On Thu, Jun 07, 2018 at 09:55:50PM +0200, Oleksij Rempel wrote:
> From: Oleksij Rempel <linux@xxxxxxxxxxxxxxxx>
>
> this partition contains calibration data for WiFi and
> some board specific data, like MAC address.
>
> For now we care only about MAC.
>
> Signed-off-by: Oleksij Rempel <linux@xxxxxxxxxxxxxxxx>
> ---
Applied, thanks
Sascha
> arch/mips/mach-ath79/Makefile | 1 +
> arch/mips/mach-ath79/art.c | 112 ++++++++++++++++++++++++++++++++++
> 2 files changed, 113 insertions(+)
> create mode 100644 arch/mips/mach-ath79/art.c
>
> diff --git a/arch/mips/mach-ath79/Makefile b/arch/mips/mach-ath79/Makefile
> index 3772daeba..b827b363c 100644
> --- a/arch/mips/mach-ath79/Makefile
> +++ b/arch/mips/mach-ath79/Makefile
> @@ -1,2 +1,3 @@
> obj-y += reset.o
> obj-y += bbu.o
> +obj-y += art.o
> diff --git a/arch/mips/mach-ath79/art.c b/arch/mips/mach-ath79/art.c
> new file mode 100644
> index 000000000..984d08736
> --- /dev/null
> +++ b/arch/mips/mach-ath79/art.c
> @@ -0,0 +1,112 @@
> +// SPDX-License-Identifier: GPL-2.
> +/*
> + * Copyright (c) 2018 Oleksij Rempel <linux@xxxxxxxxxxxxxxxx>
> + */
> +
> +#include <common.h>
> +#include <fcntl.h>
> +#include <init.h>
> +#include <libfile.h>
> +#include <net.h>
> +#include <unistd.h>
> +
> +#define AR93000_EPPROM_OFFSET 0x1000
> +
> +struct ar9300_eeprom {
> + u8 eeprom_version;
> + u8 template_version;
> + u8 mac_addr[6];
> +};
> +
> +static int art_set_mac(struct device_d *dev, struct ar9300_eeprom *eeprom)
> +{
> + struct device_node *node = dev->device_node;
> + struct device_node *rnode;
> +
> + if (!node)
> + return -ENOENT;
> +
> + rnode = of_parse_phandle_from(node, NULL,
> + "barebox,provide-mac-address", 0);
> + if (!rnode)
> + return -ENOENT;
> +
> + of_eth_register_ethaddr(rnode, &eeprom->mac_addr[0]);
> +
> + return 0;
> +}
> +
> +static int art_read_mac(struct device_d *dev, const char *file)
> +{
> + int fd, rbytes;
> + struct ar9300_eeprom eeprom;
> +
> + fd = open_and_lseek(file, O_RDONLY, AR93000_EPPROM_OFFSET);
> + if (fd < 0) {
> + dev_err(dev, "Failed to open eeprom path %s %d\n",
> + file, fd);
> + return fd;
> + }
> +
> + rbytes = read_full(fd, &eeprom, sizeof(eeprom));
> + close(fd);
> + if (rbytes < sizeof(eeprom)) {
> + dev_err(dev, "Failed to read %s\n", file);
> + return rbytes < 0 ? rbytes : -EIO;
> + }
> +
> + dev_dbg(dev, "ART version: %x.%x\n",
> + eeprom.eeprom_version, eeprom.template_version);
> + dev_dbg(dev, "mac: %02x:%02x:%02x:%02x:%02x:%02x\n",
> + eeprom.mac_addr[0],
> + eeprom.mac_addr[1],
> + eeprom.mac_addr[2],
> + eeprom.mac_addr[3],
> + eeprom.mac_addr[4],
> + eeprom.mac_addr[5]);
> +
> + if (!is_valid_ether_addr(&eeprom.mac_addr[0])) {
> + dev_err(dev, "bad MAC addr\n");
> + return -EILSEQ;
> + }
> +
> + return art_set_mac(dev, &eeprom);
> +}
> +
> +static int art_probe(struct device_d *dev)
> +{
> + char *path;
> + int ret;
> +
> + dev_dbg(dev, "found ART partition\n");
> +
> + ret = of_find_path(dev->device_node, "device-path", &path, 0);
> + if (ret) {
> + dev_err(dev, "can't find path\n");
> + return ret;
> + }
> +
> + return art_read_mac(dev, path);
> +}
> +
> +static struct of_device_id art_dt_ids[] = {
> + {
> + .compatible = "qca,art",
> + }, {
> + /* sentinel */
> + }
> +};
> +
> +static struct driver_d art_driver = {
> + .name = "qca-art",
> + .probe = art_probe,
> + .of_compatible = art_dt_ids,
> +};
> +
> +static int art_of_driver_init(void)
> +{
> + platform_driver_register(&art_driver);
> +
> + return 0;
> +}
> +late_initcall(art_of_driver_init);
> --
> 2.17.1
>
>
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