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authorThibaut VARÈNE <hacks@slashdirt.org>2018-08-04 15:44:25 +0200
committerRafał Miłecki <rafal@milecki.pl>2018-08-24 11:46:48 +0200
commitb90cad2c2e61720b72a9cdd6317474cabc4962ec (patch)
tree6272cf8eb4e1844b83c2f752379b1d767dd85424 /target/linux
parent6100655c8ce29cd789da8e03b184da2ddb1008f5 (diff)
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ramips: fix RBM33G partitioning
This patch improves 5684d087418d176cfdef4e045e1950ca7ba3b09f by correcting the partition scheme for the "RouterBoot" section of the flash. The partition scheme initially submitted is incorrect and does not reflect the actual flash structure. The "RouterBoot" section (name matching OEM) is subdivided in several static segments, as they are on ar71xx RB devices albeit with different offsets and sizes. The naming convention from ar71xx has been preserved, except for the bootloaders which are named "bootloader1" and "bootloader2" to avoid confusion with the master "RouterBoot" partition. The preferred 'fixed-partitions' DTS node syntax is used, with nesting support as introduced in 2a598bbaa3. "partition" is used for node names, with associated "label" to match policy set by 6dd94c2781. The OEM source code also define a "RouterBootFake" partition at the beginning of the secondary flash chip: to avoid trouble if OEM ever makes use of that space, it is also defined here. The resulting partition scheme looks like this: [ 10.114241] m25p80 spi0.0: w25x40 (512 Kbytes) [ 10.118708] 1 fixed-partitions partitions found on MTD device spi0.0 [ 10.125049] Creating 1 MTD partitions on "spi0.0": [ 10.129824] 0x000000000000-0x000000040000 : "RouterBoot" [ 10.136215] 5 fixed-partitions partitions found on MTD device RouterBoot [ 10.142894] Creating 5 MTD partitions on "RouterBoot": [ 10.148032] 0x000000000000-0x00000000f000 : "bootloader1" [ 10.154336] 0x00000000f000-0x000000010000 : "hard_config" [ 10.160665] 0x000000010000-0x00000001f000 : "bootloader2" [ 10.167046] 0x000000020000-0x000000021000 : "soft_config" [ 10.173461] 0x000000030000-0x000000031000 : "bios" [ 10.190191] m25p80 spi0.1: w25q128 (16384 Kbytes) [ 10.194950] 2 fixed-partitions partitions found on MTD device spi0.1 [ 10.201271] Creating 2 MTD partitions on "spi0.1": [ 10.206071] 0x000000000000-0x000000040000 : "RouterBootFake" [ 10.212746] 0x000000040000-0x000001000000 : "firmware" [ 10.307216] 2 minor-fw partitions found on MTD device firmware [ 10.313044] 0x000000040000-0x000000220000 : "kernel" [ 10.319002] 0x000000220000-0x000001000000 : "rootfs" [ 10.324906] mtd: device 9 (rootfs) set to be root filesystem [ 10.330678] 1 squashfs-split partitions found on MTD device rootfs [ 10.336886] 0x000000b40000-0x000001000000 : "rootfs_data" Leave a note in DTS to explain how the original author selected the SPI speed. Tested-by: Tobias Schramm <tobleminer@gmail.com> Signed-off-by: Thibaut VARÈNE <hacks@slashdirt.org> Reviewed-by: Rafał Miłecki <rafal@milecki.pl> [rmilecki: dropped "RouterBootFake" partition] Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Diffstat (limited to 'target/linux')
-rw-r--r--target/linux/ramips/dts/RBM33G.dts47
1 files changed, 38 insertions, 9 deletions
diff --git a/target/linux/ramips/dts/RBM33G.dts b/target/linux/ramips/dts/RBM33G.dts
index 65560ab821..7c0d900105 100644
--- a/target/linux/ramips/dts/RBM33G.dts
+++ b/target/linux/ramips/dts/RBM33G.dts
@@ -106,15 +106,41 @@
#size-cells = <1>;
partition@0 {
- label = "routerboot";
- reg = <0x0 0xf000>;
- read-only;
- };
-
- factory: partition@f000 {
- label = "factory";
- reg = <0xf000 0x71000>;
+ label = "RouterBoot";
+ reg = <0x0 0x40000>;
read-only;
+ compatible = "fixed-partitions";
+ #address-cells = <1>;
+ #size-cells = <1>;
+
+ partition@0 {
+ label = "bootloader1";
+ reg = <0x0 0xf000>;
+ read-only;
+ };
+
+ hard_config: partition@f000 {
+ label = "hard_config";
+ reg = <0xf000 0x1000>;
+ read-only;
+ };
+
+ partition@10000 {
+ label = "bootloader2";
+ reg = <0x10000 0xf000>;
+ read-only;
+ };
+
+ partition@20000 {
+ label = "soft_config";
+ reg = <0x20000 0x1000>;
+ };
+
+ partition@30000 {
+ label = "bios";
+ reg = <0x30000 0x1000>;
+ read-only;
+ };
};
};
};
@@ -122,6 +148,7 @@
w25q128@1 {
compatible = "jedec,spi-nor";
reg = <1>;
+ // XXX empiric value to obtain actual 10MHz SCK at the chip
spi-max-frequency = <3125000>;
partitions {
@@ -129,6 +156,8 @@
#address-cells = <1>;
#size-cells = <1>;
+ // Region <0x0 0x40000> seems reserved by OEM
+
partition@40000 {
label = "firmware";
reg = <0x040000 0xFC0000>;
@@ -138,7 +167,7 @@
};
&ethernet {
- mtd-mac-address = <&factory 0x0010>;
+ mtd-mac-address = <&hard_config 0x0010>;
mtd-mac-address-increment = <1>;
};