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| author | Kyösti Mälkki <kyosti.malkki@gmail.com> | 2019-08-22 12:56:22 +0300 |
|---|---|---|
| committer | Kyösti Mälkki <kyosti.malkki@gmail.com> | 2019-09-11 06:28:27 +0000 |
| commit | 910490f3f48d418824276045489d1ceb221e0ba1 (patch) | |
| tree | 13b0a4dce7e0928acc9c0a5f0bb0e8c039b82001 /src/arch/x86/car.ld | |
| parent | 1095bfafed27a9e71b646ae8515c367480d0ed04 (diff) | |
arch/x86: Restrict use of _car_global[start|end]
Restrict the use of symbol names _car_global_[start|end]
to be used exclusively with CAR_GLOBAL_MIGRATION=y.
They just alias the start and end of .bss section in CAR.
Change-Id: I36c858a4f181516d4c61f9fd1d5005c7d2c06057
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/35034
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-by: Marshall Dawson <marshalldawson3rd@gmail.com>
Diffstat (limited to 'src/arch/x86/car.ld')
| -rw-r--r-- | src/arch/x86/car.ld | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/src/arch/x86/car.ld b/src/arch/x86/car.ld index a09150fcd9..6ccbd8c236 100644 --- a/src/arch/x86/car.ld +++ b/src/arch/x86/car.ld @@ -64,11 +64,13 @@ . += 80; _car_ehci_dbg_info_end = .; - /* _car_global_start and _car_global_end provide symbols to per-stage + /* _bss and _ebss provide symbols to per-stage * variables that are not shared like the timestamp and the pre-ram * cbmem console. This is useful for clearing this area on a per-stage * basis when more than one stage uses cache-as-ram for CAR_GLOBALs. */ - _car_global_start = .; + + . = ALIGN(ARCH_POINTER_ALIGN_SIZE); + _bss = .; #if ENV_STAGE_HAS_BSS_SECTION /* Allow global uninitialized variables for stages without CAR teardown. */ *(.bss) @@ -76,10 +78,12 @@ *(.sbss) *(.sbss.*) #else + _car_global_start = .; *(.car.global_data); + _car_global_end = .; #endif . = ALIGN(ARCH_POINTER_ALIGN_SIZE); - _car_global_end = .; + _ebss = .; _car_unallocated_start = .; #if !CONFIG(C_ENVIRONMENT_BOOTBLOCK) |