mn10300: add platform MTD support for the ASB2303 board (daeb51e6) · Commits · e / devices / android_kernel_oneplus_sm8150

arch/mn10300/configs/asb2303_defconfig

+4 −1

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		@@ -282,7 +282,10 @@ CONFIG_MTD_CFI_UTIL=y
		# Mapping drivers for chip access
		#
		# CONFIG_MTD_COMPLEX_MAPPINGS is not set
		# CONFIG_MTD_PHYSMAP is not set
		CONFIG_MTD_PHYSMAP=y
		CONFIG_MTD_PHYSMAP_START=0x8000000
		CONFIG_MTD_PHYSMAP_LEN=0x0
		CONFIG_MTD_PHYSMAP_BANKWIDTH=2
		# CONFIG_MTD_PLATRAM is not set

		#

arch/mn10300/unit-asb2303/Makefile

+1 −1

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		@@ -3,4 +3,4 @@
		# Makefile for the ASB2303 board
		#
		###############################################################################
		obj-y := unit-init.o smc91111.o leds.o
		obj-y := unit-init.o smc91111.o flash.o leds.o

arch/mn10300/unit-asb2303/flash.c

0 → 100644

+100 −0

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		/* Handle mapping of the flash on the ASB2303 board
		*
		* Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
		* Written by David Howells (dhowells@redhat.com)
		*
		* This program is free software; you can redistribute it and/or
		* modify it under the terms of the GNU General Public Licence
		* as published by the Free Software Foundation; either version
		* 2 of the Licence, or (at your option) any later version.
		*/
		#include <linux/init.h>
		#include <linux/platform_device.h>
		#include <linux/mtd/partitions.h>
		#include <linux/mtd/physmap.h>

		#define ASB2303_PROM_ADDR 0xA0000000 /* Boot PROM */
		#define ASB2303_PROM_SIZE (2 * 1024 * 1024)
		#define ASB2303_FLASH_ADDR 0xA4000000 /* System Flash */
		#define ASB2303_FLASH_SIZE (32 * 1024 * 1024)
		#define ASB2303_CONFIG_ADDR 0xA6000000 /* System Config EEPROM */
		#define ASB2303_CONFIG_SIZE (8 * 1024)

		/*
		* default MTD partition table for both main flash devices, expected to be
		* overridden by RedBoot
		*/
		static struct mtd_partition asb2303_partitions[] = {
		{
		.name = "Bootloader",
		.size = 0x00040000,
		.offset = 0,
		.mask_flags = MTD_CAP_ROM /* force read-only */
		}, {
		.name = "Kernel",
		.size = 0x00400000,
		.offset = 0x00040000,
		}, {
		.name = "Filesystem",
		.size = MTDPART_SIZ_FULL,
		.offset = 0x00440000
		}
		};

		/*
		* the ASB2303 Boot PROM definition
		*/
		static struct physmap_flash_data asb2303_bootprom_data = {
		.width = 2,
		.nr_parts = 1,
		.parts = asb2303_partitions,
		};

		static struct resource asb2303_bootprom_resource = {
		.start = ASB2303_PROM_ADDR,
		.end = ASB2303_PROM_ADDR + ASB2303_PROM_SIZE,
		.flags = IORESOURCE_MEM,
		};

		static struct platform_device asb2303_bootprom = {
		.name = "physmap-flash",
		.id = 0,
		.dev.platform_data = &asb2303_bootprom_data,
		.num_resources = 1,
		.resource = &asb2303_bootprom_resource,
		};

		/*
		* the ASB2303 System Flash definition
		*/
		static struct physmap_flash_data asb2303_sysflash_data = {
		.width = 4,
		.nr_parts = 1,
		.parts = asb2303_partitions,
		};

		static struct resource asb2303_sysflash_resource = {
		.start = ASB2303_FLASH_ADDR,
		.end = ASB2303_FLASH_ADDR + ASB2303_FLASH_SIZE,
		.flags = IORESOURCE_MEM,
		};

		static struct platform_device asb2303_sysflash = {
		.name = "physmap-flash",
		.id = 1,
		.dev.platform_data = &asb2303_sysflash_data,
		.num_resources = 1,
		.resource = &asb2303_sysflash_resource,
		};

		/*
		* register the ASB2303 flashes
		*/
		static int __init asb2303_mtd_init(void)
		{
		platform_device_register(&asb2303_bootprom);
		platform_device_register(&asb2303_sysflash);
		return 0;
		}

		module_init(asb2303_mtd_init);