Add board hooks allowing to get ethernet addresses in a board specific manner. Currently this is done by generating a MAC address from the SID and injecting the ethernet device number in the first octet.
This usually happens as a fallback, if either the eeprom fails to set a MAC address or the FDT forces an override.
Signed-off-by: Olliver Schinagl oliver@schinagl.nl --- arch/arm/include/asm/arch-sunxi/sys_proto.h | 11 ++ board/sunxi/board.c | 161 +++++++++++++++------------- net/eth_legacy.c | 1 + 3 files changed, 98 insertions(+), 75 deletions(-)
diff --git a/arch/arm/include/asm/arch-sunxi/sys_proto.h b/arch/arm/include/asm/arch-sunxi/sys_proto.h index a373319..fad7c48 100644 --- a/arch/arm/include/asm/arch-sunxi/sys_proto.h +++ b/arch/arm/include/asm/arch-sunxi/sys_proto.h @@ -30,4 +30,15 @@ void eth_init_board(void); static inline void eth_init_board(void) {} #endif
+int board_get_enetaddr(const int i, unsigned char *mac_addr); + +#if CONFIG_SUNXI_EMAC +int sunxi_emac_board_read_rom_hwaddr(unsigned char *enetaddr, int id); +#endif + +#if defined(CONFIG_SUNXI_GMAC) || defined(CONFIG_ETH_DESIGNWARE) +int dw_board_read_rom_hwaddr(unsigned char *enetaddr, int id); +#endif + + #endif diff --git a/board/sunxi/board.c b/board/sunxi/board.c index 5365638..4aeab51 100644 --- a/board/sunxi/board.c +++ b/board/sunxi/board.c @@ -21,6 +21,7 @@ #include <asm/arch/gpio.h> #include <asm/arch/mmc.h> #include <asm/arch/spl.h> +#include <asm/arch/sys_proto.h> #include <asm/arch/usb_phy.h> #ifndef CONFIG_ARM64 #include <asm/armv7.h> @@ -564,6 +565,34 @@ int g_dnl_board_usb_cable_connected(void) } #endif
+int sunxi_get_board_serial(unsigned int *serial) +{ + int ret; + + ret = sunxi_get_sid(serial); + if (!ret || serial[0]) + return -ENOSYS; + + /* + * The single words 1 - 3 of the SID have quite a few bits + * which are the same on many models, so we take a crc32 + * of all 3 words, to get a more unique value. + * + * Note we only do this on newer SoCs as we cannot change + * the algorithm on older SoCs since those have been using + * fixed mac-addresses/serial based on only using word 3 for a + * long time and changing a fixed mac-address/serial with an + * u-boot update is not good. + */ +#if !defined(CONFIG_MACH_SUN4I) && !defined(CONFIG_MACH_SUN5I) && \ + !defined(CONFIG_MACH_SUN6I) && !defined(CONFIG_MACH_SUN7I) && \ + !defined(CONFIG_MACH_SUN8I_A23) && !defined(CONFIG_MACH_SUN8I_A33) + serial[3] = crc32(0, (unsigned char *)&serial[1], 12); +#endif + + return 0; +} + #ifdef CONFIG_SERIAL_TAG void get_board_serial(struct tag_serialnr *serialnr) { @@ -585,6 +614,54 @@ void get_board_serial(struct tag_serialnr *serialnr) #endif
/* + * Generate a MAC address based on device index and the serial number. + * The first half of the of the first octet holds the eth index. + * + * In the second octet we forcefully mark the MAC address to a locally + * administered MAC address. + * + */ +int board_get_enetaddr(const int index, unsigned char *enetaddr) +{ + uint8_t mac_addr[ARP_HLEN] = { 0x00 }; + unsigned int serial[4]; + int ret; + + if ((index < 0) || !enetaddr) + return -ENOSYS; + + ret = sunxi_get_board_serial(serial); + if (!ret) + return ret; + + /* Ensure the NIC specific bytes of the mac are not all 0 */ + if ((serial[3] & 0xffffff) == 0) + serial[3] |= 0x800000; + + mac_addr[0] = (index << 4); + mac_addr[1] = (serial[0] >> 0) & 0xff; + mac_addr[2] = (serial[3] >> 24) & 0xff; + mac_addr[3] = (serial[3] >> 16) & 0xff; + mac_addr[4] = (serial[3] >> 8) & 0xff; + mac_addr[5] = (serial[3] >> 0) & 0xff; + + set_local_ethaddr(mac_addr); + memcpy(enetaddr, mac_addr, ARP_HLEN); + + return 