upstream u-boot with additional patches for our devices/boards:
https://lists.denx.de/pipermail/u-boot/2017-March/282789.html (AXP crashes) ;
Gbit ethernet patch for some LIME2 revisions ;
with SPI flash support
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256 lines
5.5 KiB
256 lines
5.5 KiB
/*
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* Copyright (C) 2004-2006 Atmel Corporation
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <common.h>
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#include <command.h>
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#include <malloc.h>
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#include <stdio_dev.h>
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#include <version.h>
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#include <net.h>
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#ifdef CONFIG_BITBANGMII
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#include <miiphy.h>
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#endif
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#include <asm/sections.h>
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#include <asm/arch/mmu.h>
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#include <asm/arch/hardware.h>
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#ifndef CONFIG_IDENT_STRING
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#define CONFIG_IDENT_STRING ""
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#endif
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#ifdef CONFIG_GENERIC_ATMEL_MCI
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#include <mmc.h>
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#endif
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DECLARE_GLOBAL_DATA_PTR;
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unsigned long monitor_flash_len;
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__weak void dram_init_banksize(void)
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{
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gd->bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE;
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gd->bd->bi_dram[0].size = gd->ram_size;
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}
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/* Weak aliases for optional board functions */
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static int __do_nothing(void)
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{
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return 0;
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}
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int board_postclk_init(void) __attribute__((weak, alias("__do_nothing")));
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int board_early_init_r(void) __attribute__((weak, alias("__do_nothing")));
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static int init_baudrate(void)
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{
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gd->baudrate = getenv_ulong("baudrate", 10, CONFIG_BAUDRATE);
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return 0;
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}
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static int display_banner (void)
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{
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printf ("\n\n%s\n\n", version_string);
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printf ("U-Boot code: %08lx -> %08lx data: %08lx -> %08lx\n",
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(unsigned long)_text, (unsigned long)_etext,
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(unsigned long)_data, (unsigned long)(&__bss_end));
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return 0;
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}
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static int display_dram_config (void)
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{
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int i;
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puts ("DRAM Configuration:\n");
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for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
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printf ("Bank #%d: %08lx ", i, gd->bd->bi_dram[i].start);
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print_size (gd->bd->bi_dram[i].size, "\n");
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}
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return 0;
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}
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static void display_flash_config (void)
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{
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puts ("Flash: ");
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print_size(gd->bd->bi_flashsize, " ");
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printf("at address 0x%08lx\n", gd->bd->bi_flashstart);
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}
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void board_init_f(ulong board_type)
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{
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gd_t gd_data;
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gd_t *new_gd;
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bd_t *bd;
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unsigned long *new_sp;
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unsigned long monitor_len;
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unsigned long monitor_addr;
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unsigned long addr;
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/* Initialize the global data pointer */
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memset(&gd_data, 0, sizeof(gd_data));
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gd = &gd_data;
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/* Perform initialization sequence */
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board_early_init_f();
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arch_cpu_init();
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board_postclk_init();
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env_init();
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init_baudrate();
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serial_init();
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console_init_f();
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display_banner();
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dram_init();
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/* If we have no SDRAM, we can't go on */
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if (gd->ram_size <= 0)
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panic("No working SDRAM available\n");
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/*
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* Now that we have DRAM mapped and working, we can
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* relocate the code and continue running from DRAM.
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*
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* Reserve memory at end of RAM for (top down in that order):
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* - u-boot image
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* - heap for malloc()
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* - board info struct
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* - global data struct
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* - stack
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*/
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addr = CONFIG_SYS_SDRAM_BASE + gd->ram_size;
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monitor_len = (char *)(&__bss_end) - _text;
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/*
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* Reserve memory for u-boot code, data and bss.
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* Round down to next 4 kB limit.
