The physical base address of the NOR flash is 0x1e000000
on the Malta boards. The hardware also maps the first 4MiB
of the flash into the 0x1fc00000-0x1fffffff range.
Currently, U-Boot uses the mapped address to access the
flash, which does not work in recent qemu versions.
Since commit a427338b222b43197c2776cbc996936df0302f51
(mips_malta: correct reading MIPS revision at 0x1fc00010)
writing to the mapped address space causes a CPU exception.
Due to the exception, U-Boot hangs during boot when it tries
to detect the CFI flash chip.
Use the correct physical address for the MALTA_FLASH_BASE
constant to fix the problem. In order to avoid relocation
problems, also update the CONFIG_SYS_{TEXT,MONITOR}_BASE
constants.
The change makes it possible to start U-Boot on a Malta
board emulated with Qemu 1.6.1 and 1.7.0-rc0. It also
works on older versions (tested with 1.1.1, 1.2.2, 1.4.2,
1.5.3).
Signed-off-by: Gabor Juhos <juh...@openwrt.org>
Signed-off-by: Daniel Schwierzeck <daniel.schwierz...@gmail.com>
Cc: Paul Burton <paul.bur...@imgtec.com>
---
Changes since v1:
- update CONFIG_SYS_{TEXT,MONITOR}_BASE constants
- update commit message
---
arch/mips/include/asm/malta.h | 2 +-
include/configs/malta.h | 4 ++--
2 files changed, 3 insertions(+), 3 deletions(-)
diff --git a/arch/mips/include/asm/malta.h b/arch/mips/include/asm/malta.h
index 9b1100b..bd9043d 100644
--- a/arch/mips/include/asm/malta.h
+++ b/arch/mips/include/asm/malta.h
@@ -44,7 +44,7 @@
#define MALTA_RESET_BASE 0x1f000500
#define GORESET 0x42
-#define MALTA_FLASH_BASE 0x1fc00000
+#define MALTA_FLASH_BASE 0x1e000000
#define MALTA_REVISION 0x1fc00010
#define MALTA_REVISION_CORID_SHF 10
diff --git a/include/configs/malta.h b/include/configs/malta.h
index 4098e72..458c33a 100644
--- a/include/configs/malta.h
+++ b/include/configs/malta.h
@@ -40,8 +40,8 @@
/*
* Memory map
*/
-#define CONFIG_SYS_TEXT_BASE 0xbfc00000 /* Rom version */
-#define CONFIG_SYS_MONITOR_BASE CONFIG_SYS_FLASH_BASE
+#define CONFIG_SYS_TEXT_BASE 0xbe000000 /* Rom version */
+#define CONFIG_SYS_MONITOR_BASE CONFIG_SYS_TEXT_BASE
#define CONFIG_SYS_SDRAM_BASE 0x80000000 /* Cached addr */
#define CONFIG_SYS_MEM_SIZE (256 * 1024 * 1024)
--
1.7.10
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