ar71xx: add support for RB-941-2nD

Add full support for Mikrotik RB-941-2nD (hAP lite)

Original patch by Sergey Sergeev <adron@yapic.net> and
more information is available here:
https://wiki.openwrt.org/toh/mikrotik/rb941_2nd
I updated and adapted the patch to apply cleanly to LEDE trunk
and added proper numbering for the switch ports (matching case
labels).
Tested working on actual hardware with the information
provided in the above webpage. Sysupgrade works.

Signed-off-by: Thibaut VARENE <hacks@slashdirt.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>

1 files changed, 174 insertions, 0 deletions

diff --git a/target/linux/ar71xx/files/arch/mips/ath79/mach-rb941.c b/target/linux/ar71xx/files/arch/mips/ath79/mach-rb941.c
new file mode 100644
index 0000000000..5a8c7c0251
--- /dev/null
+++ b/target/linux/ar71xx/files/arch/mips/ath79/mach-rb941.c
@@ -0,0 +1,174 @@
+/*
+ *  MikroTik RouterBOARD 941-2nD support
+ *
+ *  Copyright (C) 2016 Sergey Sergeev <adron@yapic.net>
+ *
+ *  This program is free software; you can redistribute it and/or modify it
+ *  under the terms of the GNU General Public License version 2 as published
+ *  by the Free Software Foundation.
+ */
+
+#include <linux/export.h>
+#include <linux/pci.h>
+#include <linux/ath9k_platform.h>
+#include <linux/platform_device.h>
+#include <linux/phy.h>
+#include <linux/ar8216_platform.h>
+#include <linux/rle.h>
+#include <linux/routerboot.h>
+#include <linux/gpio.h>
+
+#include <linux/mtd/mtd.h>
+//#include <linux/mtd/nand.h>
+#include <linux/mtd/partitions.h>
+
+#include <asm/mach-ath79/ar71xx_regs.h>
+#include <asm/mach-ath79/ath79.h>
+#include <asm/mach-ath79/irq.h>
+
+#include "common.h"
+#include "dev-ap9x-pci.h"
+#include "dev-eth.h"
+#include "dev-spi.h"
+#include "dev-gpio-buttons.h"
+#include "dev-leds-gpio.h"
+#include "dev-m25p80.h"
+//#include "dev-usb.h"
+#include "dev-wmac.h"
+#include "machtypes.h"
+#include "routerboot.h"
+
+#define RB941_GPIO_LED_ACT      14
+#define RB941_GPIO_BTN_RESET    16
+
+#define RB941_KEYS_POLL_INTERVAL 20 /* msecs */
+#define RB941_KEYS_DEBOUNCE_INTERVAL (3 * RB941_KEYS_POLL_INTERVAL)
+
+#define RB_ROUTERBOOT_OFFSET    0x0000
+#define RB_ROUTERBOOT_SIZE      0xe000
+#define RB_HARD_CFG_OFFSET      0xe000
+#define RB_HARD_CFG_SIZE        0x1000
+#define RB_BIOS_OFFSET          0xf000
+#define RB_BIOS_SIZE            0x1000
+#define RB_ROUTERBOOT2_OFFSET   0x10000
+#define RB_ROUTERBOOT2_SIZE     0xf000
+#define RB_SOFT_CFG_OFFSET      0x1f000
+#define RB_SOFT_CFG_SIZE        0x1000
+#define RB_ROOTFS_OFFSET        0x20000
+#define RB_ROOTFS_SIZE          0x9e0000
+#define RB_KERNEL_OFFSET        0xa00000
+#define RB_KERNEL_SIZE          MTDPART_SIZ_FULL
+
+void __init rb941_wlan_init(void)
+{
+    char *art_buf;
+    u8 wlan_mac[ETH_ALEN];
+
+    art_buf = rb_get_wlan_data();
+    if (art_buf == NULL)
+            return;
+
+    ath79_init_mac(wlan_mac, ath79_mac_base, 11);
+    ath79_register_wmac(art_buf + 0x1000, wlan_mac);
+
+    kfree(art_buf);
+}
+
+static struct mtd_partition rb941_spi_partitions[] = {
+    {