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*/
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addr -= monitor_len;
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addr &= ~(4096UL - 1);
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monitor_addr = addr;
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/* Reserve memory for malloc() */
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addr -= CONFIG_SYS_MALLOC_LEN;
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#ifdef CONFIG_LCD
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#ifdef CONFIG_FB_ADDR
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printf("LCD: Frame buffer allocated at preset 0x%08x\n",
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CONFIG_FB_ADDR);
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gd->fb_base = CONFIG_FB_ADDR;
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#else
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addr = lcd_setmem(addr);
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printf("LCD: Frame buffer allocated at 0x%08lx\n", addr);
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gd->fb_base = addr;
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#endif /* CONFIG_FB_ADDR */
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#endif /* CONFIG_LCD */
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/* Allocate a Board Info struct on a word boundary */
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addr -= sizeof(bd_t);
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addr &= ~3UL;
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gd->bd = bd = (bd_t *)addr;
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/* Allocate a new global data copy on a 8-byte boundary. */
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addr -= sizeof(gd_t);
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addr &= ~7UL;
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new_gd = (gd_t *)addr;
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/* And finally, a new, bigger stack. */
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new_sp = (unsigned long *)addr;
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gd->start_addr_sp = addr;
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*(--new_sp) = 0;
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*(--new_sp) = 0;
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dram_init_banksize();
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memcpy(new_gd, gd, sizeof(gd_t));
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relocate_code((unsigned long)new_sp, new_gd, monitor_addr);
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}
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void board_init_r(gd_t *new_gd, ulong dest_addr)
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{
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#ifndef CONFIG_ENV_IS_NOWHERE
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extern char * env_name_spec;
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#endif
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bd_t *bd;
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gd = new_gd;
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bd = gd->bd;
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gd->flags |= GD_FLG_RELOC;
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gd->reloc_off = dest_addr - CONFIG_SYS_MONITOR_BASE;
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/* Enable the MMU so that we can keep u-boot simple */
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mmu_init_r(dest_addr);
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board_early_init_r();
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monitor_flash_len = _edata - _text;
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#if defined(CONFIG_NEEDS_MANUAL_RELOC)
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/*
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* We have to relocate the command table manually
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*/
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fixup_cmdtable(ll_entry_start(cmd_tbl_t, cmd),
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ll_entry_count(cmd_tbl_t, cmd));
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#endif /* defined(CONFIG_NEEDS_MANUAL_RELOC) */
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/* there are some other pointer constants we must deal with */
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#ifndef CONFIG_ENV_IS_NOWHERE
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env_name_spec += gd->reloc_off;
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#endif
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timer_init();
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/* The malloc area is right below the monitor image in RAM */
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mem_malloc_init(CONFIG_SYS_MONITOR_BASE + gd->reloc_off -
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CONFIG_SYS_MALLOC_LEN, CONFIG_SYS_MALLOC_LEN);
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enable_interrupts();
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bd->bi_flashstart = 0;
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bd->bi_flashsize = 0;
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bd->bi_flashoffset = 0;
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#ifndef CONFIG_SYS_NO_FLASH
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bd->bi_flashstart = CONFIG_SYS_FLASH_BASE;
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bd->bi_flashsize = flash_init();
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bd->bi_flashoffset = (unsigned long)_edata - (unsigned long)_text;
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if (bd->bi_flashsize)
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display_flash_config();
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#endif
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if (bd->bi_dram[0].size)
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display_dram_config();
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gd->bd->bi_boot_params = malloc(CONFIG_SYS_BOOTPARAMS_LEN);
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if (!gd->bd->bi_boot_params)
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puts("WARNING: Cannot allocate space for boot parameters\n");
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/* initialize environment */
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env_relocate();
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stdio_init();
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jumptable_init();
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console_init_r();
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/* Initialize from environment */
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load_addr = getenv_ulong("loadaddr", 16, load_addr);
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#ifdef CONFIG_BITBANGMII
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bb_miiphy_init();
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#endif
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#if defined(CONFIG_CMD_NET)
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puts("Net: ");
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eth_initialize();
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#endif
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#ifdef CONFIG_GENERIC_ATMEL_MCI
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mmc_initialize(gd->bd);
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#endif
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for (;;) {
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main_loop();
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}
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}
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