diff options
Diffstat (limited to 'target/linux/adm5120-2.6')
4 files changed, 162 insertions, 56 deletions
diff --git a/target/linux/adm5120-2.6/files/arch/mips/adm5120/boards/mikrotik.c b/target/linux/adm5120-2.6/files/arch/mips/adm5120/boards/mikrotik.c index 7ced1f196c..fccb284d6c 100644 --- a/target/linux/adm5120-2.6/files/arch/mips/adm5120/boards/mikrotik.c +++ b/target/linux/adm5120-2.6/files/arch/mips/adm5120/boards/mikrotik.c @@ -47,6 +47,7 @@ static struct mtd_partition rb1xx_partitions[] = { static struct platform_device *rb1xx_devices[] __initdata = { &adm5120_flash0_device, + &adm5120_nand_device, }; static void __init rb1xx_setup(void) diff --git a/target/linux/adm5120-2.6/files/arch/mips/adm5120/platform.c b/target/linux/adm5120-2.6/files/arch/mips/adm5120/platform.c index 8fd89ae7c7..44598825d9 100644 --- a/target/linux/adm5120-2.6/files/arch/mips/adm5120/platform.c +++ b/target/linux/adm5120-2.6/files/arch/mips/adm5120/platform.c @@ -109,3 +109,22 @@ struct platform_device adm5120_flash1_device = { .id = 1, .dev.platform_data = &adm5120_flash1_data, }; + +/* NAND flash */ +struct resource adm5120_nand_resource[] = { + [0] = { + .start = ADM5120_SRAM1_BASE, + .end = ADM5120_SRAM1_BASE+0x1000-1, + .flags = IORESOURCE_MEM, + }, +}; + +struct adm5120_nand_platform_data adm5120_nand_data; + +struct platform_device adm5120_nand_device = { + .name = "adm5120-nand", + .id = -1, + .dev.platform_data = &adm5120_nand_data, + .num_resources = ARRAY_SIZE(adm5120_nand_resource), + .resource = adm5120_nand_resource, +}; diff --git a/target/linux/adm5120-2.6/files/drivers/mtd/nand/rbmipsnand.c b/target/linux/adm5120-2.6/files/drivers/mtd/nand/rbmipsnand.c index 5b98833c06..9e6ae1b577 100644 --- a/target/linux/adm5120-2.6/files/drivers/mtd/nand/rbmipsnand.c +++ b/target/linux/adm5120-2.6/files/drivers/mtd/nand/rbmipsnand.c @@ -8,7 +8,9 @@ /* Copyright(C) 2007 david.goodenough@linkchoose.co.uk (for rewriten code) */ /*==============================================================================*/ -#include <linux/init.h> +#include <linux/io.h> +#include <linux/module.h> +#include <linux/platform_device.h> #include <linux/mtd/nand.h> #include <linux/mtd/mtd.h> #include <linux/mtd/partitions.h> @@ -36,93 +38,169 @@ #define NAND_STS_REG 0xB //Status register #define MEM32(x) *((volatile unsigned *) (x)) -static void __iomem *p_nand; - -static int rb100_dev_ready(struct mtd_info *mtd) { - return SMEM1(NAND_STS_REG) & 0x80; -} - -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 & NAND_CLE) ? NAND_SET_CLE : NAND_CLR_CLE)) = 0x01; - SMEM1((( ctrl & NAND_ALE) ? NAND_SET_ALE : NAND_CLR_ALE)) = 0x01; - SMEM1((( ctrl & NAND_NCE) ? NAND_SET_CEn : NAND_CLR_CEn)) = 0x01; - } - if( cmd != NAND_CMD_NONE) - writeb( cmd, chip->IO_ADDR_W); -} static struct mtd_partition partition_info[] = { { name: "RouterBoard NAND Boot", offset: 0, - size: 4 * 1024 * 1024 + size: 4 * 1024 * 1024 }, { name: "rootfs", - offset: MTDPART_OFS_NXTBLK, - size: MTDPART_SIZ_FULL + offset: MTDPART_OFS_NXTBLK, + size: MTDPART_SIZ_FULL } }; -static struct mtd_info rmtd; -static struct nand_chip