+            .name = "routerboot",
+            .offset = RB_ROUTERBOOT_OFFSET,
+            .mask_flags = MTD_WRITEABLE,
+            .size = RB_ROUTERBOOT_SIZE,
+    }, {
+            .name = "hard_config",
+            .offset = RB_HARD_CFG_OFFSET,
+            .size = RB_HARD_CFG_SIZE,
+            .mask_flags = MTD_WRITEABLE,
+    }, {
+            .name = "bios",
+            .offset = RB_BIOS_OFFSET,
+            .size = RB_BIOS_SIZE,
+            .mask_flags = MTD_WRITEABLE,
+    }, {
+            .name = "routerboot2",
+            .offset = RB_ROUTERBOOT2_OFFSET,
+            .size = RB_ROUTERBOOT2_SIZE,
+            .mask_flags = MTD_WRITEABLE,
+    }, {
+            .name = "soft_config",
+            .offset = RB_SOFT_CFG_OFFSET,
+            .size = RB_SOFT_CFG_SIZE,
+            .mask_flags = MTD_WRITEABLE,
+    }, {
+            .name = "rootfs",
+            .offset = RB_ROOTFS_OFFSET,
+            .size = RB_ROOTFS_SIZE,
+    }, {
+            .name = "kernel",
+            .offset = RB_KERNEL_OFFSET,
+            .size = RB_KERNEL_SIZE,
+    }
+};
+
+static struct flash_platform_data rb941_spi_flash_data = {
+    .parts          = rb941_spi_partitions,
+    .nr_parts       = ARRAY_SIZE(rb941_spi_partitions),
+};
+
+static struct gpio_led rb941_leds[] __initdata = {
+    {
+        .name = "rb:green:act",
+        .gpio = RB941_GPIO_LED_ACT,
+        .active_low = 1,
+    },
+};
+
+static struct gpio_keys_button rb941_gpio_keys[] __initdata = {
+    {
+        .desc = "Reset button",
+        .type = EV_KEY,
+        .code = KEY_RESTART,
+        .debounce_interval = RB941_KEYS_DEBOUNCE_INTERVAL,
+        .gpio = RB941_GPIO_BTN_RESET,
+        .active_low = 1,
+    },
+};
+
+static void __init rb941_setup(void)
+{
+    const struct rb_info *info;
+    //try to get rb_info data
+    info = rb_init_info((void *)(KSEG1ADDR(AR71XX_SPI_BASE)), 0x20000);
+    if (!info){
+        pr_err("%s: Can't get rb_info data from flash!\n", __func__);
+        //return -EINVAL; //Not critical ... continue!
+    }
+    ath79_setup_ar934x_eth_cfg(AR934X_ETH_CFG_SW_ONLY_MODE);
+    ath79_register_m25p80(&rb941_spi_flash_data);
+    ath79_register_mdio(0, 0x0);
+
+    /* WAN. We have no WAN. Only LAN. */
+    /*ath79_switch_data.phy4_mii_en = 1;
+    ath79_switch_data.phy_poll_mask = BIT(4);
+    ath79_eth0_data.phy_if_mode = PHY_INTERFACE_MODE_MII;
+    ath79_eth0_data.phy_mask = BIT(4);
+    ath79_init_mac(ath79_eth0_data.mac_addr, ath79_mac_base, 0);
+    ath79_register_eth(0); */
+
+    /* LAN */
+    ath79_init_mac(ath79_eth1_data.mac_addr, ath79_mac_base, 0);
+    ath79_eth1_data.phy_if_mode = PHY_INTERFACE_MODE_GMII;
+    ath79_register_eth(1);
+
+    //ath79_register_usb();
+
+    rb941_wlan_init();
+
+    ath79_register_leds_gpio(-1, ARRAY_SIZE(rb941_leds), rb941_leds);
+    ath79_register_gpio_keys_polled(-1, RB941_KEYS_POLL_INTERVAL,
+                                    ARRAY_SIZE(rb941_gpio_keys),
+                                    rb941_gpio_keys);
+}
+
+MIPS_MACHINE(ATH79_MACH_RB_941, "H951L", "MikroTik RouterBOARD 941-2nD", rb941_setup);