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authorPaul Gortmaker <paul.gortmaker@windriver.com>2013-01-23 15:13:31 -0500
committerKumar Gala <galak@kernel.crashing.org>2013-02-13 07:48:59 -0600
commit7e83f2ad3eeda5ebe701413918957b7d222bcdfd (patch)
tree6074c296388ca05067e4d688d93d58970225fd41 /arch/powerpc/boot
parentd1cf1c7db3460972fa93eb6816d9cae71a10e8c7 (diff)
downloadlinaro-lsk-7e83f2ad3eeda5ebe701413918957b7d222bcdfd.tar.gz
powerpc/85xx: update sbc8548 flash information to match recent u-boot
The original memory map for the sbc8548 had the 64MB SODIMM flash device misaligned by 8MB to allow a window of address space for the soldered on 8MB device -- i.e. start end CS<n> width Desc. ---------------------------------------------------------- fb80_0000 ff7f_ffff CS6 32 SODIMM flash (64MB) ff80_0000 ffff_ffff CS0 8 Boot flash (8MB) However, if we want to change the configuration so that it boots off the 64MB flash, it is in turn then aligned with a 64MB boundary, starting at fc00_0000 (and the 8MB @ fb80_0000 -> fbff_ffff). This makes for complicated updates, since what is the beginning of the physical device is 8MB into its address space in the default configuration shown above. This issue was fixed as of u-boot commit 3fd673cf363bc86ed42eff713d4 ("sbc8548: relocate 64MB user flash to sane boundary") -- in which the SODIMM was mapped to ec00_0000 (natively aligned under efff_ffff) and so when JP12/SW2.8 are switched, it will be a a simple 0xec --> 0xfc mapping between the two instances. Here we make the associated changes in the localbus flash memory map in the dts file: indicating the 64MB device starts at ec00_0000 and that the tail end of the 64MB device (last 2 sectors) can contain a bootloader image. The partitions for both flash devices get a clean-up; there were non-meaningful assignments in there that probably originated from the MPC8548CDS on which the file was based on. Now there is just the categorization of free space and bootloader images. Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/boot')
-rw-r--r--arch/powerpc/boot/dts/sbc8548.dts34
1 files changed, 15 insertions, 19 deletions
diff --git a/arch/powerpc/boot/dts/sbc8548.dts b/arch/powerpc/boot/dts/sbc8548.dts
index ad8dc6808d2..1df2a095566 100644
--- a/arch/powerpc/boot/dts/sbc8548.dts
+++ b/arch/powerpc/boot/dts/sbc8548.dts
@@ -28,23 +28,25 @@
0x3 0x0 0xf0000000 0x04000000 /*64MB SDRAM*/
0x4 0x0 0xf4000000 0x04000000 /*64MB SDRAM*/
0x5 0x0 0xf8000000 0x00b10000 /* EPLD */
- 0x6 0x0 0xfb800000 0x04000000>; /*64MB Flash*/
+ 0x6 0x0 0xec000000 0x04000000>; /*64MB Flash*/
flash@0,0 {
#address-cells = <1>;
#size-cells = <1>;
- compatible = "cfi-flash";
+ compatible = "intel,JS28F640", "cfi-flash";
reg = <0x0 0x0 0x800000>;
bank-width = <1>;
device-width = <1>;
partition@0x0 {
label = "space";
- reg = <0x00000000 0x00100000>;
+ /* FF800000 -> FFF9FFFF */
+ reg = <0x00000000 0x007a0000>;
};
- partition@0x100000 {
+ partition@0x7a0000 {
label = "bootloader";
- reg = <0x00100000 0x00700000>;
+ /* FFFA0000 -> FFFFFFFF */
+ reg = <0x007a0000 0x00060000>;
read-only;
};
};
@@ -87,26 +89,20 @@
#address-cells = <1>;
#size-cells = <1>;
reg = <0x6 0x0 0x04000000>;
- compatible = "cfi-flash";
+ compatible = "intel,JS28F128", "cfi-flash";
bank-width = <4>;
device-width = <1>;
partition@0x0 {
+ label = "space";
+ /* EC000000 -> EFEFFFFF */
+ reg = <0x00000000 0x03f00000>;
+ };
+ partition@0x03f00000 {
label = "bootloader";
- reg = <0x00000000 0x00100000>;
+ /* EFF00000 -> EFFFFFFF */
+ reg = <0x03f00000 0x00100000>;
read-only;
};
- partition@0x00100000 {
- label = "file-system";
- reg = <0x00100000 0x01f00000>;
- };
- partition@0x02000000 {
- label = "boot-config";
- reg = <0x02000000 0x00100000>;
- };
- partition@0x02100000 {
- label = "space";
- reg = <0x02100000 0x01f00000>;
- };
};
};
};