After having extensivly tested three different units (2 Zaurus SL-5500,
1 SL-5500G) I finally send this small patches fixing collie's mtd.
The background is the improved support for the specific chips, see pending:
"mtd: cfi_cmdset_0001.c: add support for Sharp LH28F640BF NOR" for linux-mtd.
The most important is the first one reverting to cfi_probe
(the test-unit had broken CFI rom and CFI query was not matched).
The second one exposes the nor bootblock (in a read-only manner).
Sharp decided to put there just a few bytes, the sharpls_param
(COMADJ, UUID, TOUCH, AD, PHAD) set in the Diagnostic Menu.
Andrea Adami (2):
arm: sa1100: collie: revert back to cfi_probe
arm: sa1100: collie: add top boot mtd partition
arch/arm/mach-sa1100/collie.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
--
1.9.1
Reverts commit d26b17edafc45187c30cae134a5e5429d58ad676
ARM: sa1100: collie.c: fall back to jedec_probe flash detection
Unfortunately the detection was challenged on the defective unit used for tests:
one of the NOR chips did not respond to the CFI query.
Moreover that bad device needed extra delays on erase-suspend/resume cycles.
Tested personally on 3 different units and with feedback of two other users.
Signed-off-by: Andrea Adami <redacted>
---
arch/arm/mach-sa1100/collie.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/arm/mach-sa1100/collie.c b/arch/arm/mach-sa1100/collie.c
index f9874ba..f26aeea 100644
--- a/arch/arm/mach-sa1100/collie.c
+++ b/arch/arm/mach-sa1100/collie.c
@@ -356,7 +356,7 @@ static void collie_flash_exit(void)
}
static struct flash_platform_data collie_flash_data = {
- .map_name = "jedec_probe",
+ .map_name = "cfi_probe",
.init = collie_flash_init,
.set_vpp = collie_set_vpp,
.exit = collie_flash_exit,--
1.9.1
The CFI mapping is now perfect so we can expose the top block, read only.
There isn't much to read, though, just the sharpsl_params values.
Signed-off-by: Andrea Adami <redacted>
---
arch/arm/mach-sa1100/collie.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/arch/arm/mach-sa1100/collie.c b/arch/arm/mach-sa1100/collie.c
index f26aeea..3f449b0 100644
--- a/arch/arm/mach-sa1100/collie.c
+++ b/arch/arm/mach-sa1100/collie.c
@@ -329,6 +329,11 @@ static struct mtd_partition collie_partitions[] = {
.name = "rootfs",
.offset = MTDPART_OFS_APPEND,
.size = 0x00e20000,
+ }, {
+ .name = "bootblock",
+ .offset = MTDPART_OFS_APPEND,
+ .size = 0x00020000,
+ .mask_flags = MTD_WRITEABLE
}
};
--
1.9.1