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| author | Tzung-Bi Shih <tzungbi@chromium.org> | 2020-11-12 15:22:15 +0800 |
|---|---|---|
| committer | Commit Bot <commit-bot@chromium.org> | 2020-11-17 12:07:41 +0000 |
| commit | 3ec81a13f83eb8f08166f6cbad3fe8471ef4537a (patch) | |
| tree | 6548b589e2ca2318dbd9995bbd48b7112d70db3c | |
| parent | f898db15828f720c1911b70b8a2e9985a1d8ea52 (diff) | |
| download | chrome-ec-3ec81a13f83eb8f08166f6cbad3fe8471ef4537a.tar.gz | |
common: embed IPI shared buffer address in ELF
Embeds IPI shared buffer address in ELF.
Creates a NOBITS segment for holding the address. E.g.:
$ /opt/coreboot-sdk/bin/riscv64-elf-readelf -l build/asurada_scp/ec.obj
Program Headers:
Type Offset VirtAddr PhysAddr FileSiz MemSiz Flg Align
LOAD 0x001000 0x00000000 0x00000000 0x08180 0x08180 R E 0x1000
LOAD 0x009180 0x00008180 0x00057fff 0x00001 0x00001 RW 0x1000
LOAD 0x000db0 0x000ffdb0 0x000ffdb0 0x00000 0x00250 RW 0x1000
LOAD 0x00a000 0x50000000 0x50000000 0x00180 0x00180 R E 0x1000
Section to Segment mapping:
Segment Sections...
00 .image.RW
01 .padding
02 .ipi_buffer
03 .image.RW.dram
The .ipi_buffer is at 0x000ffdb0 and its size 0x00250.
BRANCH=none
BUG=b:156222508
BUG=b:156222459
TEST=make BOARD=asurada_scp
Signed-off-by: Tzung-Bi Shih <tzungbi@chromium.org>
Change-Id: I574fafcfaa990da8c42388554945da6725e12264
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/2534230
Reviewed-by: Eric Yilun Lin <yllin@chromium.org>
| -rw-r--r-- | common/firmware_image.S | 5 | ||||
| -rw-r--r-- | common/firmware_image.lds.S | 10 |
2 files changed, 15 insertions, 0 deletions
diff --git a/common/firmware_image.S b/common/firmware_image.S index b7d0c0d19a..5c70d29069 100644 --- a/common/firmware_image.S +++ b/common/firmware_image.S @@ -58,6 +58,11 @@ .incbin FW_IMAGE_SIGN(RW,) #endif +#ifdef CONFIG_IPI +.section .ipi_buffer, "aw" +.space (CONFIG_IPC_SHARED_OBJ_BUF_SIZE + 8) * 2, 0 +#endif + #ifdef CONFIG_DRAM_BASE /* Read Write firmware in DRAM */ .section .image.RW.dram, "ax" diff --git a/common/firmware_image.lds.S b/common/firmware_image.lds.S index 7522cf792a..fc1b1f1d7d 100644 --- a/common/firmware_image.lds.S +++ b/common/firmware_image.lds.S @@ -44,6 +44,10 @@ MEMORY { FLASH (rx) : ORIGIN = CONFIG_PROGRAM_MEMORY_BASE, LENGTH = CONFIG_FLASH_SIZE +#ifdef CONFIG_IPI + IPI_BUFFER (rw) : ORIGIN = CONFIG_IPC_SHARED_OBJ_ADDR, + LENGTH = (CONFIG_IPC_SHARED_OBJ_BUF_SIZE + 8) * 2 +#endif #ifdef CONFIG_DRAM_BASE DRAM (rx) : ORIGIN = CONFIG_DRAM_BASE_LOAD, LENGTH = CONFIG_DRAM_SIZE #endif @@ -96,6 +100,12 @@ SECTIONS BYTE(0xff); } > FLASH =0xff +#ifdef CONFIG_IPI + /* The section holds address of IPI buffer but no symbols. */ + .ipi_buffer(NOLOAD) : { + } > IPI_BUFFER +#endif + #ifdef CONFIG_DRAM_BASE .image.RW.dram : AT(CONFIG_DRAM_BASE_LOAD) { *(.image.RW.dram) |