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authorEdward O'Callaghan <quasisec@google.com>2020-03-23 13:06:42 +1100
committerEdward O'Callaghan <quasisec@chromium.org>2020-03-26 05:32:40 +0000
commit0e1380683fae3fd042ff30274add110a45720aa1 (patch)
tree7821a230d23c5e4abbd460e826f667f52a74878d /src/drivers/net
parentd08bc5ad7a83f56e0114b1d01bcab853d0da5cfb (diff)
downloadcoreboot-0e1380683fae3fd042ff30274add110a45720aa1.tar.xz
drivers/net/r8168: Fix ethernet_mac[0-9] format for vpd
The format for VPD has changed s.t. the first NIC should always have a zero concat to the end. Adjust all the respective boards to shift back by one and adjust drivers/net friends to remove the 'special casing' of idx == 0. Background: https://chromeos.google.com/partner/dlm/docs/factory/vpd.html#field-ethernet_macn V.2: Fixup a code comment typo while we are here. V.3: Vary special casing semantics for idx==0 => default mac addr is set. V.4: Rework to still support the legacy path. BUG=b:152157720 BRANCH=none TEST=none Change-Id: Idf83cc621a9333186dabb668b22c4b78e211930a Signed-off-by: Edward O'Callaghan <quasisec@google.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/39771 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Furquan Shaikh <furquan@google.com>
Diffstat (limited to 'src/drivers/net')
-rw-r--r--src/drivers/net/Kconfig8
-rw-r--r--src/drivers/net/r8168.c24
2 files changed, 19 insertions, 13 deletions
diff --git a/src/drivers/net/Kconfig b/src/drivers/net/Kconfig
index 92de1ed0e7..282075b31d 100644
--- a/src/drivers/net/Kconfig
+++ b/src/drivers/net/Kconfig
@@ -19,6 +19,14 @@ config RT8168_GET_MAC_FROM_VPD
default n
select REALTEK_8168_RESET
+config RT8168_SUPPORT_LEGACY_VPD_MAC
+ bool
+ default n
+ help
+ Previously VPD expected that device_indexes set to zero were
+ special cased. Selecting this Kconfig restores the legacy
+ VPD format and behaviour. If unsure, you likely do not need this!
+
config RT8168_SET_LED_MODE
bool
default n
diff --git a/src/drivers/net/r8168.c b/src/drivers/net/r8168.c
index 99d472ce8e..eaf33f2978 100644
--- a/src/drivers/net/r8168.c
+++ b/src/drivers/net/r8168.c
@@ -141,16 +141,10 @@ static enum cb_err fetch_mac_vpd_dev_idx(u8 *macstrbuf, u8 device_index)
char key[] = "ethernet_mac "; /* Leave a space at tail to stuff an index */
/*
- * The device_index 0 is treated as an special case matching to
- * "ethernet_mac" with single NIC on DUT. When there are mulitple
- * NICs on DUT, they are mapping to "ethernet_macN", where
- * N is [0-9].
+ * Map each NIC on the DUT to "ethernet_macN", where N is [0-9].
+ * Translate index number from integer to ascii by adding '0' char.
*/
- if (device_index == 0)
- key[DEVICE_INDEX_BYTE] = '\0';
- else
- /* Translate index number from integer to ascii */
- key[DEVICE_INDEX_BYTE] = (device_index - 1) + '0';
+ key[DEVICE_INDEX_BYTE] = device_index + '0';
return fetch_mac_vpd_key(macstrbuf, key);
}
@@ -167,12 +161,16 @@ static void fetch_mac_string_vpd(struct drivers_net_config *config, u8 *macstrbu
return;
}
- /* check "ethernet_mac" first when the device index is 1 */
- if (config->device_index == 1 &&
- fetch_mac_vpd_dev_idx(macstrbuf, 0) == CB_SUCCESS)
+ if (fetch_mac_vpd_dev_idx(macstrbuf, config->device_index) == CB_SUCCESS)
return;
- if (fetch_mac_vpd_dev_idx(macstrbuf, config->device_index) != CB_SUCCESS)
+ if (!CONFIG(RT8168_SUPPORT_LEGACY_VPD_MAC)) {
+ printk(BIOS_ERR, "r8168: mac address not found in VPD,"
+ " using default 00:e0:4c:00:c0:b0\n");
+ return;
+ }
+
+ if (fetch_mac_vpd_key(macstrbuf, "ethernet_mac ") != CB_SUCCESS)
printk(BIOS_ERR, "r8168: mac address not found in VPD,"
" using default 00:e0:4c:00:c0:b0\n");
}