diff options
| author | Eric Lai <eric_lai@quanta.corp-partner.google.com> | 2022-12-14 15:48:35 +0800 |
|---|---|---|
| committer | Martin L Roth <gaumless@gmail.com> | 2022-12-17 20:43:16 +0000 |
| commit | 5b89bf4666424bb9b5c72d8fa2b30a124ac1026d (patch) | |
| tree | 4170645a6ec2d2078a70e8e6f61df948cbd03f4b /src/include | |
| parent | f49fcc6bf5ced406ce614ff8cc4dd7f172b38d65 (diff) | |
lib: Introduce fw_config_get_field
In some cases, fw_config is used for ids like sar_id, sku_id etc.
To avoid calling fw_config_probe over and over, hence provide the
method to return the value then caller can use the switch case
instead of if else statement.
TEST=get fw_config field value on nivviks.
[INFO ] fw_config get field name=DB_USB, mask=0x3, shift=0, value =0x1
Signed-off-by: Eric Lai <eric_lai@quanta.corp-partner.google.com>
Change-Id: Iae89668e8fe7322d5a4dcbf88a97d7ed36619af5
Reviewed-on: https://review.coreboot.org/c/coreboot/+/70745
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
Reviewed-by: Tim Wawrzynczak <inforichland@gmail.com>
Diffstat (limited to 'src/include')
| -rw-r--r-- | src/include/fw_config.h | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/src/include/fw_config.h b/src/include/fw_config.h index 7a8ad30482..04fdf98921 100644 --- a/src/include/fw_config.h +++ b/src/include/fw_config.h @@ -24,6 +24,11 @@ struct fw_config { uint64_t value; }; +struct fw_config_field { + const char *field_name; + uint64_t mask; +}; + /* Generate a pointer to a compound literal of the fw_config structure. */ #define FW_CONFIG(__field, __option) (&(const struct fw_config) { \ .field_name = FW_CONFIG_FIELD_##__field##_NAME, \ @@ -32,6 +37,11 @@ struct fw_config { .value = FW_CONFIG_FIELD_##__field##_OPTION_##__option##_VALUE \ }) +#define FW_CONFIG_FIELD(__field) (&(const struct fw_config_field) { \ + .field_name = FW_CONFIG_FIELD_##__field##_NAME, \ + .mask = FW_CONFIG_FIELD_##__field##_MASK, \ +}) + /** * fw_config_get() - Provide firmware configuration value. * @@ -42,6 +52,16 @@ uint64_t fw_config_get(void); #if CONFIG(FW_CONFIG) /** + * fw_config_get_field() - Provide firmware configuration field value. + * @field: Structure containing field name and mask + * + * Return 64bit firmware configuration value determined for the system. + * Will return UNDEFINED_FW_CONFIG if unprovisioned, caller should treat + * as error value for the case. + */ +uint64_t fw_config_get_field(const struct fw_config_field *field); + +/** * fw_config_probe() - Check if field and option matches. * @match: Structure containing field and option to probe. * |