Hi,
we are working on a Customized ARM Board. I am trying to port Uboot for the same board. I found that few patches were required for ARM Specidifc Modules and below are the few patches that i found usefull.
1. I2C Init func in lib_arm/board.c --> found the same in ppc,blackfin modules ------------------------------------------------------------------------------
--- u-boot-1.3.1/lib_arm/board.c 2007-12-06 01:21:19.000000000 -0800 +++ uboot/lib_arm/board.c 2007-12-12 19:57:51.296875000 -0800 @@ -84,6 +84,11 @@ extern void cs8900_get_enetaddr (uchar * extern void rtl8019_get_enetaddr (uchar * addr); #endif
+#if defined(CONFIG_HARD_I2C) || \ + defined(CONFIG_SOFT_I2C) +#include <i2c.h> +#endif + /* * Begin and End of memory area for malloc(), and current "brk" */ @@ -209,6 +214,16 @@ static void display_flash_config (ulong } #endif /* CFG_NO_FLASH */
+#if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C) +static int init_func_i2c (void) +{ + puts ("I2C: "); + i2c_init (CFG_I2C_SPEED, CFG_I2C_SLAVE); + puts ("ready\n"); + return (0); +} +#endif + /* * Breathe some life into the board... * @@ -251,6 +266,9 @@ init_fnc_t *init_sequence[] = { #if defined(CONFIG_DISPLAY_BOARDINFO) checkboard, /* display board info */ #endif +#if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C) + init_func_i2c, +#endif dram_init, /* configure available RAM banks */ display_dram_config, NULL,
2. Remove cpu_init_crit module if CONFIG_SKIP_LOWLEVEL_INIT not define. at present even if CONFIG_SKIP_LOWLEVEL_INIT is not defined, cpu_init_crit is defined in uboot\cpu\arm926ejs\start.S ------------------------------------------------------------------------------
--- u-boot-1.3.1/cpu/arm926ejs/start.S 2007-12-06 01:21:19.000000000 -0800 +++ uboot/cpu/arm926ejs/start.S 2007-12-18 20:19:36.296875000 -0800 @@ -187,7 +187,7 @@ clbss_l:str r2, [r0] /* clear loop... _start_armboot: .word start_armboot
- +#ifndef CONFIG_SKIP_LOWLEVEL_INIT /* ************************************************************************* * @@ -225,6 +225,9 @@ cpu_init_crit: bl lowlevel_init /* go setup pll,mux,memory */ mov lr, ip /* restore link */ mov pc, lr /* back to my caller */ + +#endif /* CONFIG_SKIP_LOWLEVEL_INIT */ + /* ************************************************************************* *
3.Remove compiler warning: target CPU does not support interworking ------------------------------------------------------------------- --- u-boot-1.3.1/cpu/arm926ejs/config.mk 2007-12-06 01:21:19.000000000 -0800 +++ uboot/cpu/arm926ejs/config.mk 2007-12-18 20:22:57.093750000 -0800 @@ -31,4 +31,5 @@ PLATFORM_CPPFLAGS += -march=armv4 # # ========================================================================= PLATFORM_CPPFLAGS +=$(call cc-option,-mapcs-32,-mabi=apcs-gnu) +PLATFORM_CPPFLAGS +=$(call cc-option,-mno-thumb-interwork,) PLATFORM_RELFLAGS +=$(call cc-option,-mshort-load-bytes,$(call cc-option,-malignment-traps,))
4. Display Ethernet inf in do_bdinfo only if CONFIG_CMD_NET is defined ---------------------------------------------------------------------- --- u-boot-1.3.1/common/cmd_bdinfo.c 2007-12-06 01:21:19.000000000 -0800 +++ uboot/common/cmd_bdinfo.c 2007-12-18 19:46:41.625000000 -0800 @@ -314,6 +314,7 @@ int do_bdinfo ( cmd_tbl_t *cmdtp, int fl print_num("-> size", bd->bi_dram[i].size); }
+#if defined(CONFIG_CMD_NET) puts ("ethaddr ="); for (i=0; i<6; ++i) { printf ("%c%02X", i ? ':' : ' ', bd->bi_enetaddr[i]); @@ -321,6 +322,7 @@ int do_bdinfo ( cmd_tbl_t *cmdtp, int fl puts ( "\n" "ip_addr = "); print_IPaddr (bd->bi_ip_addr); +#endif printf ("\n" "baudrate = %d bps\n", bd->bi_baudrate);
I welcome comments, complaints, suggestions and advices.
Regards Gururaja