diff options
Diffstat (limited to 'target/linux/rb1xx-2.6/files/drivers/mtd/nand/rbmipsnand.c')
| -rw-r--r-- | target/linux/rb1xx-2.6/files/drivers/mtd/nand/rbmipsnand.c | 196 |
1 files changed, 0 insertions, 196 deletions
diff --git a/target/linux/rb1xx-2.6/files/drivers/mtd/nand/rbmipsnand.c b/target/linux/rb1xx-2.6/files/drivers/mtd/nand/rbmipsnand.c deleted file mode 100644 index 9d6588acf..000000000 --- a/target/linux/rb1xx-2.6/files/drivers/mtd/nand/rbmipsnand.c +++ /dev/null @@ -1,196 +0,0 @@ -#include <linux/init.h> -#include <linux/mtd/nand.h> -#include <linux/mtd/mtd.h> -#include <linux/mtd/partitions.h> -#include <linux/delay.h> -#include <asm/io.h> -#include <asm/irq.h> -#include <asm/bootinfo.h> -#ifdef CONFIG_MIPS_ADM5120 -#include <asm/mach-adm5120/adm5120_defs.h> -#endif - -#define IDT434_REG_BASE ((volatile void *) KSEG1ADDR(0x18000000)) - -#define GPIOF 0x050000 -#define GPIOC 0x050004 -#define GPIOD 0x050008 - -#define GPIO_RDY (1 << 0x08) -#define GPIO_WPX (1 << 0x09) -#define GPIO_ALE (1 << 0x0a) -#define GPIO_CLE (1 << 0x0b) - -#define DEV2BASE 0x010020 - -#define LO_WPX (1 << 0) -#define LO_ALE (1 << 1) -#define LO_CLE (1 << 2) -#define LO_CEX (1 << 3) -#define LO_FOFF (1 << 5) -#define LO_SPICS (1 << 6) -#define LO_ULED (1 << 7) - -#define MEM32(x) *((volatile unsigned *) (x)) - - -/* RouterBoard RB1xx specific definitions */ -#define SMEM1(x) (*((volatile unsigned char *) (KSEG1ADDR(ADM5120_SRAM1_BASE) + x))) - -#define NAND_RW_REG 0x0 //data register -#define NAND_SET_CEn 0x1 //CE# low -#define NAND_CLR_CEn 0x2 //CE# high -#define NAND_CLR_CLE 0x3 //CLE low -#define NAND_SET_CLE 0x4 //CLE high -#define NAND_CLR_ALE 0x5 //ALE low -#define NAND_SET_ALE 0x6 //ALE high -#define NAND_SET_SPn 0x7 //SP# low (use spare area) -#define NAND_CLR_SPn 0x8 //SP# high (do not use spare area) -#define NAND_SET_WPn 0x9 //WP# low -#define NAND_CLR_WPn 0xA //WP# high -#define NAND_STS_REG 0xB //Status register - -static void __iomem *p_nand; - -#ifdef CONFIG_MIKROTIK_RB500 -extern void changeLatchU5(unsigned char orMask, unsigned char nandMask); - -static int rb500_dev_ready(struct mtd_info *mtd) -{ - return MEM32(IDT434_REG_BASE + GPIOD) & GPIO_RDY; -} - -/* - * hardware specific access to control-lines - * - * ctrl: - * NAND_CLE: bit 2 -> bit 3 - * NAND_ALE: bit 3 -> bit 2 - */ -static void rbmips_hwcontrol500(struct mtd_info *mtd, int cmd, - unsigned int ctrl) -{ - struct nand_chip *chip = mtd->priv; - unsigned char orbits, nandbits; - - if (ctrl & NAND_CTRL_CHANGE) { - - orbits = (ctrl & NAND_CLE) << 1; - orbits |= (ctrl & NAND_ALE) >> 1; - - nandbits = (~ctrl & NAND_CLE) << 