[PATCH] board: amlogic: vim3: setup ethernet mac from efuse

[Neil Armstrong]

Hi,

On 11/01/2021 15:15, Art Nikpal wrote:
>> So the patch from Marek (https://patchwork.ozlabs.org/project/uboot/patch/20201217072642.1319-1-m.szyprowski@samsung.com/) doesn't work ?
> yes doesnt works properly im sure if we read as raw 6 bytes from efuse we have
> 
> if (is_valid_ethaddr(mac_addr)) # is always not valid
> eth_env_set_enetaddr("ethaddr", mac_addr);
> else    # and always generated from serial 
> meson_generate_serial_ethaddr();
> 
>> Are you sure the MAC is stored in ASCII like Odroid-N2 ?
> yes im check two times on my vim3 vim3l boards and our amlogic vendor uboot have same method

OK, can you send a patch over the https://gitlab.denx.de/u-boot/custodians/u-boot-amlogic/-/tree/u-boot-amlogic-next branch ?

Neil

> 
> On Mon, Jan 11, 2021 at 9:59 PM Neil Armstrong <narmstrong at baylibre.com <mailto:narmstrong at baylibre.com>> wrote:
> 
>     Hi Artem,
> 
>     On 11/01/2021 12:19, Artem Lapkin wrote:
>     > Add the board specific code for reading built-in ethernet MAC address from efuse
>     >
>     > NOTE: MAC is stored in ASCII format, 1bytes = 2characters by 0 offset
>     >
>     > if mac from efuse not valid we use meson_generate_serial_ethaddr
>     >
>     > NOTE: remake odroid-n2.c variant from Neil Armstrong <narmstrong at baylibre.com <mailto:narmstrong at baylibre.com>>
> 
>     So the patch from Marek (https://patchwork.ozlabs.org/project/uboot/patch/20201217072642.1319-1-m.szyprowski@samsung.com/) doesn't work ?
>     Are you sure the MAC is stored in ASCII like Odroid-N2 ?
> 
>     Please look at my u-boot-amlogic-next tree I will push this week for the next u-boot release:
>     https://gitlab.denx.de/u-boot/custodians/u-boot-amlogic/-/tree/u-boot-amlogic-next
> 
>     Neil
> 
>     >
>     > Signed-off-by: Artem Lapkin <art at khadas.com <mailto:art at khadas.com>>
>     > ---
>     >  board/amlogic/vim3/vim3.c | 35 +++++++++++++++++++++++++++++++++++
>     >  1 file changed, 35 insertions(+)
>     >
>     > diff --git a/board/amlogic/vim3/vim3.c b/board/amlogic/vim3/vim3.c
>     > index 09ef39ff30..c5d19cc17b 100644
>     > --- a/board/amlogic/vim3/vim3.c
>     > +++ b/board/amlogic/vim3/vim3.c
>     > @@ -11,9 +11,14 @@
>     >  #include <net.h>
>     >  #include <asm/io.h>
>     >  #include <asm/arch/eth.h>
>     > +#include <asm/arch/sm.h>
>     >  #include <i2c.h>
>     >  #include "khadas-mcu.h"
>     > 
>     > +#define EFUSE_MAC_OFFSET     0
>     > +#define EFUSE_MAC_SIZE               12
>     > +#define MAC_ADDR_LEN         6
>     > +
>     >  /*
>     >   * The VIM3 on-board  MCU can mux the PCIe/USB3.0 shared differential
>     >   * lines using a FUSB340TMX USB 3.1 SuperSpeed Data Switch between
>     > @@ -131,7 +136,37 @@ int meson_ft_board_setup(void *blob, struct bd_info *bd)
>     > 
>     >  int misc_init_r(void)
>     >  {
>     > +     u8 mac_addr[MAC_ADDR_LEN];
>     > +     char efuse_mac_addr[EFUSE_MAC_SIZE], tmp[3];
>     > +     ssize_t len;
>     > +
>     >       meson_eth_init(PHY_INTERFACE_MODE_RGMII, 0);
>     > 
>     > +     if (!eth_env_get_enetaddr("ethaddr", mac_addr)) {
>     > +
>     > +             len = meson_sm_read_efuse(EFUSE_MAC_OFFSET, efuse_mac_addr, EFUSE_MAC_SIZE);
>     > +             if (len != EFUSE_MAC_SIZE)
>     > +                     return 0;
>     > +
>     > +             /* MAC is stored in ASCII format, 1bytes = 2characters */
>     > +             for (int i = 0; i < 6; i++) {
>     > +                     tmp[0] = efuse_mac_addr[i * 2];
>     > +                     tmp[1] = efuse_mac_addr[i * 2 + 1];
>     > +                     tmp[2] = '\0';
>     > +                     mac_addr[i] = simple_strtoul(tmp, NULL, 16);
>     > +             }
>     > +
>     > +             if (is_valid_ethaddr(mac_addr))
>     > +                     eth_env_set_enetaddr("ethaddr", mac_addr);
>     > +             else
>     > +                     meson_generate_serial_ethaddr();
>     > +
>     > +             eth_env_get_enetaddr("ethaddr", mac_addr);
>     > +             printf("[i] setup onboard mac %02X:%02X:%02X:%02X:%02X:%02X\n",
>     > +                     mac_addr[0],mac_addr[1],mac_addr[2],
>     > +                     mac_addr[3],mac_addr[4],mac_addr[5]);
>     > +
>     > +     }
>     > +
>     >       return 0;
>     >  }
>     >
>