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generated by cgit v1.2.3 (git 2.25.1) at 2025-11-16 04:33:31 +0000

From e8afde87ecf56beff67c7d5371cabaa4fc018541 Mon Sep 17 00:00:00 2001
From: Hauke Mehrtens <hauke@hauke-m.de>
Date: Sat, 23 Jul 2011 23:57:06 +0200
Subject: [PATCH 14/26] ssb: move flash to chipcommon


Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
---
 arch/mips/bcm47xx/nvram.c                 |    8 +++---
 arch/mips/bcm47xx/wgt634u.c               |    8 +++---
 drivers/ssb/driver_mipscore.c             |   36 +++++++++++++++++++++-------
 include/linux/ssb/ssb_driver_chipcommon.h |   18 ++++++++++++++
 include/linux/ssb/ssb_driver_mips.h       |    4 ---
 5 files changed, 53 insertions(+), 21 deletions(-)

--- a/arch/mips/bcm47xx/nvram.c
+++ b/arch/mips/bcm47xx/nvram.c
@@ -27,7 +27,7 @@ static char nvram_buf[NVRAM_SPACE];
 static void early_nvram_init(void)
 {
 #ifdef CONFIG_BCM47XX_SSB
-	struct ssb_mipscore *mcore_ssb;
+	struct ssb_chipcommon *ssb_cc;
 #endif
 #ifdef CONFIG_BCM47XX_BCMA
 	struct bcma_drv_cc *bcma_cc;
@@ -42,9 +42,9 @@ static void early_nvram_init(void)
 	switch (bcm47xx_bus_type) {
 #ifdef CONFIG_BCM47XX_SSB
 	case BCM47XX_BUS_TYPE_SSB:
-		mcore_ssb = &bcm47xx_bus.ssb.mipscore;
-		base = mcore_ssb->flash_window;
-		lim = mcore_ssb->flash_window_size;
+		ssb_cc = &bcm47xx_bus.ssb.chipco;
+		base = ssb_cc->pflash.window;
+		lim = ssb_cc->pflash.window_size;
 		break;
 #endif
 #ifdef CONFIG_BCM47XX_BCMA
--- a/arch/mips/bcm47xx/wgt634u.c
+++ b/arch/mips/bcm47xx/wgt634u.c
@@ -156,10 +156,10 @@ static int __init wgt634u_init(void)
 					    SSB_CHIPCO_IRQ_GPIO);
 		}
 
-		wgt634u_flash_data.width = mcore->flash_buswidth;
-		wgt634u_flash_resource.start = mcore->flash_window;
-		wgt634u_flash_resource.end = mcore->flash_window
-					   + mcore->flash_window_size
+		wgt634u_flash_data.width = mcore->pflash.buswidth;
+		wgt634u_flash_resource.start = mcore->pflash.window;
+		wgt634u_flash_resource.end = mcore->pflash.window
+					   + mcore->pflash.window_size
 					   - 1;
 		return platform_add_devices(wgt634u_devices,
 					    ARRAY_SIZE(wgt634u_devices));
--- a/drivers/ssb/driver_mipscore.c
+++ b/drivers/ssb/driver_mipscore.c
@@ -190,16 +190,34 @@ 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) {
+		pr_info("found parallel flash.\n");
+		bus->chipco.flash_type = SSB_PFLASH;
+		bus->chipco.pflash.window = SSB_FLASH1;
+		bus->chipco.pflash.window_size = SSB_FLASH1_SZ;
+		bus->chipco.pflash.buswidth = 2;
+		return;
+	}
+
+	switch (bus->chipco.capabilities & SSB_CHIPCO_CAP_FLASHT) {
+	case SSB_CHIPCO_FLASHT_STSER:
+	case SSB_CHIPCO_FLASHT_ATSER:
+		pr_info("serial flash not supported.\n");
+		break;
+	case SSB_CHIPCO_FLASHT_PARA:
+		pr_info("found parallel flash.\n");
+		bus->chipco.flash_type = SSB_PFLASH;
+		bus->chipco.pflash.window = SSB_FLASH2;
+		bus->chipco.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;
+		     & SSB_CHIPCO_CFG_DS16) == 0)
+			bus->chipco.pflash.buswidth = 1;
+		else
+			bus->chipco.pflash.buswidth = 2;
+		break;
+	default:
+		pr_err("flash not supported.\n");
 	}
 }
 
--- a/include/linux/ssb/ssb_driver_chipcommon.h
+++ b/include/linux/ssb/ssb_driver_chipcommon.h
@@ -582,6 +582,18 @@ struct ssb_chipcommon_pmu {
 	u32 crystalfreq;	/* The active crystal frequency (in kHz) */
 };
 
+#ifdef CONFIG_SSB_DRIVER_MIPS
+enum ssb_flash_type {
+	SSB_PFLASH,
+};
+
+struct ssb_pflash {
+	u8 buswidth;
+	u32 window;
+	u32 window_size;
+};
+#endif /* CONFIG_SSB_DRIVER_MIPS */
+
 struct ssb_chipcommon {
 	struct ssb_device *dev;
 	u32 capabilities;
@@ -589,6 +601,12 @@ struct ssb_chipcommon {
 	/* Fast Powerup Delay constant */
 	u16 fast_pwrup_delay;
 	struct ssb_chipcommon_pmu pmu;
+#ifdef CONFIG_SSB_DRIVER_MIPS
+	enum ssb_flash_type flash_type;
+	union {
+		struct ssb_pflash pflash;
+	};
+#endif /* CONFIG_SSB_DRIVER_MIPS */
 };
 
 static inline bool ssb_chipco_available(struct ssb_chipcommon *cc)
--- a/include/linux/ssb/ssb_driver_mips.h
+++ b/include/linux/ssb/ssb_driver_mips.h
@@ -19,10 +19,6 @@ struct ssb_mipscore {
 
 	int nr_serial_ports;
 	struct ssb_serial_port serial_ports[4];
-
-	u8 flash_buswidth;
-	u32 flash_window;
-	u32 flash_window_size;
 };
 
 extern void ssb_mipscore_init(struct ssb_mipscore *mcore);