1; - nandbits |= (~ctrl & NAND_ALE) >> 1; - - changeLatchU5(orbits, nandbits); - } - if (cmd != NAND_CMD_NONE) - writeb(cmd, chip->IO_ADDR_W); - -} -#endif - -#ifdef CONFIG_MIPS_ADM5120 -static int rb100_dev_ready(struct mtd_info *mtd) -{ - return SMEM1(NAND_STS_REG) & 0x80; /* found out by experiment */ -} - -static void rbmips_hwcontrol100(struct mtd_info *mtd, int cmd, unsigned int ctrl) -{ - struct nand_chip *chip = mtd->priv; - - if (ctrl & NAND_CTRL_CHANGE) - SMEM1(ctrl) = 0x01; - if (cmd != NAND_CMD_NONE) - writeb(cmd, chip->IO_ADDR_W); -} -#endif - - -static struct mtd_partition partition_info[] = { - { - name:"RouterBoard NAND Boot", - offset:0, - size:4 * 1024 * 1024}, - { - name:"RouterBoard NAND Main", - offset:MTDPART_OFS_NXTBLK, - size:MTDPART_SIZ_FULL} -}; - -static struct mtd_info rmtd; -static struct nand_chip rnand; - -static unsigned init_ok = 0; - -unsigned get_rbnand_block_size(void) -{ - if (init_ok) - return rmtd.writesize; - else - return 0; -} - -EXPORT_SYMBOL(get_rbnand_block_size); - -int __init rbmips_init(void) -{ - memset(&rmtd, 0, sizeof(rmtd)); - memset(&rnand, 0, sizeof(rnand)); - -#ifdef CONFIG_MIKROTIK_RB500 - printk("RB500 nand\n"); - changeLatchU5(LO_WPX | LO_FOFF | LO_CEX, - LO_ULED | LO_ALE | LO_CLE); - rnand.cmd_ctrl = rbmips_hwcontrol500; - - rnand.dev_ready = rb500_dev_ready; - rnand.IO_ADDR_W = (unsigned char *) - KSEG1ADDR(MEM32(IDT434_REG_BASE + DEV2BASE)); - rnand.IO_ADDR_R = rnand.IO_ADDR_W; -#endif - -#ifdef CONFIG_MIPS_ADM5120 - printk("RB100 nand\n"); - /* enable NAND flash */ - MEM32(0xB2000064) = 0x100; - /* boot done */ - MEM32(0xB2000008) = 0x1; - SMEM1(NAND_SET_SPn) = 0x01; - SMEM1(NAND_CLR_WPn) = 0x01; - rnand.IO_ADDR_R = (unsigned char *)KSEG1ADDR(ADM5120_SRAM1_BASE); - rnand.IO_ADDR_W = rnand.IO_ADDR_R; - rnand.cmd_ctrl = rbmips_hwcontrol100; - rnand.dev_ready = rb100_dev_ready; -#endif - p_nand = (void __iomem *) ioremap((void *) 0x18a20000, 0x1000); - if (!p_nand) { - printk("RBnand Unable ioremap buffer"); - return -ENXIO; - } - rnand.ecc.mode = NAND_ECC_SOFT; - rnand.chip_delay = 25; - rnand.options |= NAND_NO_AUTOINCR; - rmtd.priv = &rnand; - -#ifdef CONFIG_MIKROTIK_RB500 - int *b; - - b = (int *) KSEG1ADDR(0x18010020); - printk("dev2base 0x%08x mask 0x%08x c 0x%08x tc 0x%08x\n", b[0], - b[1], b[2], b[3]); -#endif - - if (nand_scan(&rmtd, 1) && nand_scan(&rmtd, 1) - && nand_scan(&rmtd, 1) && nand_scan(&rmtd, 1)) { - printk("RBxxx nand device not found"); - iounmap((void *) p_nand); - return -ENXIO; - } - - add_mtd_partitions(&rmtd, partition_info, 2); - init_ok = 1; - return 0; -} - -module_init(rbmips_init); |