arch/arm/mach-omap2/boot-common.c

   1 /*
   2  * boot-common.c
   3  *
   4  * Common bootmode functions for omap based boards
   5  *
   6  * Copyright (C) 2011, Texas Instruments, Incorporated - http://www.ti.com/
   7  *
   8  * SPDX-License-Identifier:     GPL-2.0+
   9  */
  10
  11 #include <common.h>
  12 #include <ahci.h>
  13 #include <spl.h>
  14 #include <asm/omap_common.h>
  15 #include <asm/arch/omap.h>
  16 #include <asm/arch/mmc_host_def.h>
  17 #include <asm/arch/sys_proto.h>
  18 #include <watchdog.h>
  19 #include <scsi.h>
  20 #include <i2c.h>
  21
  22 DECLARE_GLOBAL_DATA_PTR;
  23
  24 __weak u32 omap_sys_boot_device(void)
  25 {
  26         return BOOT_DEVICE_NONE;
  27 }
  28
  29 void save_omap_boot_params(void)
  30 {
  31         u32 boot_params = *((u32 *)OMAP_SRAM_SCRATCH_BOOT_PARAMS);
  32         struct omap_boot_parameters *omap_boot_params;
  33         int sys_boot_device = 0;
  34         u32 boot_device;
  35         u32 boot_mode;
  36
  37         if ((boot_params < NON_SECURE_SRAM_START) ||
  38             (boot_params > NON_SECURE_SRAM_END))
  39                 return;
  40
  41         omap_boot_params = (struct omap_boot_parameters *)boot_params;
  42
  43         boot_device = omap_boot_params->boot_device;
  44         boot_mode = MMCSD_MODE_UNDEFINED;
  45
  46         /* Boot device */
  47
  48 #ifdef BOOT_DEVICE_NAND_I2C
  49         /*
  50          * Re-map NAND&I2C boot-device to the "normal" NAND boot-device.
  51          * Otherwise the SPL boot IF can't handle this device correctly.
  52          * Somehow booting with Hynix 4GBit NAND H27U4G8 on Siemens
  53          * Draco leads to this boot-device passed to SPL from the BootROM.
  54          */
  55         if (boot_device == BOOT_DEVICE_NAND_I2C)
  56                 boot_device = BOOT_DEVICE_NAND;
  57 #endif
  58 #ifdef BOOT_DEVICE_QSPI_4
  59         /*
  60          * We get different values for QSPI_1 and QSPI_4 being used, but
  61          * don't actually care about this difference.  Rather than
  62          * mangle the later code, if we're coming in as QSPI_4 just
  63          * change to the QSPI_1 value.
  64          */
  65         if (boot_device == BOOT_DEVICE_QSPI_4)
  66                 boot_device = BOOT_DEVICE_SPI;
  67 #endif
  68         /*
  69          * When booting from peripheral booting, the boot device is not usable
  70          * as-is (unless there is support for it), so the boot device is instead
  71          * figured out using the SYS_BOOT pins.
  72          */
  73         switch (boot_device) {
  74 #if defined(BOOT_DEVICE_UART) && !defined(CONFIG_SPL_YMODEM_SUPPORT)
  75                 case BOOT_DEVICE_UART:
  76                         sys_boot_device = 1;
  77                         break;
  78 #endif
  79 #if defined(BOOT_DEVICE_USB) && !defined(CONFIG_SPL_USB_SUPPORT)
  80                 case BOOT_DEVICE_USB:
  81                         sys_boot_device = 1;
  82                         break;
  83 #endif
  84 #if defined(BOOT_DEVICE_USBETH) && !defined(CONFIG_SPL_USBETH_SUPPORT)
  85                 case BOOT_DEVICE_USBETH:
  86                         sys_boot_device = 1;
  87                         break;
  88 #endif
  89 #if defined(BOOT_DEVICE_CPGMAC) && !defined(CONFIG_SPL_ETH_SUPPORT)
  90                 case BOOT_DEVICE_CPGMAC:
  91                         sys_boot_device = 1;
  92                         break;
  93 #endif
  94 #if defined(BOOT_DEVICE_DFU) && !defined(CONFIG_SPL_DFU_SUPPORT)
  95                 case BOOT_DEVICE_DFU:
  96                         sys_boot_device = 1;
  97                         break;
  98 #endif
  99         }
 100
 101         if (sys_boot_device) {
 102                 boot_device = omap_sys_boot_device();
 103
 104                 /* MMC raw mode will fallback to FS mode. */
 105                 if ((boot_device >= MMC_BOOT_DEVICES_START) &&
 106                     (boot_device <= MMC_BOOT_DEVICES_END))
 107                         boot_mode = MMCSD_MODE_RAW;
 108         }
 109
 110         gd->arch.omap_boot_device = boot_device;
 111
 112         /* Boot mode */
 113
 114 #ifdef CONFIG_OMAP34XX
 115         if ((boot_device >= MMC_BOOT_DEVICES_START) &&
 116             (boot_device <= MMC_BOOT_DEVICES_END)) {
 117                 switch (boot_device) {
 118                 case BOOT_DEVICE_MMC1:
 119                         boot_mode = MMCSD_MODE_FS;
 120                         break;
 121                 case BOOT_DEVICE_MMC2:
 122                         boot_mode = MMCSD_MODE_RAW;
 123                         break;
 124                 }
 125         }
 126 #else
 127         /*
 128          * If the boot device was dynamically changed and doesn't match what
 129          * the bootrom initially booted, we cannot use the boot device
 130          * descriptor to figure out the boot mode.
