1 files changed, 82 insertions, 0 deletions
diff --git a/target/linux/generic/patches-3.6/020-ssb_update.patch b/target/linux/generic/patches-3.6/020-ssb_update.patch
new file mode 100644
index 000000000..e61be82fe
--- /dev/null
+++ b/target/linux/generic/patches-3.6/020-ssb_update.patch
@@ -0,0 +1,82 @@
+--- a/drivers/ssb/driver_mipscore.c
++++ b/drivers/ssb/driver_mipscore.c
+@@ -190,16 +190,32 @@ static void ssb_mips_flash_detect(struct
+ {
+ 	struct ssb_bus *bus = mcore->dev->bus;
+ 
+-	mcore->flash_buswidth = 2;
+-	if (bus->chipco.dev) {
+-		mcore->flash_window = 0x1c000000;
+-		mcore->flash_window_size = 0x02000000;
++	/* When there is no chipcommon on the bus there is 4MB flash */
++	if (!bus->chipco.dev) {
++		mcore->pflash.present = true;
++		mcore->pflash.buswidth = 2;
++		mcore->pflash.window = SSB_FLASH1;
++		mcore->pflash.window_size = SSB_FLASH1_SZ;
++		return;
++	}
++
++	/* There is ChipCommon, so use it to read info about flash */
++	switch (bus->chipco.capabilities & SSB_CHIPCO_CAP_FLASHT) {
++	case SSB_CHIPCO_FLASHT_STSER:
++	case SSB_CHIPCO_FLASHT_ATSER:
++		pr_err("Serial flash not supported\n");
++		break;
++	case SSB_CHIPCO_FLASHT_PARA:
++		pr_debug("Found parallel flash\n");
++		mcore->pflash.present = true;
++		mcore->pflash.window = SSB_FLASH2;
++		mcore->pflash.window_size = SSB_FLASH2_SZ;
+ 		if ((ssb_read32(bus->chipco.dev, SSB_CHIPCO_FLASH_CFG)
+ 		               & SSB_CHIPCO_CFG_DS16) == 0)
+-			mcore->flash_buswidth = 1;
+-	} else {
+-		mcore->flash_window = 0x1fc00000;
+-		mcore->flash_window_size = 0x00400000;
++			mcore->pflash.buswidth = 1;
++		else
++			mcore->pflash.buswidth = 2;
++		break;
+ 	}
+ }
+ 
+--- a/include/linux/ssb/ssb_driver_chipcommon.h
++++ b/include/linux/ssb/ssb_driver_chipcommon.h
+@@ -504,7 +504,9 @@
+ #define SSB_CHIPCO_FLASHCTL_ST_SE	0x02D8		/* Sector Erase */
+ #define SSB_CHIPCO_FLASHCTL_ST_BE	0x00C7		/* Bulk Erase */
+ #define SSB_CHIPCO_FLASHCTL_ST_DP	0x00B9		/* Deep Power-down */
+-#define SSB_CHIPCO_FLASHCTL_ST_RSIG	0x03AB		/* Read Electronic Signature */
++#define SSB_CHIPCO_FLASHCTL_ST_RES	0x03AB		/* Read Electronic Signature */
++#define SSB_CHIPCO_FLASHCTL_ST_CSA	0x1000		/* Keep chip select asserted */
++#define SSB_CHIPCO_FLASHCTL_ST_SSE	0x0220		/* Sub-sector Erase */
+ 
+ /* Status register bits for ST flashes */
+ #define SSB_CHIPCO_FLASHSTA_ST_WIP	0x01		/* Write In Progress */
+--- a/include/linux/ssb/ssb_driver_mips.h
++++ b/include/linux/ssb/ssb_driver_mips.h
+@@ -13,6 +13,12 @@ struct ssb_serial_port {
+ 	unsigned int reg_shift;
+ };
+ 
++struct ssb_pflash {
++	bool present;
++	u8 buswidth;
++	u32 window;
++	u32 window_size;
++};
+ 
+ struct ssb_mipscore {
+ 	struct ssb_device *dev;
+@@ -20,9 +26,7 @@ struct ssb_mipscore {
+ 	int nr_serial_ports;
+ 	struct ssb_serial_port serial_ports[4];
+ 
+-	u8 flash_buswidth;
+-	u32 flash_window;
+-	u32 flash_window_size;
++	struct ssb_pflash pflash;
+ };
+ 
+ extern void ssb_mipscore_init(struct ssb_mipscore *mcore);