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arch/x86: Simplify <arch/early_variables.h>

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This enables the use of .bss section for ENV_BOOTBLOCK
and ENV_VERSTAGE even with CAR_GLOBAL_MIGRATION=y.

In practice, boards with CAR_GLOBAL_MIGRATION=y currently
build with romcc-bootblock so they will not be using .bss.

Change-Id: Ie9dc14f3e528d3e4f48304f4d7de50df448a8af6
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/35016
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
This commit is contained in:
Kyösti Mälkki
2019-08-22 09:44:44 +03:00
parent 19e1d631e3
commit a165c07ed7
5 changed files with 23 additions and 45 deletions
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4
src/include/rules.h
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@ -274,8 +274,8 @@
#define ENV_CACHE_AS_RAM ENV_ROMSTAGE_OR_BEFORE
/* No .data sections with execute-in-place from ROM. */
#define ENV_STAGE_HAS_DATA_SECTION !ENV_CACHE_AS_RAM
/* No .bss sections with execute-in-place from ROM. */
#define ENV_STAGE_HAS_BSS_SECTION !ENV_CACHE_AS_RAM
/* No .bss sections for stage with CAR teardown. */
#define ENV_STAGE_HAS_BSS_SECTION !(ENV_ROMSTAGE && CONFIG(CAR_GLOBAL_MIGRATION))
#else
/* Both .data and .bss, sometimes SRAM not DRAM. */
#define ENV_STAGE_HAS_DATA_SECTION 1