From: Gabor Juhos Date: Fri, 21 Sep 2007 19:00:45 +0000 (+0000) Subject: rename NAND driver X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=cc68bd353edd4ba33e0ddc8fa6f5b96737750bfb;p=openwrt%2Fstaging%2Fjow.git rename NAND driver SVN-Revision: 8932 --- diff --git a/target/linux/adm5120/files/drivers/mtd/nand/adm5120-nand.c b/target/linux/adm5120/files/drivers/mtd/nand/adm5120-nand.c new file mode 100644 index 0000000000..2e7059d186 --- /dev/null +++ b/target/linux/adm5120/files/drivers/mtd/nand/adm5120-nand.c @@ -0,0 +1,207 @@ +/*==============================================================================*/ +/* rbmipsnand.c */ +/* This module is derived from the 2.4 driver shipped by Microtik for their */ +/* Routerboard 1xx and 5xx series boards. It provides support for the built in */ +/* NAND flash on the Routerboard 1xx series boards for Linux 2.6.19+. */ +/* Licence: Original Microtik code seems not to have a licence. */ +/* Rewritten code all GPL V2. */ +/* Copyright(C) 2007 david.goodenough@linkchoose.co.uk (for rewriten code) */ +/*==============================================================================*/ + +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include +#include +#include + +#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 + +#define MEM32(x) *((volatile unsigned *) (x)) + +static struct mtd_partition partition_info[] = { + { + name: "RouterBoard NAND Boot", + offset: 0, + size: 4 * 1024 * 1024 + }, + { + name: "rootfs", + offset: MTDPART_OFS_NXTBLK, + size: MTDPART_SIZ_FULL + } +}; + +static struct nand_ecclayout rb_ecclayout = { + .eccbytes = 6, + .eccpos = { 8, 9, 10, 13, 14, 15 }, + .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 + unsigned int init_ok; +}; + +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. */ +/*========================================================================*/ + + +unsigned get_rbnand_block_size(struct adm5120_nand_info *data) +{ + return data->init_ok ? data->mtd.writesize : 0; +} + +EXPORT_SYMBOL(get_rbnand_block_size); + +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, pdev->resource[0].end - pdev->resource[0].start + 1); + + if (data->io_base == NULL) { + dev_err(&pdev->dev, "ioremap failed\n"); + kfree(data); + return -EIO; + } + + MEM32(0xB2000064) = 0x100; + MEM32(0xB2000008) = 0x1; + SMEM1(NAND_SET_SPn) = 0x01; + SMEM1(NAND_CLR_WPn) = 0x01; + + data->chip.priv = &data; + data->mtd.priv = &data->chip; + data->mtd.owner = THIS_MODULE; + + data->init_ok = 0; + 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"); + res = -ENXIO; + goto out; + } + + add_mtd_partitions(&data->mtd, partition_info, 2); + data->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; +} + +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/files/drivers/mtd/nand/rbmipsnand.c b/target/linux/adm5120/files/drivers/mtd/nand/rbmipsnand.c deleted file mode 100644 index 2e7059d186..0000000000 --- a/target/linux/adm5120/files/drivers/mtd/nand/rbmipsnand.c +++ /dev/null @@ -1,207 +0,0 @@ -/*==============================================================================*/ -/* rbmipsnand.c */ -/* This module is derived from the 2.4 driver shipped by Microtik for their */ -/* Routerboard 1xx and 5xx series boards. It provides support for the built in */ -/* NAND flash on the Routerboard 1xx series boards for Linux 2.6.19+. */ -/* Licence: Original Microtik code seems not to have a licence. */ -/* Rewritten code all GPL V2. */ -/* Copyright(C) 2007 david.goodenough@linkchoose.co.uk (for rewriten code) */ -/*==============================================================================*/ - -#include -#include -#include -#include -#include -#include -#include - -#include -#include -#include -#include -#include - -#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 - -#define MEM32(x) *((volatile unsigned *) (x)) - -static struct mtd_partition partition_info[] = { - { - name: "RouterBoard NAND Boot", - offset: 0, - size: 4 * 1024 * 1024 - }, - { - name: "rootfs", - offset: MTDPART_OFS_NXTBLK, - size: MTDPART_SIZ_FULL - } -}; - -static struct nand_ecclayout rb_ecclayout = { - .eccbytes = 6, - .eccpos = { 8, 9, 10, 13, 14, 15 }, - .