Merge branch 'master' of https://gitlab.denx.de/u-boot/custodians/u-boot-sunxi

[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 832df0a0049c3b4bf1fb3be204b5baa49ae96aae..a99bf166fd85109ce14edd53440bfcf323cf61f3 100644 (file)
--- a/arch/arm/mach-mvebu/spl.c
+++ b/arch/arm/mach-mvebu/spl.c
@@ -1,36 +1,80 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
- * Copyright (C) 2014-2015 Stefan Roese <sr@denx.de>
- *
- * SPDX-License-Identifier:    GPL-2.0+
+ * Copyright (C) 2014-2016 Stefan Roese <sr@denx.de>
  */
 
 #include <common.h>
 #include <dm.h>
 #include <debug_uart.h>
 #include <fdtdec.h>
+#include <hang.h>
 #include <spl.h>
 #include <asm/io.h>
 #include <asm/arch/cpu.h>
 #include <asm/arch/soc.h>
 
-DECLARE_GLOBAL_DATA_PTR;
-
-u32 spl_boot_device(void)
+static u32 get_boot_device(void)
 {
-#if defined(CONFIG_SPL_SPI_FLASH_SUPPORT)
-       return BOOT_DEVICE_SPI;
+       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
-#if defined(CONFIG_SPL_MMC_SUPPORT)
-       return BOOT_DEVICE_MMC1;
+               return BOOT_DEVICE_UART;
+#ifdef BOOT_FROM_SATA
+       case BOOT_FROM_SATA:
+       case BOOT_FROM_SATA_ALT:
+               return BOOT_DEVICE_SATA;
 #endif
+       case BOOT_FROM_SPI:
+       default:
+               return BOOT_DEVICE_SPI;
+       };
 }
 
-#ifdef CONFIG_SPL_MMC_SUPPORT
-u32 spl_boot_mode(void)
+u32 spl_boot_device(void)
 {
-       return MMCSD_MODE_RAW;
+       return get_boot_device();
 }
-#endif
 
 void board_init_f(ulong dummy)
 {
@@ -55,26 +99,37 @@ void board_init_f(ulong dummy)
         */
 #endif
 
+       /*
+        * Use special translation offset for SPL. This needs to be
+        * configured *before* spl_init() is called as this function
+        * calls dm_init() which calls the bind functions of the
+        * device drivers. Here the base address needs to be configured
+        * (translated) correctly.
+        */
+       gd->translation_offset = 0xd0000000 - 0xf1000000;
+
        ret = spl_init();
        if (ret) {
                debug("spl_init() failed: %d\n", ret);
                hang();
        }
 
-       /* Use special translation offset for SPL */
-       dm_set_translation_offset(0xd0000000 - 0xf1000000);
-
        preloader_console_init();
 
        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
+
+       /* Initialize Auto Voltage Scaling */
+       mv_avs_init();
 
-#ifdef CONFIG_MVEBU_BOOTROM_UARTBOOT
        /*
         * Return to the BootROM to continue the Marvell xmodem
         * UART boot protocol. As initiated by the kwboot tool.
@@ -85,7 +140,15 @@ 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();
+       }
 }