlogic: Add secure monitor driver 2016-09-01 14:23:39 -07:00
tegra sched/headers: Prepare for new header dependencies before moving code to <linux/sched/clock.h> 2017-03-02 08:42:27 +01:00
arm_scpi.c firmware: arm_scpi: fix reading sensor values on pre-1.0 SCPI firmwares 2016-12-30 14:53:36 +00:00
dcdbas.c dcdbas: Make use of smp_call_on_cpu() 2016-09-05 13:52:40 +02:00
dcdbas.h dcdbas: export functionality for use in other drivers 2009-01-08 08:31:12 -08:00
dell_rbu.c sysfs: add struct file* to bin_attr callbacks 2010-05-21 09:37:31 -07:00
dmi_scan.c firmware: dmi_scan: Always show system identification string 2016-12-19 10:01:47 +01:00
dmi-id.c dmi-id: don't free dev structure after calling device_register 2016-09-08 10:35:50 +02:00
dmi-sysfs.c firmware: dmi_scan: add SBMIOS entry and DMI tables 2015-06-25 09:06:56 +02:00
edd.c [SCSI] edd: Treat "XPRS" host bus type the same as "PCI" 2011-10-31 13:26:19 +04:00
iscsi_ibft_find.c efi: Make 'efi_enabled' a function to query EFI facilities 2013-01-30 11:51:59 -08:00
iscsi_ibft.c ibft: Expose iBFT acpi header via sysfs 2016-05-16 11:14:29 -04:00
Kconfig firmware: arm_scpi: Add hardware dependencies 2017-01-30 21:09:43 -08:00
Makefile Merge branch 'for-4.10-ti-sci-base' of https://github.com/t-kristo/linux-pm into next/drivers 2016-11-30 17:13:13 +01:00
memmap.c drivers/firmware/memmap.c: fix kernel-doc format 2015-06-25 17:00:41 -07:00
pcdp.c serial: 8250_early: Remove setup_early_serial8250_console() 2015-03-26 17:25:27 +01:00
pcdp.h Update broken web addresses in the kernel. 2010-10-18 11:03:14 +02:00
psci_checker.c sched/headers: Prepare for new header dependencies before moving code to <uapi/linux/sched/types.h> 2017-03-02 08:42:27 +01:00
psci.c drivers: firmware: psci: Use __pa_symbol for cpu_resume 2017-01-26 12:15:07 +00:00
qcom_scm-32.c firmware: qcom_scm: Add set remote state API 2017-01-16 23:45:04 -06:00
qcom_scm-64.c ARM: SoC driver updates 2017-02-23 15:57:04 -08:00
qcom_scm.c firmware: qcom_scm: Add set remote state API 2017-01-16 23:45:04 -06:00
qcom_scm.h firmware: qcom_scm: Add set remote state API 2017-01-16 23:45:04 -06:00
qemu_fw_cfg.c driver core update for 4.7-rc1 2016-05-20 21:26:15 -07:00
raspberrypi.c ARM: bcm2835: Add the Raspberry Pi firmware driver 2015-10-14 15:30:06 -07:00
scpi_pm_domain.c firmware: scpi: add device power domain support using genpd 2016-06-21 10:26:51 +01:00
ti_sci.c firmware: ti_sci: Add support for reboot core service 2016-10-27 12:09:12 +03:00
ti_sci.h firmware: ti_sci: Add support for reboot core service 2016-10-27 12:09:12 +03:00