#include <common.h>
#include <command.h>
#include <malloc.h>
-#include <devices.h>
+#include <stdio_dev.h>
+#include <timestamp.h>
#include <version.h>
#include <net.h>
DECLARE_GLOBAL_DATA_PTR;
const char version_string[] =
- U_BOOT_VERSION " (" __DATE__ " - " __TIME__ ") " CONFIG_IDENT_STRING;
+ U_BOOT_VERSION " ("U_BOOT_DATE" - "U_BOOT_TIME") " CONFIG_IDENT_STRING;
unsigned long monitor_flash_len;
static unsigned long mem_malloc_end = 0;
static unsigned long mem_malloc_brk = 0;
-/* The malloc area is wherever the board wants it to be */
+/* Weak aliases for optional board functions */
+static int __do_nothing(void)
+{
+ return 0;
+}
+int board_postclk_init(void) __attribute__((weak, alias("__do_nothing")));
+int board_early_init_r(void) __attribute__((weak, alias("__do_nothing")));
+
+/* The malloc area is right below the monitor image in RAM */
static void mem_malloc_init(void)
{
- mem_malloc_start = CFG_MALLOC_START;
- mem_malloc_end = CFG_MALLOC_END;
+ unsigned long monitor_addr;
+
+ monitor_addr = CONFIG_SYS_MONITOR_BASE + gd->reloc_off;
+ mem_malloc_end = monitor_addr;
+ mem_malloc_start = mem_malloc_end - CONFIG_SYS_MALLOC_LEN;
mem_malloc_brk = mem_malloc_start;
printf("malloc: Using memory from 0x%08lx to 0x%08lx\n",
return ((void *)old);
}
+#ifdef CONFIG_SYS_DMA_ALLOC_LEN
+#include <asm/arch/cacheflush.h>
+#include <asm/io.h>
+
+static unsigned long dma_alloc_start;
+static unsigned long dma_alloc_end;
+static unsigned long dma_alloc_brk;
+
+static void dma_alloc_init(void)
+{
+ unsigned long monitor_addr;
+
+ monitor_addr = CONFIG_SYS_MONITOR_BASE + gd->reloc_off;
+ dma_alloc_end = monitor_addr - CONFIG_SYS_MALLOC_LEN;
+ dma_alloc_start = dma_alloc_end - CONFIG_SYS_DMA_ALLOC_LEN;
+ dma_alloc_brk = dma_alloc_start;
+
+ printf("DMA: Using memory from 0x%08lx to 0x%08lx\n",
+ dma_alloc_start, dma_alloc_end);
+
+ dcache_invalidate_range(cached(dma_alloc_start),
+ dma_alloc_end - dma_alloc_start);
+}
+
+void *dma_alloc_coherent(size_t len, unsigned long *handle)
+{
+ unsigned long paddr = dma_alloc_brk;
+
+ if (dma_alloc_brk + len > dma_alloc_end)
+ return NULL;
+
+ dma_alloc_brk = ((paddr + len + CONFIG_SYS_DCACHE_LINESZ - 1)
+ & ~(CONFIG_SYS_DCACHE_LINESZ - 1));
+
+ *handle = paddr;
+ return uncached(paddr);
+}
+#else
+static inline void dma_alloc_init(void)
+{
+
+}
+#endif
+
static int init_baudrate(void)
{
char tmp[64];
printf("at address 0x%08lx\n", gd->bd->bi_flashstart);
}
-void start_u_boot (void)
+void board_init_f(ulong board_type)
{
gd_t gd_data;
+ gd_t *new_gd;
+ bd_t *bd;
+ unsigned long *new_sp;
+ unsigned long monitor_len;
+ unsigned long monitor_addr;
+ unsigned long addr;
+ long sdram_size;
/* Initialize the global data pointer */
memset(&gd_data, 0, sizeof(gd_data));
gd = &gd_data;
- monitor_flash_len = _edata - _text;
-
/* Perform initialization sequence */
+ board_early_init_f();
cpu_init();
- timer_init();
+ board_postclk_init();
env_init();
init_baudrate();
serial_init();
console_init_f();
display_banner();
+ sdram_size = initdram(board_type);
+
+ /* If we have no SDRAM, we can't go on */
+ if (sdram_size <= 0)
+ panic("No working SDRAM available\n");
+
+ /*
+ * Now that we have DRAM mapped and working, we can
+ * relocate the code and continue running from DRAM.
+ *
+ * Reserve memory at end of RAM for (top down in that order):
+ * - u-boot image
+ * - heap for malloc()
+ * - board info struct
+ * - global data struct
+ * - stack
+ */
+ addr = CONFIG_SYS_SDRAM_BASE + sdram_size;
+ monitor_len = _end - _text;
+
+ /*
+ * Reserve memory for u-boot code, data and bss.
+ * Round down to next 4 kB limit.