0; +} + +int sunxi_emac_board_read_rom_hwaddr(unsigned char *enetaddr, int id) +{ + return board_get_enetaddr(id, enetaddr); +} + +int dw_board_read_rom_hwaddr(unsigned char *enetaddr, int id) +{ + return board_get_enetaddr(id, enetaddr); +} + +/* * Check the SPL header for the "sunxi" variant. If found: parse values * that might have been passed by the loader ("fel" utility), and update * the environment accordingly. @@ -617,77 +694,10 @@ static void parse_spl_header(const uint32_t spl_addr) setenv_hex("fel_scriptaddr", spl->fel_script_address); }
-/* - * Note this function gets called multiple times. - * It must not make any changes to env variables which already exist. - */ -static void setup_environment(const void *fdt) -{ - char serial_string[17] = { 0 }; - unsigned int sid[4]; - uint8_t mac_addr[6]; - char ethaddr[16]; - int i, ret; - - ret = sunxi_get_sid(sid); - if (ret == 0 && sid[0] != 0) { - /* - * The single words 1 - 3 of the SID have quite a few bits - * which are the same on many models, so we take a crc32 - * of all 3 words, to get a more unique value. - * - * Note we only do this on newer SoCs as we cannot change - * the algorithm on older SoCs since those have been using - * fixed mac-addresses based on only using word 3 for a - * long time and changing a fixed mac-address with an - * u-boot update is not good. - */ -#if !defined(CONFIG_MACH_SUN4I) && !defined(CONFIG_MACH_SUN5I) && \ - !defined(CONFIG_MACH_SUN6I) && !defined(CONFIG_MACH_SUN7I) && \ - !defined(CONFIG_MACH_SUN8I_A23) && !defined(CONFIG_MACH_SUN8I_A33) - sid[3] = crc32(0, (unsigned char *)&sid[1], 12); -#endif - - /* Ensure the NIC specific bytes of the mac are not all 0 */ - if ((sid[3] & 0xffffff) == 0) - sid[3] |= 0x800000; - - for (i = 0; i < 4; i++) { - sprintf(ethaddr, "ethernet%d", i); - if (!fdt_get_alias(fdt, ethaddr)) - continue; - - if (i == 0) - strcpy(ethaddr, "ethaddr"); - else - sprintf(ethaddr, "eth%daddr", i); - - if (getenv(ethaddr)) - continue; - - /* Non OUI / registered MAC address */ - mac_addr[0] = (i << 4) | 0x02; - mac_addr[1] = (sid[0] >> 0) & 0xff; - mac_addr[2] = (sid[3] >> 24) & 0xff; - mac_addr[3] = (sid[3] >> 16) & 0xff; - mac_addr[4] = (sid[3] >> 8) & 0xff; - mac_addr[5] = (sid[3] >> 0) & 0xff; - - eth_setenv_enetaddr(ethaddr, mac_addr); - } - - if (!getenv("serial#")) { - snprintf(serial_string, sizeof(serial_string), - "%08x%08x", sid[0], sid[3]); - - setenv("serial#", serial_string); - } - } -} - int misc_init_r(void) { __maybe_unused int ret; + unsigned int serial[4];
setenv("fel_booted", NULL); setenv("fel_scriptaddr", NULL); @@ -697,7 +707,14 @@ int misc_init_r(void) parse_spl_header(SPL_ADDR); }
- setup_environment(gd->fdt_blob); + if (sunxi_get_board_serial(serial)) { + char serial_string[17] = { 0 }; + + snprintf(serial_string, sizeof(serial_string), + "%08x%08x", serial[0], serial[3]); + + setenv("serial#", serial_string); + }
#ifndef CONFIG_MACH_SUN9I ret = sunxi_usb_phy_probe(); @@ -713,12 +730,6 @@ int ft_board_setup(void *blob, bd_t *bd) { int __maybe_unused r;
- /* - * Call setup_environment again in case the boot fdt has - * ethernet aliases the u-boot copy does not have. - */ - setup_environment(blob); - #ifdef CONFIG_VIDEO_DT_SIMPLEFB r = sunxi_simplefb_setup(blob); if (r) diff --git a/net/eth_legacy.c b/net/eth_legacy.c index d6d7cee..b8b1e3b 100644 --- a/net/eth_legacy.c +++ b/net/eth_legacy.c @@ -10,6 +10,7 @@ #include <command.h> #include <environment.h> #include <net.h> +#include <i2c.h> #include <phy.h> #include <linux/errno.h> #include "eth_internal.h"