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authorBertrik Sikken <bertrik@sikken.nl>2011-12-10 11:28:00 +0000
committerBertrik Sikken <bertrik@sikken.nl>2011-12-10 11:28:00 +0000
commit75f2e4551cae45e1c3c5a9e499412db081b43ba7 (patch)
treeb52f52182c9703403dd1521d2f119e98e671d7f5
parentc9a8031695de392e229fdb389ca4a99421e02bdd (diff)
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AMS(v2): fix system_reboot by re-enabling the internal ROM clock just before rebooting
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@31196 a1c6a512-1295-4272-9138-f99709370657
-rw-r--r--firmware/export/as3525.h1
-rw-r--r--firmware/target/arm/as3525/system-as3525.c5
2 files changed, 5 insertions, 1 deletions
diff --git a/firmware/export/as3525.h b/firmware/export/as3525.h
index c5e01d5..bad88a2 100644
--- a/firmware/export/as3525.h
+++ b/firmware/export/as3525.h
@@ -223,6 +223,7 @@ CE lines
/* --- are disabled after reset --- */
#define CGU_EXTMEM_CLOCK_ENABLE ( 1 << 27 ) /* external memory */
#define CGU_EXTMEMIF_CLOCK_ENABLE ( 1 << 26 ) /* ext mem AHB IF */
+#define CGU_ROM_ENABLE ( 1 << 24 ) /* internal ROM */
#define CGU_DMA_CLOCK_ENABLE ( 1 << 22 ) /* dma */
#define CGU_USB_CLOCK_ENABLE ( 1 << 21 ) /* usb */
#define CGU_I2SOUT_APB_CLOCK_ENABLE ( 1 << 20 ) /* i2sout */
diff --git a/firmware/target/arm/as3525/system-as3525.c b/firmware/target/arm/as3525/system-as3525.c
index 31d6fb6..dcea7a2 100644
--- a/firmware/target/arm/as3525/system-as3525.c
+++ b/firmware/target/arm/as3525/system-as3525.c
@@ -224,7 +224,7 @@ void system_init(void)
CGU_PERI &= ~0x7f; /* pclk 24 MHz */
#endif
- CGU_PERI &= ~(1<<24); /*disable built in boot rom clock*/
+ CGU_PERI &= ~CGU_ROM_ENABLE; /*disable built in boot rom clock*/
/* bits 31:30 should be set to 0 in arm926-ejs */
asm volatile(
@@ -316,6 +316,9 @@ void system_reboot(void)
disable_irq();
+ /* re-enable internal ROM */
+ CGU_PERI |= CGU_ROM_ENABLE;
+
/* use watchdog to reset */
CGU_PERI |= (CGU_WDOCNT_CLOCK_ENABLE | CGU_WDOIF_CLOCK_ENABLE);
WDT_LOAD = 1; /* set counter to 1 */