scottk/OpenCellular
1
0
Fork 0
mirror of https://github.com/Telecominfraproject/OpenCellular.git synced 2026-01-05 22:41:44 +00:00
Code Issues Packages Projects Releases Wiki Activity

cr50: write protect area where the code jumps to

Browse Source 
The launcher should explicitly disable writes to the code space where
the loaded code is going to be running from.

BRANCH=None
BUG=chrome-os-partner:37554
TEST=with the rest of the patches applied firmware updates work as
     expected.

Change-Id: I744f7016e4427188f53e8fa3302e8c06cf836e2e
Signed-off-by: Vadim Bendebury <vbendeb@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/327413
Reviewed-by: Marius Schilder <mschilder@chromium.org>
This commit is contained in:
Vadim Bendebury
2016-02-11 15:19:48 -08:00
committed by chrome-bot
parent a0ee706819
commit 758ef07150
1 changed files with 2 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

3
chip/g/loader/launch.c
View File

@@ -221,11 +221,12 @@ void tryLaunch(uint32_t adr, size_t max_size)
GREG32(GLOBALSEC, FLASH_REGION1_SIZE) = hdr->image_size - 1;
GWRITE_FIELD(GLOBALSEC, FLASH_REGION1_CTRL, EN, 1);
GWRITE_FIELD(GLOBALSEC, FLASH_REGION1_CTRL, RD_EN, 1);
GWRITE_FIELD(GLOBALSEC, FLASH_REGION1_CTRL, WR_EN, 0);
/* TODO: lock FLASH_REGION 1? */
disarmRAMGuards();
debug_printf("Valid image found at 0x%08x, jumping\n", hdr);
debug_printf("Valid image found at 0x%08x, jumping", hdr);
uart_tx_flush();
_jump_to_address(&hdr[1]);