diff options
Diffstat (limited to 'lib_blackfin')
| -rw-r--r-- | lib_blackfin/Makefile | 2 | ||||
| -rw-r--r-- | lib_blackfin/board.c | 37 | ||||
| -rw-r--r-- | lib_blackfin/boot.c (renamed from lib_blackfin/bootm.c) | 19 | ||||
| -rw-r--r-- | lib_blackfin/string.c | 45 |
4 files changed, 66 insertions, 37 deletions
diff --git a/lib_blackfin/Makefile b/lib_blackfin/Makefile index 3f69770..fee0fda 100644 --- a/lib_blackfin/Makefile +++ b/lib_blackfin/Makefile @@ -37,7 +37,7 @@ SOBJS-y += memmove.o SOBJS-y += memset.o COBJS-y += board.o -COBJS-y += bootm.o +COBJS-y += boot.o COBJS-y += cache.o COBJS-y += muldi3.o COBJS-y += post.o diff --git a/lib_blackfin/board.c b/lib_blackfin/board.c index ddf8144..01b71d4 100644 --- a/lib_blackfin/board.c +++ b/lib_blackfin/board.c @@ -13,10 +13,10 @@ #include <command.h> #include <devices.h> #include <environment.h> -#include <i2c.h> #include <malloc.h> #include <net.h> #include <timestamp.h> +#include <status_led.h> #include <version.h> #include <asm/cplb.h> @@ -279,9 +279,13 @@ void board_init_f(ulong bootflag) dcache_enable(); #endif +#ifdef DEBUG + if (CONFIG_SYS_GBL_DATA_SIZE < sizeof(*gd)) + hang(); +#endif serial_early_puts("Init global data\n"); gd = (gd_t *) (CONFIG_SYS_GBL_DATA_ADDR); - memset((void *)gd, 0, sizeof(gd_t)); + memset((void *)gd, 0, CONFIG_SYS_GBL_DATA_SIZE); /* Board data initialization */ addr = (CONFIG_SYS_GBL_DATA_ADDR + sizeof(gd_t)); @@ -331,16 +335,6 @@ void board_init_f(ulong bootflag) board_init_r((gd_t *) gd, 0x20000010); } -#if defined(CONFIG_SOFT_I2C) || defined(CONFIG_HARD_I2C) -static int init_func_i2c(void) -{ - puts("I2C: "); - i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE); - puts("ready\n"); - return (0); -} -#endif - void board_init_r(gd_t * id, ulong dest_addr) { extern void malloc_bin_reloc(void); @@ -356,14 +350,14 @@ void board_init_r(gd_t * id, ulong dest_addr) #endif #if !defined(CONFIG_SYS_NO_FLASH) - /* There are some other pointer constants we must deal with */ - /* configure available FLASH banks */ + /* Initialize the flash and protect u-boot by default */ extern flash_info_t flash_info[]; ulong size = flash_init(); puts("Flash: "); print_size(size, "\n"); flash_protect(FLAG_PROTECT_SET, CONFIG_SYS_FLASH_BASE, - CONFIG_SYS_FLASH_BASE + 0x1ffff, &flash_info[0]); + CONFIG_SYS_FLASH_BASE + CONFIG_SYS_MONITOR_LEN - 1, + &flash_info[0]); bd->bi_flashstart = CONFIG_SYS_FLASH_BASE; bd->bi_flashsize = size; bd->bi_flashoffset = 0; @@ -420,6 +414,11 @@ void board_init_r(gd_t * id, ulong dest_addr) /* Initialize the console (after the relocation and devices init) */ console_init_r(); +#ifdef CONFIG_STATUS_LED + status_led_set(STATUS_LED_BOOT, STATUS_LED_BLINKING); + status_led_set(STATUS_LED_CRASH, STATUS_LED_OFF); +#endif + /* Initialize from environment */ if ((s = getenv("loadaddr")) != NULL) load_addr = simple_strtoul(s, NULL, 16); @@ -442,10 +441,6 @@ void board_init_r(gd_t * id, ulong dest_addr) bd->bi_enetaddr[3], bd->bi_enetaddr[4], bd->bi_enetaddr[5]); #endif -#if defined(CONFIG_SOFT_I2C) || defined(CONFIG_HARD_I2C) - init_func_i2c(); -#endif - display_global_data(); #if defined(CONFIG_POST) @@ -460,6 +455,10 @@ void board_init_r(gd_t * id, ulong dest_addr) void hang(void) { +#ifdef CONFIG_STATUS_LED + status_led_set(STATUS_LED_BOOT, STATUS_LED_OFF); + status_led_set(STATUS_LED_CRASH, STATUS_LED_BLINKING); +#endif puts("### ERROR ### Please RESET the board ###\n"); while (1) /* If a JTAG emulator is hooked up, we'll automatically trigger diff --git a/lib_blackfin/bootm.c b/lib_blackfin/boot.c index 195eb9c..951d5b0 100644 --- a/lib_blackfin/bootm.c +++ b/lib_blackfin/boot.c @@ -1,5 +1,5 @@ /* - * U-boot - bootm.c - misc boot helper functions + * U-boot - boot.c - misc boot helper functions * * Copyright (c) 2005-2008 Analog Devices