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cbfstool/linux_trampoline.S: Fix up the e820 table

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The e820 type don't fully match the LB_TAG_MEMORY types, so change all
unknown types to e820 to '2', reserved memory.

TESTED with Linuxboot: e820 now shows the CBMEM region as reserved.

Change-Id: Ie0e41c66e002919e41590327afe0f543e0037369
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/55074
Reviewed-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Reviewed-by: Philipp Deppenwiese <zaolin.daisuki@gmail.com>
Reviewed-by: Rocky Phagura
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This commit is contained in:
Arthur Heymans
2021-05-29 20:07:42 +02:00
parent 29228286a2
commit 71971c9d7e
2 changed files with 21 additions and 6 deletions
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15
util/cbfstool/linux_trampoline.S
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@@ -72,7 +72,20 @@ lea 8(%ebx), %esi /* e820 data source */
mov $(LINUX_PARAM_LOC + E820_OFFSET), %edi
rep movsl
xchg %eax, %ecx
jmp .endScan
/* e820 and LB_TAG_MEMORY type don't fully match: remap unknown type to 2, reserved memory */
mov (LINUX_PARAM_LOC + E820_NR_OFFSET), %eax
mov $(LINUX_PARAM_LOC + E820_OFFSET), %edi
.test_e820_entry:
cmp $0, %eax
je .endScan
cmp $12, 16(%edi) /* type */
jng .next_e820_entry
/* Fixup the type to 2, reserved memory */
mov $2, 16(%edi)
.next_e820_entry:
dec %eax
add $20, %edi
jmp .test_e820_entry
.testFramebuffer:
cmp $CB_TAG_FRAMEBUFFER, (%ebx)