diff options
Diffstat (limited to 'lib_avr32')
| -rw-r--r-- | lib_avr32/avr32_linux.c | 4 | ||||
| -rw-r--r-- | lib_avr32/board.c | 198 |
2 files changed, 184 insertions, 18 deletions
diff --git a/lib_avr32/avr32_linux.c b/lib_avr32/avr32_linux.c index d128dfb..6095e2f 100644 --- a/lib_avr32/avr32_linux.c +++ b/lib_avr32/avr32_linux.c @@ -27,7 +27,7 @@ #include <asm/addrspace.h> #include <asm/io.h> #include <asm/setup.h> -#include <asm/arch/platform.h> +#include <asm/arch/clk.h> DECLARE_GLOBAL_DATA_PTR; @@ -133,7 +133,7 @@ static struct tag *setup_clock_tags(struct tag *params) params->hdr.size = tag_size(tag_clock); params->u.clock.clock_id = ACLOCK_HSB; params->u.clock.clock_flags = 0; - params->u.clock.clock_hz = pm_get_clock_freq(CLOCK_HSB); + params->u.clock.clock_hz = get_hsb_clk_rate(); #endif return tag_next(params); diff --git a/lib_avr32/board.c b/lib_avr32/board.c index 02c106b..265328a 100644 --- a/lib_avr32/board.c +++ b/lib_avr32/board.c @@ -47,11 +47,14 @@ static unsigned long mem_malloc_start = 0; 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 */ +/* 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 = CFG_MONITOR_BASE + gd->reloc_off; + mem_malloc_end = monitor_addr; + mem_malloc_start = mem_malloc_end - CFG_MALLOC_LEN; mem_malloc_brk = mem_malloc_start; printf("malloc: Using memory from 0x%08lx to 0x%08lx\n", @@ -73,6 +76,50 @@ void *sbrk(ptrdiff_t increment) return ((void *)old); } +#ifdef CFG_DMA_ALLOC_LEN +#include <asm/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 = CFG_MONITOR_BASE + gd->reloc_off; + dma_alloc_end = monitor_addr - CFG_MALLOC_LEN; + dma_alloc_start = dma_alloc_end - CFG_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 + CFG_DCACHE_LINESZ - 1) + & ~(CFG_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]; @@ -122,40 +169,152 @@ static void display_flash_config (void) 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(); 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 = CFG_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 -= CFG_MALLOC_LEN; + +#ifdef CFG_DMA_ALLOC_LEN + /* Reserve DMA memory (must be cache aligned) */ + addr &= ~(CFG_DCACHE_LINESZ - 1); + addr -= CFG_DMA_ALLOC_LEN; +#endif - board_init_memories(); - mem_malloc_init(); + /* 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 = CFG_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); +} - 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; +void board_init_r(gd_t *new_gd, ulong dest_addr) +{ + extern void malloc_bin_reloc (void); +#ifndef CFG_ENV_IS_NOWHERE + extern char * env_name_spec; +#endif + cmd_tbl_t *cmdtp; + bd_t *bd; + + gd = new_gd; + bd = gd->bd; + + gd->flags |= GD_FLG_RELOC; + gd->reloc_off = dest_addr - CFG_MONITOR_BASE; + + 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 CFG_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 CFG_ENV_IS_NOWHERE + env_name_spec += gd->reloc_off; +#endif + + timer_init(); + mem_malloc_init(); + malloc_bin_reloc(); + dma_alloc_init(); board_init_info(); flash_init(); - if (gd->bd->bi_flashsize) + if (bd->bi_flashsize) display_flash_config(); - if (gd->bd->bi_dram[0].size) + if (bd->bi_dram[0].size) display_dram_config(); gd->bd->bi_boot_params = malloc(CFG_BOOTPARAMS_LEN); @@ -169,6 +328,13 @@ void start_u_boot (void) jumptable_init(); console_init_r(); +#if (CONFIG_COMMANDS & CFG_CMD_NET) +#if defined(CONFIG_NET_MULTI) + puts("Net: "); +#endif + eth_initialize(gd->bd); +#endif + for (;;) { main_loop(); } |