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db410: alter WLAN/BT MAC address fixup

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Change the way MAC address fixup is done:
1. Stop using LK handed device-tree and calculate
   the MAC address our own.
2. Allow overriding the generated MACS with environment variables:
   "wlanaddr" and  "btaddr".

Signed-off-by: Ramon Fried <ramon.fried@gmail.com>
This commit is contained in:
Ramon Fried 2018-08-03 16:25:37 +03:00 committed by Tom Rini
parent e0b04a1525
commit ff06dc2403
1 changed files with 29 additions and 29 deletions
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58
board/qualcomm/dragonboard410c/dragonboard410c.c
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@ -10,7 +10,9 @@
#include <usb.h> #include <usb.h>
#include <asm/gpio.h> #include <asm/gpio.h>
#include <fdt_support.h> #include <fdt_support.h>
#include <environment.h>
#include <asm/arch/dram.h> #include <asm/arch/dram.h>
#include <asm/arch/misc.h>
DECLARE_GLOBAL_DATA_PTR; DECLARE_GLOBAL_DATA_PTR;
@ -149,40 +151,38 @@ int board_init(void)
return 0; return 0;
} }
/* Fixup of DTB for Linux Kernel
* 1. Fixup installed DRAM.
* 2. Fixup WLAN/BT Mac address:
* First, check if MAC addresses for WLAN/BT exists as environemnt
* variables wlanaddr,btaddr. if not, generate a unique address.
*/
int ft_board_setup(void *blob, bd_t *bd) int ft_board_setup(void *blob, bd_t *bd)
{ {
int offset, len, i; u8 mac[ARP_HLEN];
const char *mac;
struct {
const char *compatible;
const char *property;
} fix[] = {
[0] = {
/* update the kernel's dtb with wlan mac */
.compatible = "qcom,wcnss-wlan",
.property = "local-mac-address",
},
[1] = {
/* update the kernel's dtb with bt mac */
.compatible = "qcom,wcnss-bt",
.property = "local-bd-address",
},
};
for (i = 0; i < sizeof(fix) / sizeof(fix[0]); i++) {
offset = fdt_node_offset_by_compatible(gd->fdt_blob, -1,
fix[i].compatible);
if (offset < 0)
continue;
mac = fdt_getprop(gd->fdt_blob, offset, fix[i].property, &len);
if (mac)
do_fixup_by_compat(blob, fix[i].compatible,
fix[i].property, mac, ARP_HLEN, 1);
}
msm_fixup_memory(blob); msm_fixup_memory(blob);
if (!eth_env_get_enetaddr("wlanaddr", mac)) {
msm_generate_mac_addr(mac);
};
do_fixup_by_compat(blob, "qcom,wcnss-wlan",
"local-mac-address", mac, ARP_HLEN, 1);
if (!eth_env_get_enetaddr("btaddr", mac)) {
msm_generate_mac_addr(mac);
/* The BD address is same as WLAN MAC address but with
* least significant bit flipped.
*/
mac[0] ^= 0x01;
};
do_fixup_by_compat(blob, "qcom,wcnss-bt",
"local-bd-address", mac, ARP_HLEN, 1);
return 0; return 0;
} }