 131          */
 132         if ((boot_device == omap_boot_params->boot_device) &&
 133             (boot_device >= MMC_BOOT_DEVICES_START) &&
 134             (boot_device <= MMC_BOOT_DEVICES_END)) {
 135                 boot_params = omap_boot_params->boot_device_descriptor;
 136                 if ((boot_params < NON_SECURE_SRAM_START) ||
 137                     (boot_params > NON_SECURE_SRAM_END))
 138                         return;
 139
 140                 boot_params = *((u32 *)(boot_params + DEVICE_DATA_OFFSET));
 141                 if ((boot_params < NON_SECURE_SRAM_START) ||
 142                     (boot_params > NON_SECURE_SRAM_END))
 143                         return;
 144
 145                 boot_mode = *((u32 *)(boot_params + BOOT_MODE_OFFSET));
 146
 147                 if (boot_mode != MMCSD_MODE_FS &&
 148                     boot_mode != MMCSD_MODE_RAW)
 149 #ifdef CONFIG_SUPPORT_EMMC_BOOT
 150                         boot_mode = MMCSD_MODE_EMMCBOOT;
 151 #else
 152                         boot_mode = MMCSD_MODE_UNDEFINED;
 153 #endif
 154         }
 155 #endif
 156
 157         gd->arch.omap_boot_mode = boot_mode;
 158
 159 #if !defined(CONFIG_TI814X) && !defined(CONFIG_TI816X) && \
 160     !defined(CONFIG_AM33XX) && !defined(CONFIG_AM43XX)
 161
 162         /* CH flags */
 163
 164         gd->arch.omap_ch_flags = omap_boot_params->ch_flags;
 165 #endif
 166 }
 167
 168 #ifdef CONFIG_SPL_BUILD
 169 u32 spl_boot_device(void)
 170 {
 171         return gd->arch.omap_boot_device;
 172 }
 173
 174 u32 spl_boot_mode(const u32 boot_device)
 175 {
 176         return gd->arch.omap_boot_mode;
 177 }
 178
 179 void spl_board_init(void)
 180 {
 181         /*
 182          * Save the boot parameters passed from romcode.
 183          * We cannot delay the saving further than this,
 184          * to prevent overwrites.
 185          */
 186         save_omap_boot_params();
 187
 188         /* Prepare console output */
 189         preloader_console_init();
 190
 191 #if defined(CONFIG_SPL_NAND_SUPPORT) || defined(CONFIG_SPL_ONENAND_SUPPORT)
 192         gpmc_init();
 193 #endif
 194 #ifdef CONFIG_SPL_I2C_SUPPORT
 195         i2c_init(CONFIG_SYS_OMAP24_I2C_SPEED, CONFIG_SYS_OMAP24_I2C_SLAVE);
 196 #endif
 197 #if defined(CONFIG_AM33XX) && defined(CONFIG_SPL_MUSB_NEW_SUPPORT)
 198         arch_misc_init();
 199 #endif
 200 #if defined(CONFIG_HW_WATCHDOG)
 201         hw_watchdog_init();
 202 #endif
 203 #ifdef CONFIG_AM33XX
 204         am33xx_spl_board_init();
 205 #endif
 206 }
 207
 208 void __noreturn jump_to_image_no_args(struct spl_image_info *spl_image)
 209 {
 210         typedef void __noreturn (*image_entry_noargs_t)(u32 *);
 211         image_entry_noargs_t image_entry =
 212                         (image_entry_noargs_t) spl_image->entry_point;
 213
 214         u32 boot_params = *((u32 *)OMAP_SRAM_SCRATCH_BOOT_PARAMS);
 215
 216         debug("image entry point: 0x%lX\n", spl_image->entry_point);
 217         /* Pass the saved boot_params from rom code */
 218         image_entry((u32 *)boot_params);
 219 }
 220 #endif
 221
 222 #ifdef CONFIG_SCSI_AHCI_PLAT
 223 void arch_preboot_os(void)
 224 {
 225         ahci_reset((void __iomem *)DWC_AHSATA_BASE);
 226 }
 227 #endif
 228
 229 #if defined(CONFIG_USB_FUNCTION_FASTBOOT) && !defined(CONFIG_ENV_IS_NOWHERE)
 230 int fb_set_reboot_flag(void)
 231 {
 232         printf("Setting reboot to fastboot flag ...\n");
 233         setenv("dofastboot", "1");
 234         saveenv();
 235         return 0;
 236 }
 237 #endif