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From a1d9c96a6c9b37b26dc1149706f3061b57a62b50 Mon Sep 17 00:00:00 2001
From: Hauke Mehrtens <hauke@hauke-m.de>
Date: Sun, 17 Jul 2011 14:51:47 +0200
Subject: [PATCH 12/22] bcma: move parallel flash into a union
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
---
arch/mips/bcm47xx/nvram.c | 7 ++-
drivers/bcma/driver_mips.c | 9 ++--
include/linux/bcma/bcma_driver_chipcommon.h | 75 ++++++++++++++++++++++++++-
3 files changed, 84 insertions(+), 7 deletions(-)
--- a/arch/mips/bcm47xx/nvram.c
+++ b/arch/mips/bcm47xx/nvram.c
@@ -50,8 +50,11 @@ static void early_nvram_init(void)
#ifdef CONFIG_BCM47XX_BCMA
case BCM47XX_BUS_TYPE_BCMA:
bcma_cc = &bcm47xx_bus.bcma.bus.drv_cc;
- base = bcma_cc->pflash.window;
- lim = bcma_cc->pflash.window_size;
+ if (bcma_cc->flash_type != BCMA_PFLASH)
+ return;
+
+ base = bcma_cc->flash.pflash.window;
+ lim = bcma_cc->flash.pflash.window_size;
break;
#endif
}
--- a/drivers/bcma/driver_mips.c
+++ b/drivers/bcma/driver_mips.c
@@ -189,14 +189,15 @@ static void bcma_core_mips_flash_detect(
break;
case BCMA_CC_FLASHT_PARA:
pr_info("found parallel flash.\n");
- bus->drv_cc.pflash.window = 0x1c000000;
- bus->drv_cc.pflash.window_size = 0x02000000;
+ bus->drv_cc.flash_type = BCMA_PFLASH;
+ bus->drv_cc.flash.pflash.window = 0x1c000000;
+ bus->drv_cc.flash.pflash.window_size = 0x02000000;
if ((bcma_read32(bus->drv_cc.core, BCMA_CC_FLASH_CFG) &
BCMA_CC_FLASH_CFG_DS) == 0)
- bus->drv_cc.pflash.buswidth = 1;
+ bus->drv_cc.flash.pflash.buswidth = 1;
else
- bus->drv_cc.pflash.buswidth = 2;
+ bus->drv_cc.flash.pflash.buswidth = 2;
break;
default:
pr_err("flash not supported.\n");
--- a/include/linux/bcma/bcma_driver_chipcommon.h
+++ b/include/linux/bcma/bcma_driver_chipcommon.h
@@ -108,10 +108,68 @@
#define BCMA_CC_JCTL_EXT_EN 2 /* Enable external targets */
#define BCMA_CC_JCTL_EN 1 /* Enable Jtag master */
#define BCMA_CC_FLASHCTL 0x0040
+
+/* Start/busy bit in flashcontrol */
+#define BCMA_CC_FLASHCTL_OPCODE 0x000000ff
+#define BCMA_CC_FLASHCTL_ACTION 0x00000700
+#define BCMA_CC_FLASHCTL_CS_ACTIVE 0x00001000 /* Chip Select Active, rev >= 20 */
#define BCMA_CC_FLASHCTL_START 0x80000000
#define BCMA_CC_FLASHCTL_BUSY BCMA_CC_FLASHCTL_START
+
+/* flashcontrol action+opcodes for ST flashes */
+#define BCMA_CC_FLASHCTL_ST_WREN 0x0006 /* Write Enable */
+#define BCMA_CC_FLASHCTL_ST_WRDIS 0x0004 /* Write Disable */
+#define BCMA_CC_FLASHCTL_ST_RDSR 0x0105 /* Read Status Register */
+#define BCMA_CC_FLASHCTL_ST_WRSR 0x0101 /* Write Status Register */
+#define BCMA_CC_FLASHCTL_ST_READ 0x0303 /* Read Data Bytes */
+#define BCMA_CC_FLASHCTL_ST_PP 0x0302 /* Page Program */
+#define BCMA_CC_FLASHCTL_ST_SE 0x02d8 /* Sector Erase */
+#define BCMA_CC_FLASHCTL_ST_BE 0x00c7 /* Bulk Erase */
+#define BCMA_CC_FLASHCTL_ST_DP 0x00b9 /* Deep Power-down */
+#define BCMA_CC_FLASHCTL_ST_RES 0x03ab /* Read Electronic Signature */
+#define BCMA_CC_FLASHCTL_ST_CSA 0x1000 /* Keep chip select asserted */
