diff options
Diffstat (limited to 'recipes/u-boot/u-boot-mkimage-openmoko-native/wakeup-reason-nand-only.patch')
| -rw-r--r-- | recipes/u-boot/u-boot-mkimage-openmoko-native/wakeup-reason-nand-only.patch | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/recipes/u-boot/u-boot-mkimage-openmoko-native/wakeup-reason-nand-only.patch b/recipes/u-boot/u-boot-mkimage-openmoko-native/wakeup-reason-nand-only.patch new file mode 100644 index 0000000000..132a9f8da5 --- /dev/null +++ b/recipes/u-boot/u-boot-mkimage-openmoko-native/wakeup-reason-nand-only.patch @@ -0,0 +1,68 @@ +This patch should get rid of spurious poweroff after booting from RAM. +Experimental. + +cpu/arm920t/start.S: record in global variable "booted_from_nand" whether we + booted from NAND or not +board/neo1973/neo1973.c (board_late_init): if booted from RAM, assume that + wakeup cause was "reset", and skip poweroff check + +- Werner Almesberger <werner@openmoko.org> + +Index: u-boot/board/neo1973/gta01/gta01.c +=================================================================== +--- u-boot.orig/board/neo1973/gta01/gta01.c ++++ u-boot/board/neo1973/gta01/gta01.c +@@ -226,12 +226,16 @@ + + int board_late_init(void) + { ++ extern unsigned char booted_from_nand; + unsigned char tmp; + char buf[32]; + + /* Initialize the Power Management Unit with a safe register set */ + pcf50606_init(); + ++ if (!booted_from_nand) ++ goto woken_by_reset; ++ + /* obtain wake-up reason, save INT1 in environment */ + tmp = pcf50606_reg_read(PCF50606_REG_INT1); + sprintf(buf, "0x%02x", tmp); +@@ -274,6 +278,7 @@ + neo1973_poweroff(); + } + ++woken_by_reset: + /* if there's no other reason, must be regular reset */ + neo1973_wakeup_cause = NEO1973_WAKEUP_RESET; + +Index: u-boot/cpu/arm920t/start.S +=================================================================== +--- u-boot.orig/cpu/arm920t/start.S ++++ u-boot/cpu/arm920t/start.S +@@ -77,6 +77,14 @@ + ************************************************************************* + */ + ++#ifdef CONFIG_S3C2410_NAND_BOOT ++.globl booted_from_nand ++booted_from_nand: ++ .word 0 ++_booted_from_nand: ++ .word booted_from_nand ++#endif /* CONFIG_S3C2410_NAND_BOOT */ ++ + _TEXT_BASE: + .word TEXT_BASE + +@@ -281,6 +289,9 @@ + #endif + 1: b 1b + done_nand_read: ++ ldr r0, _booted_from_nand ++ mov r1, #1 ++ strb r1, [r0] + #endif /* CONFIG_S3C2410_NAND_BOOT */ + done_relocate: + #endif /* CONFIG_SKIP_RELOCATE_UBOOT */ |