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 - unsigned int init_ok; -}; - -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. */ -/*========================================================================*/ - - -unsigned get_rbnand_block_size(struct adm5120_nand_info *data) -{ - return data->init_ok ? data->mtd.writesize : 0; -} - -EXPORT_SYMBOL(get_rbnand_block_size); - -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, pdev->resource[0].end - pdev->resource[0].start + 1); - - if (data->io_base == NULL) { - dev_err(&pdev->dev, "ioremap failed\n"); - kfree(data); - return -EIO; - } - - MEM32(0xB2000064) = 0x100; - MEM32(0xB2000008) = 0x1; - SMEM1(NAND_SET_SPn) = 0x01; - SMEM1(NAND_CLR_WPn) = 0x01; - - data->chip.priv = &data; - data->mtd.priv = &data->chip; - data->mtd.owner = THIS_MODULE; - - data->init_ok = 0; - 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"); - res = -ENXIO; - goto out; - } - - add_mtd_partitions(&data->mtd, partition_info, 2); - data->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; -} - -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/patches-2.6.22/004-adm5120_nand.patch b/target/linux/adm5120/patches-2.6.22/004-adm5120_nand.patch index 79915e0281..5441fef415 100644 --- a/target/linux/adm5120/patches-2.6.22/004-adm5120_nand.patch +++ b/target/linux/adm5120/patches-2.6.22/004-adm5120_nand.patch @@ -2,15 +2,19 @@ Index: linux-2.6.22.1/drivers/mtd/nand/Kconfig =================================================================== --- linux-2.6.22.1.orig/drivers/mtd/nand/Kconfig +++ linux-2.6.22.1/drivers/mtd/nand/Kconfig -@@ -81,6 +81,12 @@ config MTD_NAND_TS7250 +@@ -81,6 +81,16 @@ config MTD_NAND_TS7250 help Support for NAND flash on Technologic Systems TS-7250 platform. -+config MTD_NAND_RB100 -+ tristate "NAND Flash device on RB100 board" -+ depends on MTD_NAND ++config MTD_NAND_ADM5120 ++ tristate "ADM5120 NAND support" ++ depends on MTD_NAND && MIPS_ADM5120 + help -+ Support for NAND flash on RB100 platform. ++ This enables the driver for the ADM5120 SoC built-in ++ NAND flash interface. ++ ++ No board specific support is done by this driver, each board ++ must advertise a platform_device for the driver to attach. + config MTD_NAND_IDS tristate @@ -23,7 +27,7 @@ Index: linux-2.6.22.1/drivers/mtd/nand/Makefile obj-$(CONFIG_MTD_NAND_SPIA) += spia.o obj-$(CONFIG_MTD_NAND_AMS_DELTA) += ams-delta.o obj-$(CONFIG_MTD_NAND_TOTO) += toto.o -+obj-$(CONFIG_MTD_NAND_RB100) += rbmipsnand.o ++obj-$(CONFIG_MTD_NAND_ADM5120) += adm5120-nand.o obj-$(CONFIG_MTD_NAND_AUTCPU12) += autcpu12.o obj-$(CONFIG_MTD_NAND_EDB7312) += edb7312.o obj-$(CONFIG_MTD_NAND_AU1550) += au1550nd.o diff --git a/target/linux/adm5120/router_le/config-2.6.22 b/target/linux/adm5120/router_le/config-2.6.22 index c07570c733..3a88bed997 100644 --- a/target/linux/adm5120/router_le/config-2.6.22 +++ b/target/linux/adm5120/router_le/config-2.6.22 @@ -163,7 +163,7 @@ CONFIG_MTD_NAND_IDS=y # CONFIG_MTD_NAND_MUSEUM_IDS is not set # CONFIG_MTD_NAND_NANDSIM is not set # CONFIG_MTD_NAND_PLATFORM is not set -CONFIG_MTD_NAND_RB100=y +CONFIG_MTD_NAND_ADM5120=y # CONFIG_MTD_NAND_VERIFY_WRITE is not set # CONFIG_MTD_ONENAND is not set CONFIG_MTD_PARTITIONS=y