diff options
Diffstat (limited to 'board/innokom/innokom.c')
| -rw-r--r-- | board/innokom/innokom.c | 50 |
1 files changed, 47 insertions, 3 deletions
diff --git a/board/innokom/innokom.c b/board/innokom/innokom.c index 7d2702f658..17f6353d2e 100644 --- a/board/innokom/innokom.c +++ b/board/innokom/innokom.c @@ -25,6 +25,7 @@ #include <common.h> #include <asm/arch/pxa-regs.h> +#include <asm/mach-types.h> #ifdef CONFIG_SHOW_BOOT_PROGRESS # define SHOW_BOOT_PROGRESS(arg) show_boot_progress(arg) @@ -32,10 +33,53 @@ # define SHOW_BOOT_PROGRESS(arg) #endif -/* - * Miscelaneous platform dependent initialisations +/** + * i2c_init_board - reset i2c bus. When the board is powercycled during a + * bus transfer it might hang; for details see doc/I2C_Edge_Conditions. + * The Innokom board has GPIO70 connected to SCLK which can be toggled + * until all chips think that their current cycles are finished. + */ +int i2c_init_board(void) +{ + int i; + + /* set gpio pin to output */ + GPDR(70) |= GPIO_bit(70); + for (i = 0; i < 11; i++) { + GPCR(70) = GPIO_bit(70); + udelay(10); + GPSR(70) = GPIO_bit(70); + udelay(10); + } + /* set gpio pin to input */ + GPDR(70) &= ~GPIO_bit(70); + + return 0; +} + + +/** + * misc_init_r: - misc initialisation routines */ +int misc_init_r(void) +{ + uchar *str; + + /* determine if the software update key is pressed during startup */ + if (GPLR0 & 0x00000800) { + printf("using bootcmd_normal (sw-update button not pressed)\n"); + str = getenv("bootcmd_normal"); + } else { + printf("using bootcmd_update (sw-update button pressed)\n"); + str = getenv("bootcmd_update"); + } + + setenv("bootcmd",str); + + return 0; +} + /** * board_init: - setup some data structures @@ -51,7 +95,7 @@ int board_init (void) /* so we do _nothing_ here */ /* arch number of Innokom board */ - gd->bd->bi_arch_number = 258; + gd->bd->bi_arch_number = MACH_TYPE_INNOKOM; /* adress of boot parameters */ gd->bd->bi_boot_params = 0xa0000100; |