+ */
+ addr -= monitor_len;
+ addr &= ~(4096UL - 1);
+ monitor_addr = addr;
+
+ /* Reserve memory for malloc() */
+ addr -= CONFIG_SYS_MALLOC_LEN;
+
+#ifdef CONFIG_SYS_DMA_ALLOC_LEN
+ /* Reserve DMA memory (must be cache aligned) */
+ addr &= ~(CONFIG_SYS_DCACHE_LINESZ - 1);
+ addr -= CONFIG_SYS_DMA_ALLOC_LEN;
+#endif
+
+#ifdef CONFIG_LCD
+#ifdef CONFIG_FB_ADDR
+ printf("LCD: Frame buffer allocated at preset 0x%08x\n",
+ CONFIG_FB_ADDR);
+ gd->fb_base = (void *)CONFIG_FB_ADDR;
+#else
+ addr = lcd_setmem(addr);
+ printf("LCD: Frame buffer allocated at 0x%08lx\n", addr);
+ gd->fb_base = (void *)addr;
+#endif /* CONFIG_FB_ADDR */
+#endif /* CONFIG_LCD */
+
+ /* Allocate a Board Info struct on a word boundary */
+ addr -= sizeof(bd_t);
+ addr &= ~3UL;
+ gd->bd = bd = (bd_t *)addr;
+
+ /* Allocate a new global data copy on a 8-byte boundary. */
+ addr -= sizeof(gd_t);
+ addr &= ~7UL;
+ new_gd = (gd_t *)addr;
+
+ /* And finally, a new, bigger stack. */
+ new_sp = (unsigned long *)addr;
+ gd->stack_end = addr;
+ *(--new_sp) = 0;
+ *(--new_sp) = 0;
+
+ /*
+ * Initialize the board information struct with the
+ * information we have.
+ */
+ bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE;
+ bd->bi_dram[0].size = sdram_size;
+ bd->bi_baudrate = gd->baudrate;
+
+ memcpy(new_gd, gd, sizeof(gd_t));
+
+ relocate_code((unsigned long)new_sp, new_gd, monitor_addr);
+}
+
+void board_init_r(gd_t *new_gd, ulong dest_addr)
+{
+ extern void malloc_bin_reloc (void);
+#ifndef CONFIG_ENV_IS_NOWHERE
+ extern char * env_name_spec;
+#endif
+ char *s;
+ cmd_tbl_t *cmdtp;
+ bd_t *bd;
+
+ gd = new_gd;
+ bd = gd->bd;
+
+ gd->flags |= GD_FLG_RELOC;
+ gd->reloc_off = dest_addr - CONFIG_SYS_MONITOR_BASE;
+
+ board_early_init_r();
+
+ monitor_flash_len = _edata - _text;
+
+ /*
+ * We have to relocate the command table manually
+ */
+ for (cmdtp = &__u_boot_cmd_start;
+ cmdtp != &__u_boot_cmd_end; cmdtp++) {
+ unsigned long addr;
+
+ addr = (unsigned long)cmdtp->cmd + gd->reloc_off;
+ cmdtp->cmd = (typeof(cmdtp->cmd))addr;
+
+ addr = (unsigned long)cmdtp->name + gd->reloc_off;
+ cmdtp->name = (typeof(cmdtp->name))addr;
+
+ if (cmdtp->usage) {
+ addr = (unsigned long)cmdtp->usage + gd->reloc_off;
+ cmdtp->usage = (typeof(cmdtp->usage))addr;
+ }
+#ifdef CONFIG_SYS_LONGHELP
+ if (cmdtp->help) {
+ addr = (unsigned long)cmdtp->help + gd->reloc_off;
+ cmdtp->help = (typeof(cmdtp->help))addr;
+ }
+#endif
+ }
+
+ /* there are some other pointer constants we must deal with */
+#ifndef CONFIG_ENV_IS_NOWHERE
+ env_name_spec += gd->reloc_off;
+#endif
- board_init_memories();
+ timer_init();
mem_malloc_init();
+ malloc_bin_reloc();
+ dma_alloc_init();
+
+ enable_interrupts();
- gd->bd = malloc(sizeof(bd_t));
- memset(gd->bd, 0, sizeof(bd_t));
- gd->bd->bi_baudrate = gd->baudrate;
- gd->bd->bi_dram[0].start = CFG_SDRAM_BASE;
- gd->bd->bi_dram[0].size = gd->sdram_size;
+ bd->bi_flashstart = 0;
+ bd->bi_flashsize = 0;
+ bd->bi_flashoffset = 0;
- board_init_info();
- flash_init();
+#ifndef CONFIG_SYS_NO_FLASH
+ bd->bi_flashstart = CONFIG_SYS_FLASH_BASE;
+ bd->bi_flashsize = flash_init();
+ bd->bi_flashoffset = (unsigned long)_edata - (unsigned long)_text;
- if (gd->bd->bi_flashsize)
+ if (bd->bi_flashsize)
display_flash_config();
- if (gd->bd->bi_dram[0].size)
+#endif
+
+ if (bd->bi_dram[0].size)
display_dram_config();
- gd->bd->bi_boot_params = malloc(CFG_BOOTPARAMS_LEN);
+ gd->bd->bi_boot_params = malloc(CONFIG_SYS_BOOTPARAMS_LEN);
if (!gd->bd->bi_boot_params)
puts("WARNING: Cannot allocate space for boot parameters\n");
/* initialize environment */
env_relocate();
- devices_init();
+ bd->bi_ip_addr = getenv_IPaddr ("ipaddr");
+
+ stdio_init();
jumptable_init();
console_init_r();
+ s = getenv("loadaddr");
+ if (s)
+ load_addr = simple_strtoul(s, NULL, 16);
+
+#if defined(CONFIG_CMD_NET)
+ s = getenv("bootfile");
+ if (s)
+ copy_filename(BootFile, s, sizeof(BootFile));
+#if defined(CONFIG_NET_MULTI)
+ puts("Net: ");
+#endif
+ eth_initialize(gd->bd);
+#endif
+
for (;;) {
main_loop();
}
projects / karo-tx-uboot.git / blobdiff