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| author | Bill Richardson <wfrichar@chromium.org> | 2012-05-08 08:43:18 -0700 |
|---|---|---|
| committer | Bill Richardson <wfrichar@chromium.org> | 2012-05-08 08:49:52 -0700 |
| commit | 4679f8f194153bc4bf9a9a16f4f4ce1b924d9e7d (patch) | |
| tree | 9919f249b6b53617259d6417bbcd15e2e45eead3 | |
| parent | 468e34d51df1ab4cc934267c80d7a1e18406c845 (diff) | |
| download | chrome-ec-4679f8f194153bc4bf9a9a16f4f4ce1b924d9e7d.tar.gz | |
Mark end of each RW firmware image so we can find it.
This just adds a single byte to the end of the RW firmware, so that we can
scan backwards from the end of the reserved block, skipping 0xff until we
find the actual firmware size. We need this so we can resign existing
firmware images without either signing a bunch of padding or forgetting to
sign a trailing 0xff that might be important.
BUG=chrome-os-partner:7459
TEST=none
Change-Id: If5cadb4d58c1bce39f66815c328ffd18cc3d444b
Signed-off-by: Bill Richardson <wfrichar@chromium.org>
| -rw-r--r-- | common/firmware_image.lds.S | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/common/firmware_image.lds.S b/common/firmware_image.lds.S index 3b2ef7f561..bfaaaee7f4 100644 --- a/common/firmware_image.lds.S +++ b/common/firmware_image.lds.S @@ -20,11 +20,13 @@ SECTIONS . = ALIGN(CONFIG_FLASH_BANK_SIZE); .image.A : AT(CONFIG_FW_A_OFF) { *(.image.A) + BYTE(0xEA) /* Mark end explicitly */ } > FLASH =0xff #ifndef CONFIG_NO_RW_B . = ALIGN(CONFIG_FLASH_BANK_SIZE); .image.B : AT(CONFIG_FW_B_OFF) { *(.image.B) + BYTE(0xEB) /* Mark end explicitly */ } > FLASH =0xff #endif /* NOTE: EC implementation reserves one bank for itself */ |