rnand; -/*========================================================================*/ -/* We need to use the OLD Yaffs-1 OOB layout, otherwise the RB bootloader */ -/* will not be able to find the kernel that we load. So set the oobinfo */ -/* when creating the partitions. */ -/*========================================================================*/ static struct nand_ecclayout rb_ecclayout = { .eccbytes = 6, .eccpos = { 8, 9, 10, 13, 14, 15 }, - .oobavail = 9, + .oobavail = 9, .oobfree = { { 0, 4 }, { 6, 2 }, { 11, 2 }, { 4, 1} } }; + +struct adm5120_nand_info { + struct nand_chip chip; + struct mtd_info mtd; + void __iomem *io_base; +#ifdef CONFIG_MTD_PARTITIONS + int nr_parts; + struct mtd_partition *parts; +#endif +}; + +static int rb100_dev_ready(struct mtd_info *mtd) +{ + return SMEM1(NAND_STS_REG) & 0x80; +} + +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 & NAND_CLE) ? NAND_SET_CLE : NAND_CLR_CLE)) = 0x01; + SMEM1((( ctrl & NAND_ALE) ? NAND_SET_ALE : NAND_CLR_ALE)) = 0x01; + SMEM1((( ctrl & NAND_NCE) ? NAND_SET_CEn : NAND_CLR_CEn)) = 0x01; + } + if (cmd != NAND_CMD_NONE) + writeb( cmd, chip->IO_ADDR_W); +} + +/*========================================================================*/ +/* We need to use the OLD Yaffs-1 OOB layout, otherwise the RB bootloader */ +/* will not be able to find the kernel that we load. So set the oobinfo */ +/* when creating the partitions. */ +/*========================================================================*/ + static unsigned init_ok = 0; -unsigned get_rbnand_block_size(void) { - return init_ok ? rmtd.writesize : 0; +unsigned get_rbnand_block_size(struct adm5120_nand_info *data) +{ + return init_ok ? data->mtd.writesize : 0; } EXPORT_SYMBOL(get_rbnand_block_size); -int __init rbmips_init(void) { +static int rbmips_probe(struct platform_device *pdev) +{ + struct adm5120_nand_info *data; + int res = 0; + + /* Allocate memory for the nand_chip structure */ + data = kzalloc(sizeof(*data), GFP_KERNEL); + if (!data) { + dev_err(&pdev->dev, "Failed to allocate device structure\n"); + return -ENOMEM; + + } + + data->io_base = ioremap(pdev->resource[0].start, 0x1000); - if (!adm5120_nand_boot) - return -ENODEV; + if (data->io_base == NULL) { + dev_err(&pdev->dev, "ioremap failed\n"); + kfree(data); + return -EIO; + } - memset(&rmtd, 0, sizeof(rmtd)); - memset(&rnand, 0, sizeof(rnand)); - printk(KERN_INFO "RB1xx nand\n"); MEM32(0xB2000064) = 0x100; 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; - p_nand = (void __iomem *)ioremap(( unsigned long)ADM5120_SRAM1_BASE, 0x1000); - if (!p_nand) { - printk(KERN_WARNING "RB1xx nand Unable ioremap buffer\n"); - return -ENXIO; - } - rnand.ecc.mode = NAND_ECC_SOFT; - rnand.ecc.layout = &rb_ecclayout; - rnand.chip_delay = 25; - rnand.options |= NAND_NO_AUTOINCR; - rmtd.priv = &rnand; - if (nand_scan(&rmtd, 1) && nand_scan(&rmtd, 1) - && nand_scan(&rmtd, 1) && nand_scan(&rmtd, 1)) { + + data->chip.priv = &data; + data->mtd.priv = &data->chip; + data->mtd.owner = THIS_MODULE; + + data->chip.IO_ADDR_R = (unsigned char *)KSEG1ADDR(ADM5120_SRAM1_BASE); + data->chip.IO_ADDR_W = data->chip.IO_ADDR_R; + data->chip.cmd_ctrl = rbmips_hwcontrol100; + data->chip.dev_ready = rb100_dev_ready; + data->chip.ecc.mode = NAND_ECC_SOFT; + data->chip.ecc.layout = &rb_ecclayout; + data->chip.chip_delay = 25; + data->chip.options |= NAND_NO_AUTOINCR; + + platform_set_drvdata(pdev, data); + + /* Why do we need to scan 4 times ? */ + if (nand_scan(&data->mtd, 1) && nand_scan(&data->mtd, 1) && nand_scan(&data->mtd, 1) && nand_scan(&data->mtd, 1)) { printk(KERN_INFO "RB1xxx nand device not found\n"); - iounmap ((void *)p_nand); - return -ENXIO; + res = -ENXIO; + goto out; } - add_mtd_partitions(&rmtd, partition_info, 2); + + add_mtd_partitions(&data->mtd, partition_info, 2); init_ok = 1; + + res = add_mtd_device(&data->mtd); + if (!res) + return res; + + nand_release(&data->mtd); +out: + platform_set_drvdata(pdev, NULL); + iounmap(data->io_base); + kfree(data); + return res; +} + +static int __devexit rbmips_remove(struct platform_device *pdev) +{ + struct adm5120_nand_info *data = platform_get_drvdata(pdev); + + nand_release(&data->mtd); + iounmap(data->io_base); + kfree(data); + return 0; } -module_init(rbmips_init); +static struct platform_driver adm5120_nand_driver = { + .probe = rbmips_probe, + .remove = rbmips_remove, + .driver = { + .name = "adm5120-nand", + .owner = THIS_MODULE, + }, +}; + +static int __init adm5120_nand_init(void) +{ + int err; + err = platform_driver_register(&adm5120_nand_driver); + return err; +} + +static void __exit adm5120_nand_exit(void) +{ + platform_driver_unregister(&adm5120_nand_driver); +} + +module_init(adm5120_nand_init); +module_exit(adm5120_nand_exit); + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("David Goodenough, Florian Fainelli"); +MODULE_DESCRIPTION("RouterBOARD 100 NAND driver"); diff --git a/target/linux/adm5120-2.6/files/include/asm-mips/mach-adm5120/adm5120_platform.h b/target/linux/adm5120-2.6/files/include/asm-mips/mach-adm5120/adm5120_platform.h index b9822983c7..e63611912a 100644 --- a/target/linux/adm5120-2.6/files/include/asm-mips/mach-adm5120/adm5120_platform.h +++ b/target/linux/adm5120-2.6/files/include/asm-mips/mach-adm5120/adm5120_platform.h @@ -32,8 +32,14 @@ struct adm5120_flash_platform_data { void (*set_vpp)(struct map_info *, int); void (*switch_bank)(unsigned); +#ifdef CONFIG_MTD_PARTITIONS unsigned int nr_parts; struct mtd_partition *parts; +#endif +}; + +struct adm5120_nand_platform_data { + /* TODO : not yet implemented */ }; struct adm5120_switch_platform_data { @@ -54,11 +60,13 @@ struct adm5120_pci_platform_data { extern struct adm5120_flash_platform_data adm5120_flash0_data; extern struct adm5120_flash_platform_data adm5120_flash1_data; +extern struct adm5120_nand_platform_data adm5120_nand_data; extern struct adm5120_pci_platform_data adm5120_pci_data; extern struct adm5120_switch_platform_data adm5120_switch_data; extern struct platform_device adm5120_flash0_device; extern struct platform_device adm5120_flash1_device; +extern struct platform_device adm5120_nand_device; extern struct platform_device adm5120_usbc_device; extern struct platform_device adm5120_pci_device; extern struct platform_device adm5120_switch_device; |