USB: DM: Convert i.MX5 ehci code to driver model

[oweals/u-boot.git] / arch / arm / mach-mvebu / spl.c

diff --git a/arch/arm/mach-mvebu/spl.c b/arch/arm/mach-mvebu/spl.c
index 778996eff54b78e3f2d85325a7a91246b46e0649..9dd7c84b6874d6ba09729279a2227276463e3c9a 100644 (file)
--- a/arch/arm/mach-mvebu/spl.c
+++ b/arch/arm/mach-mvebu/spl.c
@@ -1,7 +1,6 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
  * Copyright (C) 2014-2016 Stefan Roese <sr@denx.de>
- *
- * SPDX-License-Identifier:    GPL-2.0+
  */
 
 #include <common.h>
@@ -13,22 +12,52 @@
 #include <asm/arch/cpu.h>
 #include <asm/arch/soc.h>
 
-DECLARE_GLOBAL_DATA_PTR;
-
 static u32 get_boot_device(void)
 {
        u32 val;
        u32 boot_device;
 
+       /*
+        * First check, if UART boot-mode is active. This can only
+        * be done, via the bootrom error register. Here the
+        * MSB marks if the UART mode is active.
+        */
+       val = readl(CONFIG_BOOTROM_ERR_REG);
+       boot_device = (val & BOOTROM_ERR_MODE_MASK) >> BOOTROM_ERR_MODE_OFFS;
+       debug("BOOTROM_REG=0x%08x boot_device=0x%x\n", val, boot_device);
+       if (boot_device == BOOTROM_ERR_MODE_UART)
+               return BOOT_DEVICE_UART;
+
+#ifdef CONFIG_ARMADA_38X
+       /*
+        * If the bootrom error code contains any other than zeros it's an
+        * error condition and the bootROM has fallen back to UART boot
+        */
+       boot_device = (val & BOOTROM_ERR_CODE_MASK) >> BOOTROM_ERR_CODE_OFFS;
+       if (boot_device)
+               return BOOT_DEVICE_UART;
+#endif
+
+       /*
+        * Now check the SAR register for the strapped boot-device
+        */
        val = readl(CONFIG_SAR_REG);    /* SAR - Sample At Reset */
        boot_device = (val & BOOT_DEV_SEL_MASK) >> BOOT_DEV_SEL_OFFS;
+       debug("SAR_REG=0x%08x boot_device=0x%x\n", val, boot_device);
        switch (boot_device) {
+#if defined(CONFIG_ARMADA_38X)
+       case BOOT_FROM_NAND:
+               return BOOT_DEVICE_NAND;
+#endif
 #ifdef CONFIG_SPL_MMC_SUPPORT
        case BOOT_FROM_MMC:
        case BOOT_FROM_MMC_ALT:
                return BOOT_DEVICE_MMC1;
 #endif
        case BOOT_FROM_UART:
+#ifdef BOOT_FROM_UART_ALT
+       case BOOT_FROM_UART_ALT:
+#endif
                return BOOT_DEVICE_UART;
        case BOOT_FROM_SPI:
        default:
@@ -41,13 +70,6 @@ u32 spl_boot_device(void)
        return get_boot_device();
 }
 
-#ifdef CONFIG_SPL_MMC_SUPPORT
-u32 spl_boot_mode(void)
-{
-       return MMCSD_MODE_RAW;
-}
-#endif
-
 void board_init_f(ulong dummy)
 {
        int ret;
@@ -84,13 +106,15 @@ void board_init_f(ulong dummy)
 
        timer_init();
 
+       /* Armada 375 does not support SerDes and DDR3 init yet */
+#if !defined(CONFIG_ARMADA_375)
        /* First init the serdes PHY's */
        serdes_phy_config();
 
        /* Setup DDR */
        ddr3_init();
+#endif
 
-#ifdef CONFIG_MVEBU_BOOTROM_UARTBOOT
        /*
         * Return to the BootROM to continue the Marvell xmodem
         * UART boot protocol. As initiated by the kwboot tool.
@@ -101,7 +125,15 @@ void board_init_f(ulong dummy)
         * SPL has no chance to receive this information. So we
         * need to return to the BootROM to enable this xmodem
         * UART download.
+        *
+        * If booting from NAND lets let the BootROM load the
+        * rest of the bootloader.
         */
-       return_to_bootrom();
+       switch (get_boot_device()) {
+               case BOOT_DEVICE_UART:
+#if defined(CONFIG_ARMADA_38X)
+               case BOOT_DEVICE_NAND:
 #endif
+                       return_to_bootrom();
+       }
 }