diff options
Diffstat (limited to 'arch/mips/netlogic/xlr/platform-flash.c')
| -rw-r--r-- | arch/mips/netlogic/xlr/platform-flash.c | 216 |
1 files changed, 0 insertions, 216 deletions
diff --git a/arch/mips/netlogic/xlr/platform-flash.c b/arch/mips/netlogic/xlr/platform-flash.c deleted file mode 100644 index cf9162284b07..000000000000 --- a/arch/mips/netlogic/xlr/platform-flash.c +++ /dev/null @@ -1,216 +0,0 @@ -/* - * Copyright 2011, Netlogic Microsystems. - * Copyright 2004, Matt Porter <mporter@kernel.crashing.org> - * - * This file is licensed under the terms of the GNU General Public - * License version 2. This program is licensed "as is" without any - * warranty of any kind, whether express or implied. - */ - -#include <linux/device.h> -#include <linux/platform_device.h> -#include <linux/kernel.h> -#include <linux/init.h> -#include <linux/io.h> -#include <linux/delay.h> -#include <linux/ioport.h> -#include <linux/resource.h> -#include <linux/spi/flash.h> - -#include <linux/mtd/mtd.h> -#include <linux/mtd/physmap.h> -#include <linux/mtd/platnand.h> - -#include <asm/netlogic/haldefs.h> -#include <asm/netlogic/xlr/iomap.h> -#include <asm/netlogic/xlr/flash.h> -#include <asm/netlogic/xlr/bridge.h> -#include <asm/netlogic/xlr/gpio.h> -#include <asm/netlogic/xlr/xlr.h> - -/* - * Default NOR partition layout - */ -static struct mtd_partition xlr_nor_parts[] = { - { - .name = "User FS", - .offset = 0x800000, - .size = MTDPART_SIZ_FULL, - } -}; - -/* - * Default NAND partition layout - */ -static struct mtd_partition xlr_nand_parts[] = { - { - .name = "Root Filesystem", - .offset = 64 * 64 * 2048, - .size = 432 * 64 * 2048, - }, - { - .name = "Home Filesystem", - .offset = MTDPART_OFS_APPEND, - .size = MTDPART_SIZ_FULL, - }, -}; - -/* Use PHYSMAP flash for NOR */ -struct physmap_flash_data xlr_nor_data = { - .width = 2, - .parts = xlr_nor_parts, - .nr_parts = ARRAY_SIZE(xlr_nor_parts), -}; - -static struct resource xlr_nor_res[] = { - { - .flags = IORESOURCE_MEM, - }, -}; - -static struct platform_device xlr_nor_dev = { - .name = "physmap-flash", - .dev = { - .platform_data = &xlr_nor_data, - }, - .num_resources = ARRAY_SIZE(xlr_nor_res), - .resource = xlr_nor_res, -}; - -/* - * Use "gen_nand" driver for NAND flash - * - * There seems to be no way to store a private pointer containing - * platform specific info in gen_nand drivier. We will use a global - * struct for now, since we currently have only one NAND chip per board. - */ -struct xlr_nand_flash_priv { - int cs; - uint64_t flash_mmio; -}; - -static struct xlr_nand_flash_priv nand_priv; - -static void xlr_nand_ctrl(struct nand_chip *chip, int cmd, - unsigned int ctrl) -{ - if (ctrl & NAND_CLE) - nlm_write_reg(nand_priv.flash_mmio, - FLASH_NAND_CLE(nand_priv.cs), cmd); - else if (ctrl & NAND_ALE) - nlm_write_reg(nand_priv.flash_mmio, - FLASH_NAND_ALE(nand_priv.cs), cmd); -} - -struct platform_nand_data xlr_nand_data = { - .chip = { - .nr_chips = 1, - .nr_partitions = ARRAY_SIZE(xlr_nand_parts), - .chip_delay = 50, - .partitions = xlr_nand_parts, - }, - .ctrl = { - .cmd_ctrl = xlr_nand_ctrl, - }, -}; - -static struct resource xlr_nand_res[] = { - { - .flags = IORESOURCE_MEM, - }, -}; - -static struct platform_device xlr_nand_dev = { - .name = "gen_nand", - .id = -1, - .num_resources = ARRAY_SIZE(xlr_nand_res), - .resource = xlr_nand_res, - .dev = { - .platform_data = &xlr_nand_data, - } -}; - -/* - * XLR/XLS supports upto 8 devices on its FLASH interface. The value in - * FLASH_BAR (on the MEM/IO bridge) gives the base for mapping all the - * flash devices. - * Under this, each flash device has an offset and size given by the - * CSBASE_ADDR and CSBASE_MASK registers for the device. - * - * The CSBASE_ registers are expected to be setup by the bootloader. - */ -static void setup_flash_resource(uint64_t flash_mmio, - uint64_t flash_map_base, int cs, struct resource *res) -{ - u32 base, mask; - - base = nlm_read_reg(flash_mmio, FLASH_CSBASE_ADDR(cs)); - mask = nlm_read_reg(flash_mmio, FLASH_CSADDR_MASK(cs)); - - res->start = flash_map_base + ((unsigned long)base << 16); - res->end = res->start + (mask + 1) * 64 * 1024; -} - -static int __init xlr_flash_init(void) -{ - uint64_t gpio_mmio, flash_mmio, flash_map_base; - u32 gpio_resetcfg, flash_bar; - int cs, boot_nand, boot_nor; - - /* Flash address bits 39:24 is in bridge flash BAR */ - flash_bar = nlm_read_reg(nlm_io_base, BRIDGE_FLASH_BAR); - flash_map_base = (flash_bar & 0xffff0000) << 8; - - gpio_mmio = nlm_mmio_base(NETLOGIC_IO_GPIO_OFFSET); - flash_mmio = nlm_mmio_base(NETLOGIC_IO_FLASH_OFFSET); - - /* Get the chip reset config */ - gpio_resetcfg = nlm_read_reg(gpio_mmio, GPIO_PWRON_RESET_CFG_REG); - - /* Check for boot flash type */ - boot_nor = boot_nand = 0; - if (nlm_chip_is_xls()) { - /* On XLS, check boot from NAND bit (GPIO reset reg bit 16) */ - if (gpio_resetcfg & (1 << 16)) - boot_nand = 1; - - /* check boot from PCMCIA, (GPIO reset reg bit 15 */ - if ((gpio_resetcfg & (1 << 15)) == 0) - boot_nor = 1; /* not set, booted from NOR */ - } else { /* XLR */ - /* check boot from PCMCIA (bit 16 in GPIO reset on XLR) */ - if ((gpio_resetcfg & (1 << 16)) == 0) - boot_nor = 1; /* not set, booted from NOR */ - } - - /* boot flash at chip select 0 */ - cs = 0; - - if (boot_nand) { - nand_priv.cs = cs; - nand_priv.flash_mmio = flash_mmio; - setup_flash_resource(flash_mmio, flash_map_base, cs, - xlr_nand_res); - - /* Initialize NAND flash at CS 0 */ - nlm_write_reg(flash_mmio, FLASH_CSDEV_PARM(cs), - FLASH_NAND_CSDEV_PARAM); - nlm_write_reg(flash_mmio, FLASH_CSTIME_PARMA(cs), - FLASH_NAND_CSTIME_PARAMA); - nlm_write_reg(flash_mmio, FLASH_CSTIME_PARMB(cs), - FLASH_NAND_CSTIME_PARAMB); - - pr_info("ChipSelect %d: NAND Flash %pR\n", cs, xlr_nand_res); - return platform_device_register(&xlr_nand_dev); - } - - if (boot_nor) { - setup_flash_resource(flash_mmio, flash_map_base, cs, - xlr_nor_res); - pr_info("ChipSelect %d: NOR Flash %pR\n", cs, xlr_nor_res); - return platform_device_register(&xlr_nor_dev); - } - return 0; -} - -arch_initcall(xlr_flash_init); |