diff options
Diffstat (limited to 'packages/uboot/u-boot-mkimage-gta01-native/uboot-neo1973-resume.patch')
| -rw-r--r-- | packages/uboot/u-boot-mkimage-gta01-native/uboot-neo1973-resume.patch | 113 |
1 files changed, 113 insertions, 0 deletions
diff --git a/packages/uboot/u-boot-mkimage-gta01-native/uboot-neo1973-resume.patch b/packages/uboot/u-boot-mkimage-gta01-native/uboot-neo1973-resume.patch new file mode 100644 index 0000000000..19d912620d --- /dev/null +++ b/packages/uboot/u-boot-mkimage-gta01-native/uboot-neo1973-resume.patch @@ -0,0 +1,113 @@ +Resume support for low-level uboot code, Version 5 + +Signed-off-by: Ben Dooks <ben-linux@fluff.org> + +Index: u-boot/cpu/arm920t/start.S +=================================================================== +--- u-boot.orig/cpu/arm920t/start.S 2007-02-28 03:51:24.000000000 +0100 ++++ u-boot/cpu/arm920t/start.S 2007-03-01 02:43:47.000000000 +0100 +@@ -158,18 +158,68 @@ + str r1, [r0] + # endif + ++ /* default FCLK is 202 MHz ! */ ++#define LOCKTIME 0x4c000000 ++#define UPLLCON 0x4c000008 ++//#define MPLLCFG ((0x90 << 12) + (0x2 << 4) + 0x2) ++#define MPLLCFG ((0x90 << 12) + (0x7 << 4) + 0x0) ++#define UPLLCFG ((0x78 << 12) + (0x2 << 4) + 0x3) ++ ldr r0, =LOCKTIME ++ mov r1, #0xffffff ++ str r1, [r0] ++ ++ ldr r0, =UPLLCON ++ ldr r1, =UPLLCFG ++ str r1, [r0] ++ ++ /* Page 7-19, seven nops between UPLL and MPLL */ ++ nop ++ nop ++ nop ++ nop ++ nop ++ nop ++ nop ++ ++ ldr r1, =MPLLCFG ++ str r1, [r0, #-4] /* MPLLCON */ ++ + /* FCLK:HCLK:PCLK = 1:2:4 */ +- /* default FCLK is 120 MHz ! */ + ldr r0, =CLKDIVN + mov r1, #3 + str r1, [r0] ++ ++#if 1 ++ /* enable uart */ ++ ldr r0, =0x4c00000c /* clkcon */ ++ ldr r1, =0x7fff0 /* all clocks on */ ++ str r1, [r0] ++ ++ /* gpio UART0 init */ ++ ldr r0, =0x56000070 ++ mov r1, #0xaa ++ str r1, [r0] ++ ++ /* init uart */ ++ ldr r0, =0x50000000 ++ mov r1, #0x03 ++ str r1, [r0] ++ ldr r1, =0x245 ++ str r1, [r0, #0x04] ++ mov r1, #0x01 ++ str r1, [r0, #0x08] ++ mov r1, #0x00 ++ str r1, [r0, #0x0c] ++ mov r1, #0x1a ++ str r1, [r0, #0x28] ++#endif ++ + #endif /* CONFIG_S3C2400 || CONFIG_S3C2410 */ + + #ifndef CONFIG_SKIP_LOWLEVEL_INIT + #ifndef CONFIG_LL_INIT_NAND_ONLY + bl cpu_init_crit + #endif +-#endif + + #ifndef CONFIG_SKIP_RELOCATE_UBOOT + adr r0, _start /* r0 <- current position of code */ +@@ -202,9 +252,33 @@ + + #ifdef CONFIG_S3C2410_NAND_BOOT + nand_load: ++ /* take sdram out of power down */ ++ ldr r0, =0x56000080 /* misccr */ ++ ldr r1, [ r0 ] ++ bic r1, r1, #(S3C2410_MISCCR_nEN_SCLK0 | S3C2410_MISCCR_nEN_SCLK1 | S3C2410_MISCCR_nEN_SCLKE) ++ str r1, [ r0 ] ++ ++ /* ensure signals stabalise */ ++ mov r1, #128 ++1: subs r1, r1, #1 ++ bpl 1b ++ + #if !defined(CONFIG_SKIP_LOWLEVEL_INIT) && defined(CONFIG_LL_INIT_NAND_ONLY) + bl cpu_init_crit + #endif ++#if defined(CONFIG_S3C2410) ++ /* ensure some refresh has happened */ ++ ldr r1, =0xfffff ++1: subs r1, r1, #1 ++ bpl 1b ++ ++ /* test for resume */ ++ ldr r1, =0x560000B4 /* gstatus2 */ ++ ldr r0, [ r1 ] ++ tst r0, #0x02 /* is this resume from power down */ ++ ldrne pc, [r1, #4] /* gstatus3 */ ++#endif /* CONFIG_S3C2410 */ ++#endif /* CONFIG_SKIP_LOWLEVEL_INIT */ + + /* mov r10, lr */ + |