diff options
| author | Furquan Shaikh <furquan@google.com> | 2021-03-13 22:54:16 -0800 |
|---|---|---|
| committer | Patrick Georgi <pgeorgi@google.com> | 2021-03-17 07:56:13 +0000 |
| commit | 7fe5d3d382e25fbdd5026c8e0231dc5a10b57931 (patch) | |
| tree | f97fe6e53afe9ff6f61eee4303cd8b5377c7e87d /src/vendorcode/google/chromeos/sar.c | |
| parent | 31f6320afeedfe622b0af51360078be28d26e378 (diff) | |
sar: Fix semantics of `get_wifi_sar_cbfs_filename()`
Currently, if `get_wifi_sar_cbfs_filename()` returns NULL, then
`get_wifi_sar_limits()` assumes that the default filename is used for
CBFS SAR file. This prevents a board from supporting different models
using the same firmware -- some which require SAR support and some
which don't.
This change updates the logic in `get_wifi_sar_limits()` to return
early if filename is not provided by the mainboard. In order to
maintain the same logic as before, current mainboards are updated to
return WIFI_SAR_CBFS_DEFAULT_FILENAME instead of NULL in default
case.
Change-Id: I68b5bdd213767a3cd81fe41ace66540acd68e26a
Signed-off-by: Furquan Shaikh <furquan@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/51485
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src/vendorcode/google/chromeos/sar.c')
| -rw-r--r-- | src/vendorcode/google/chromeos/sar.c | 14 |
1 files changed, 7 insertions, 7 deletions
diff --git a/src/vendorcode/google/chromeos/sar.c b/src/vendorcode/google/chromeos/sar.c index 83c1c0ca20..a38ffe270b 100644 --- a/src/vendorcode/google/chromeos/sar.c +++ b/src/vendorcode/google/chromeos/sar.c @@ -9,8 +9,6 @@ #include <string.h> #include <types.h> -#define WIFI_SAR_CBFS_FILENAME "wifi_sar_defaults.hex" - /* * Retrieve WiFi SAR limits data from CBFS and decode it * WiFi SAR data is expected in the format: [<WRDD><EWRD>][WGDS] @@ -37,6 +35,12 @@ int get_wifi_sar_limits(struct wifi_sar_limits *sar_limits) char *sar_str; int ret = -1; + filename = get_wifi_sar_cbfs_filename(); + if (filename == NULL) { + printk(BIOS_DEBUG, "Filename missing for CBFS SAR file!\n"); + return ret; + } + /* * If GEO_SAR_ENABLE is not selected, SAR file does not contain * delta table settings. @@ -64,10 +68,6 @@ int get_wifi_sar_limits(struct wifi_sar_limits *sar_limits) printk(BIOS_DEBUG, "Checking CBFS for default SAR values\n"); - filename = get_wifi_sar_cbfs_filename(); - if (filename == NULL) - filename = WIFI_SAR_CBFS_FILENAME; - if (cbfs_load(filename, sar_str, sar_str_len) != sar_str_len) { printk(BIOS_ERR, "%s has bad len in CBFS\n", filename); goto done; @@ -88,5 +88,5 @@ done: __weak const char *get_wifi_sar_cbfs_filename(void) { - return WIFI_SAR_CBFS_FILENAME; + return WIFI_SAR_CBFS_DEFAULT_FILENAME; } |