+#define BCMA_CC_FLASHCTL_ST_SSE 0x0220 /* Sub-sector Erase */
+
+
+/* flashcontrol action+opcodes for Atmel flashes */
+#define BCMA_CC_FLASHCTL_AT_READ 0x07e8
+#define BCMA_CC_FLASHCTL_AT_PAGE_READ 0x07d2
+#define BCMA_CC_FLASHCTL_AT_BUF1_READ
+#define BCMA_CC_FLASHCTL_AT_BUF2_READ
+#define BCMA_CC_FLASHCTL_AT_STATUS 0x01d7
+#define BCMA_CC_FLASHCTL_AT_BUF1_WRITE 0x0384
+#define BCMA_CC_FLASHCTL_AT_BUF2_WRITE 0x0387
+#define BCMA_CC_FLASHCTL_AT_BUF1_ERASE_PROGRAM 0x0283
+#define BCMA_CC_FLASHCTL_AT_BUF2_ERASE_PROGRAM 0x0286
+#define BCMA_CC_FLASHCTL_AT_BUF1_PROGRAM 0x0288
+#define BCMA_CC_FLASHCTL_AT_BUF2_PROGRAM 0x0289
+#define BCMA_CC_FLASHCTL_AT_PAGE_ERASE 0x0281
+#define BCMA_CC_FLASHCTL_AT_BLOCK_ERASE 0x0250
+#define BCMA_CC_FLASHCTL_AT_BUF1_WRITE_ERASE_PROGRAM 0x0382
+#define BCMA_CC_FLASHCTL_AT_BUF2_WRITE_ERASE_PROGRAM 0x0385
+#define BCMA_CC_FLASHCTL_AT_BUF1_LOAD 0x0253
+#define BCMA_CC_FLASHCTL_AT_BUF2_LOAD 0x0255
+#define BCMA_CC_FLASHCTL_AT_BUF1_COMPARE 0x0260
+#define BCMA_CC_FLASHCTL_AT_BUF2_COMPARE 0x0261
+#define BCMA_CC_FLASHCTL_AT_BUF1_REPROGRAM 0x0258
+#define BCMA_CC_FLASHCTL_AT_BUF2_REPROGRAM 0x0259
+
#define BCMA_CC_FLASHADDR 0x0044
#define BCMA_CC_FLASHDATA 0x0048
+
+/* Status register bits for ST flashes */
+#define BCMA_CC_FLASHDATA_ST_WIP 0x01 /* Write In Progress */
+#define BCMA_CC_FLASHDATA_ST_WEL 0x02 /* Write Enable Latch */
+#define BCMA_CC_FLASHDATA_ST_BP_MASK 0x1c /* Block Protect */
+#define BCMA_CC_FLASHDATA_ST_BP_SHIFT 2
+#define BCMA_CC_FLASHDATA_ST_SRWD 0x80 /* Status Register Write Disable */
+
+/* Status register bits for Atmel flashes */
+#define BCMA_CC_FLASHDATA_AT_READY 0x80
+#define BCMA_CC_FLASHDATA_AT_MISMATCH 0x40
+#define BCMA_CC_FLASHDATA_AT_ID_MASK 0x38
+#define BCMA_CC_FLASHDATA_AT_ID_SHIFT 3
+
#define BCMA_CC_BCAST_ADDR 0x0050
#define BCMA_CC_BCAST_DATA 0x0054
#define BCMA_CC_GPIOPULLUP 0x0058 /* Rev >= 20 only */
@@ -283,6 +341,12 @@
#define BCMA_CC_PPL_PCHI_OFF 5
#define BCMA_CC_PPL_PCHI_MASK 0x0000003f
+#define BCMA_FLASH2 0x1c000000 /* Flash Region 2 (region 1 shadowed here) */
+#define BCMA_FLASH2_SZ 0x02000000 /* Size of Flash Region 2 */
+#define BCMA_FLASH1 0x1fc00000 /* MIPS Flash Region 1 */
+#define BCMA_FLASH1_SZ 0x00400000 /* MIPS Size of Flash Region 1 */
+
+
/* Data for the PMU, if available.
* Check availability with ((struct bcma_chipcommon)->capabilities & BCMA_CC_CAP_PMU)
*/
@@ -292,12 +356,20 @@ struct bcma_chipcommon_pmu {
};
#ifdef CONFIG_BCMA_DRIVER_MIPS
+enum bcma_flash_type {
+ BCMA_PFLASH,
+};
+
struct bcma_pflash {
u8 buswidth;
u32 window;
u32 window_size;
};
+union bcma_flash {
+ struct bcma_pflash pflash;
+};
+
struct bcma_serial_port {
void *regs;
unsigned long clockspeed;
@@ -317,7 +389,8 @@ struct bcma_drv_cc {
u16 fast_pwrup_delay;
struct bcma_chipcommon_pmu pmu;
#ifdef CONFIG_BCMA_DRIVER_MIPS
- struct bcma_pflash pflash;
+ enum bcma_flash_type flash_type;
+ union bcma_flash flash;
int nr_serial_ports;
struct bcma_serial_port serial_ports[4];
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