Inc. * @@ -20,17 +20,19 @@ extern void swap_to(int device_id); static char *make_command_line(void) { - char *dest = (char *)CMD_LINE_ADDR; + char *dest = (char *)CONFIG_LINUX_CMDLINE_ADDR; char *bootargs = getenv("bootargs"); if (bootargs == NULL) return NULL; - strncpy(dest, bootargs, 0x1000); - dest[0xfff] = 0; + strncpy(dest, bootargs, CONFIG_LINUX_CMDLINE_SIZE); + dest[CONFIG_LINUX_CMDLINE_SIZE - 1] = 0; return dest; } +extern ulong bfin_poweron_retx; + int do_bootm_linux(int flag, int argc, char *argv[], bootm_headers_t *images) { int (*appl) (char *cmdline); @@ -45,11 +47,16 @@ int do_bootm_linux(int flag, int argc, char *argv[], bootm_headers_t *images) appl = (int (*)(char *))images->ep; - printf("Starting Kernel at = %x\n", appl); + printf("Starting Kernel at = %p\n", appl); cmdline = make_command_line(); icache_disable(); dcache_disable(); - (*appl) (cmdline); + asm __volatile__( + "RETX = %[retx];" + "CALL (%0);" + : + : "p"(appl), "q0"(cmdline), [retx] "d"(bfin_poweron_retx) + ); /* does not return */ return 1; diff --git a/lib_blackfin/string.c b/lib_blackfin/string.c index 6887c93..36eecdf 100644 --- a/lib_blackfin/string.c +++ b/lib_blackfin/string.c @@ -1,7 +1,7 @@ /* * U-boot - string.c Contains library routines. * - * Copyright (c) 2005-2007 Analog Devices Inc. + * Copyright (c) 2005-2008 Analog Devices Inc. * * (C) Copyright 2000-2004 * Wolfgang Denk, DENX Software Engineering, wd@denx.de. @@ -130,12 +130,22 @@ int strncmp(const char *cs, const char *ct, size_t count) # define bfin_write_MDMA_D0_IRQ_STATUS bfin_write_MDMA1_D0_IRQ_STATUS # define bfin_read_MDMA_D0_IRQ_STATUS bfin_read_MDMA1_D0_IRQ_STATUS #endif -static void *dma_memcpy(void *dst, const void *src, size_t count) +/* This version misbehaves for count values of 0 and 2^16+. + * Perhaps we should detect that ? Nowhere do we actually + * use dma memcpy for those types of lengths though ... + */ +void dma_memcpy_nocache(void *dst, const void *src, size_t count) { - if (dcache_status()) - blackfin_dcache_flush_range(src, src + count); + /* Scratchpad cannot be a DMA source or destination */ + if (((unsigned long)src >= L1_SRAM_SCRATCH && + (unsigned long)src < L1_SRAM_SCRATCH_END) || + ((unsigned long)dst >= L1_SRAM_SCRATCH && + (unsigned long)dst < L1_SRAM_SCRATCH_END)) + hang(); - bfin_write_MDMA_D0_IRQ_STATUS(DMA_DONE | DMA_ERR); + bfin_write_MDMA_S0_CONFIG(0); + bfin_write_MDMA_D0_CONFIG(0); + bfin_write_MDMA_D0_IRQ_STATUS(DMA_RUN | DMA_DONE | DMA_ERR); /* Copy sram functions from sdram to sram */ /* Setup destination start address */ @@ -154,20 +164,33 @@ static void *dma_memcpy(void *dst, const void *src, size_t count) /* Enable source DMA */ bfin_write_MDMA_S0_CONFIG(DMAEN); - SSYNC(); bfin_write_MDMA_D0_CONFIG(WNR | DMAEN); + SSYNC(); while (bfin_read_MDMA_D0_IRQ_STATUS() & DMA_RUN) - bfin_write_MDMA_D0_IRQ_STATUS(bfin_read_MDMA_D0_IRQ_STATUS() | DMA_DONE | DMA_ERR); - bfin_write_MDMA_D0_IRQ_STATUS(bfin_read_MDMA_D0_IRQ_STATUS() | DMA_DONE | DMA_ERR); + continue; + + bfin_write_MDMA_D0_IRQ_STATUS(bfin_read_MDMA_D0_IRQ_STATUS() | DMA_RUN | DMA_DONE | DMA_ERR); + bfin_write_MDMA_D0_CONFIG(0); + bfin_write_MDMA_S0_CONFIG(0); +} +/* We should do a dcache invalidate on the destination after the dma, but since + * we lack such hardware capability, we'll flush/invalidate the destination + * before the dma and bank on the idea that u-boot is single threaded. + */ +void *dma_memcpy(void *dst, const void *src, size_t count) +{ + if (dcache_status()) { + blackfin_dcache_flush_range(src, src + count); + blackfin_dcache_flush_invalidate_range(dst, dst + count); + } + + dma_memcpy_nocache(dst, src, count); if (icache_status()) blackfin_icache_flush_range(dst, dst + count); - if (dcache_status()) - blackfin_dcache_invalidate_range(dst, dst + count); - return dst; } |