r1059 - trunk/src/target/u-boot/patches
laforge at sita.openmoko.org
laforge at sita.openmoko.org
Tue Feb 20 19:55:50 CET 2007
Author: laforge
Date: 2007-02-20 19:55:50 +0100 (Tue, 20 Feb 2007)
New Revision: 1059
Added:
trunk/src/target/u-boot/patches/uboot-neo1973-resume.patch
Modified:
trunk/src/target/u-boot/patches/series
Log:
add (not yet working) suspend/resume from/to RAM support (Ben Dooks)
Modified: trunk/src/target/u-boot/patches/series
===================================================================
--- trunk/src/target/u-boot/patches/series 2007-02-20 18:54:48 UTC (rev 1058)
+++ trunk/src/target/u-boot/patches/series 2007-02-20 18:55:50 UTC (rev 1059)
@@ -17,6 +17,7 @@
uboot-s3c2410_fb.patch
uboot-20061030-qt2410.patch
uboot-20061030-neo1973.patch
+uboot-neo1973-resume.patch
# this will be somewhat more difficult
nand-dynamic_partitions.patch
Added: trunk/src/target/u-boot/patches/uboot-neo1973-resume.patch
===================================================================
--- trunk/src/target/u-boot/patches/uboot-neo1973-resume.patch 2007-02-20 18:54:48 UTC (rev 1058)
+++ trunk/src/target/u-boot/patches/uboot-neo1973-resume.patch 2007-02-20 18:55:50 UTC (rev 1059)
@@ -0,0 +1,66 @@
+Resume support for low-level uboot code
+
+Signed-off-by: Ben Dooks <ben-linux at fluff.org>
+
+--- u-boot-1.2.0/board/neo1973/lowlevel_init.S 2007-02-20 00:49:00.000000000 +0000
++++ u-boot-1.2.0-bjd1/board/neo1973/lowlevel_init.S 2007-02-20 01:34:50.000000000 +0000
+@@ -40,6 +40,8 @@
+ *
+ */
+
++#include "s3c2410.h"
++
+ #define BWSCON 0x48000000
+
+ /* BWSCON */
+@@ -134,6 +136,17 @@ _TEXT_BASE:
+
+ .globl lowlevel_init
+ lowlevel_init:
++ /* 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
++
+ /* memory control configuration */
+ /* make r0 relative the current location so that it */
+ /* reads SMRDATA out of FLASH rather than memory ! */
+@@ -152,7 +165,7 @@ lowlevel_init:
+ mrc p15, 0, r1 ,c1 ,c0, 0
+ orr r1, r1, #0xc0000000
+ mcr p15, 0, r1, c1, c0, 0
+-
++
+ #if defined(CONFIG_ARCH_GTA01_v4) || defined(CONFIG_ARCH_GTA01B_v2) || defined(CONFIG_ARCH_GTA01B_v3)
+ /* switch on power for NAND */
+ ldr r0, =0x56000010 /* GPBCON */
+@@ -165,7 +178,22 @@ lowlevel_init:
+ orr r1, r1, #(1 <<2)
+ str r1, [r0]
+ #endif
+-
++
++ /* ensure some refresh has happened */
++ mov r1, #4096
++1: subs r1, r1, #1
++ bpl 1b
++
++ /* test for resume */
++ ldr r0, =0x560000B4 /* gstatus2 */
++ ldr r0, [ r0 ]
++ tst r0, #0x02 /* is this resume from power down */
++ beq not_resuming
++
++ ldr r0, =0x560000B4 /* gstatus3 */
++ ldr pc, [r0] /* resume execution */
++
++not_resuming:
+ /* everything is fine now */
+ mov pc, lr
+
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