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| author | Louis Yung-Chieh Lo <yjlou@chromium.org> | 2012-07-23 18:25:15 +0800 |
|---|---|---|
| committer | Gerrit <chrome-bot@google.com> | 2012-07-24 17:38:10 -0700 |
| commit | 3ab8ed4124ec3feffb6a04ce86e2329467e8efc6 (patch) | |
| tree | e5a0732d4634c11cf93c0ede70a6892a5892fab1 | |
| parent | 78848688465a4f85f7bbcb1b45449e0318583014 (diff) | |
| download | chrome-ec-3ab8ed4124ec3feffb6a04ce86e2329467e8efc6.tar.gz | |
Add RW offset query interface (EC_CMD_FLASH_RW_OFFSET).
BUG=chrome-os-partner:11149
TEST=build only.
Originally-Signed-off-by: Louis Yung-Chieh Lo <yjlou@chromium.org>
Change-Id: I35ad1e0a49c95a2d6cffbe49b2013a1b8050aabc
Signed-off-by: Randall Spangler <rspangler@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/28166
| -rw-r--r-- | common/flash_common.c | 31 | ||||
| -rw-r--r-- | include/ec_commands.h | 26 |
2 files changed, 57 insertions, 0 deletions
diff --git a/common/flash_common.c b/common/flash_common.c index f09868431b..fac124701a 100644 --- a/common/flash_common.c +++ b/common/flash_common.c @@ -332,3 +332,34 @@ static int flash_command_protect(struct host_cmd_handler_args *args) DECLARE_HOST_COMMAND(EC_CMD_FLASH_PROTECT, flash_command_protect, EC_VER_MASK(1)); + +static int flash_command_region_info(struct host_cmd_handler_args *args) +{ + struct ec_params_flash_region_info *p = + (struct ec_params_flash_region_info *)args->params; + struct ec_response_flash_region_info *r = + (struct ec_response_flash_region_info *)args->response; + + switch (p->region) { + case EC_FLASH_REGION_RO: + r->offset = CONFIG_SECTION_RO_OFF; + r->size = CONFIG_SECTION_RO_SIZE; + break; + case EC_FLASH_REGION_RW: + r->offset = CONFIG_SECTION_RW_OFF; + r->size = CONFIG_SECTION_RW_SIZE; + break; + case EC_FLASH_REGION_WP_RO: + r->offset = CONFIG_SECTION_RO_OFF; + r->size = CONFIG_SECTION_RO_SIZE; + break; + default: + return EC_RES_INVALID_PARAM; + } + + args->response_size = sizeof(*r); + return EC_RES_SUCCESS; +} +DECLARE_HOST_COMMAND(EC_CMD_FLASH_REGION_INFO, + flash_command_region_info, + EC_VER_MASK(EC_VER_FLASH_REGION_INFO)); diff --git a/include/ec_commands.h b/include/ec_commands.h index d6337a20ae..f6680ca8b0 100644 --- a/include/ec_commands.h +++ b/include/ec_commands.h @@ -501,6 +501,32 @@ struct ec_response_flash_protect { * write protect. These commands may be reused with version > 0. */ +/* Get the region offset/size */ +#define EC_CMD_FLASH_REGION_INFO 0x16 +#define EC_VER_FLASH_REGION_INFO 1 + +enum ec_flash_region { + /* Region which holds read-only EC image */ + EC_FLASH_REGION_RO, + /* Region which holds rewritable EC image */ + EC_FLASH_REGION_RW, + /* + * Region which should be write-protected in the factory (a superset of + * EC_FLASH_REGION_RO) + */ + EC_FLASH_REGION_WP_RO, +}; + +struct ec_params_flash_region_info { + uint32_t region; /* enum ec_flash_region */ +} __packed; + +struct ec_response_flash_region_info { + uint32_t offset; + uint32_t size; +} __packed; + + /*****************************************************************************/ /* PWM commands */ |