The MIPS Malta board has a SOFTRES register. Writing a
magic value into that register initiates a board reset.
Use this feature to implement reset support.
Signed-off-by: Gabor Juhos <juh...@openwrt.org>
Cc: Daniel Schwierzeck <daniel.schwierz...@googlemail.com>
---
Changes since v2:
- don't use le32_to_cpu accessor, it is not needed because
the __raw_* IO accessors has been fixed mainline
- rebased against the master branch of git.denx.de/u-boot.git
Changes since v1:
- rebased against mips/testing
Changes since RFC: ---
Screenshot:
U-Boot 2013.04-00238-g0320f0c (May 21 2013 - 22:31:20)
Board: MIPS Malta CoreLV (Qemu)
DRAM: 256 MiB
Using default environment
In: serial
Out: serial
Err: serial
qemu-malta # reset
U-Boot 2013.04-00238-g0320f0c (May 21 2013 - 22:31:20)
Board: MIPS Malta CoreLV (Qemu)
DRAM: 256 MiB
Using default environment
In: serial
Out: serial
Err: serial
qemu-malta #
---
arch/mips/include/asm/malta.h | 3 +++
board/qemu-malta/qemu-malta.c | 11 +++++++++++
2 files changed, 14 insertions(+)
diff --git a/arch/mips/include/asm/malta.h b/arch/mips/include/asm/malta.h
index b215164..f2bbf0f 100644
--- a/arch/mips/include/asm/malta.h
+++ b/arch/mips/include/asm/malta.h
@@ -13,4 +13,7 @@
#define MALTA_UART_BASE (MALTA_IO_PORT_BASE + 0x3f8)
+#define MALTA_RESET_BASE 0x1f000500
+#define GORESET 0x42
+
#endif /* _MIPS_ASM_MALTA_H */
diff --git a/board/qemu-malta/qemu-malta.c b/board/qemu-malta/qemu-malta.c
index 9ba711d..449da9c 100644
--- a/board/qemu-malta/qemu-malta.c
+++ b/board/qemu-malta/qemu-malta.c
@@ -8,6 +8,9 @@
#include <common.h>
+#include <asm/io.h>
+#include <asm/malta.h>
+
phys_size_t initdram(int board_type)
{
return CONFIG_SYS_MEM_SIZE;
@@ -18,3 +21,11 @@ int checkboard(void)
puts("Board: MIPS Malta CoreLV (Qemu)\n");
return 0;
}
+
+void _machine_restart(void)
+{
+ void __iomem *reset_base;
+
+ reset_base = (void __iomem *)CKSEG1ADDR(MALTA_RESET_BASE);
+ __raw_writel(GORESET, reset_base);
+}
--
1.7.10
_______________________________________________
U-Boot mailing list
U-Boot@lists.denx.de
http://lists.denx.de/mailman/listinfo/u-boot
