diff options
Diffstat (limited to 'chip/g/flash.c')
| -rw-r--r-- | chip/g/flash.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/chip/g/flash.c b/chip/g/flash.c index 22376d5fbe..04074cc3b5 100644 --- a/chip/g/flash.c +++ b/chip/g/flash.c @@ -45,6 +45,16 @@ int flash_pre_init(void) { + /* Enable access to the upper half of the flash */ + uint32_t half = CONFIG_FLASH_SIZE / 2; + + GWRITE(GLOBALSEC, FLASH_REGION2_BASE_ADDR, + CONFIG_MAPPED_STORAGE_BASE + half); + GWRITE(GLOBALSEC, FLASH_REGION2_SIZE, half - 1); + GWRITE_FIELD(GLOBALSEC, FLASH_REGION2_CTRL, WR_EN, 1); + GWRITE_FIELD(GLOBALSEC, FLASH_REGION2_CTRL, RD_EN, 1); + GWRITE_FIELD(GLOBALSEC, FLASH_REGION2_CTRL, EN, 1); + return EC_SUCCESS; } |