diff options
Diffstat (limited to 'target/linux/ar7/files-3.9/drivers/mtd')
| -rw-r--r-- | target/linux/ar7/files-3.9/drivers/mtd/ac49xpart.c | 220 | ||||
| -rw-r--r-- | target/linux/ar7/files-3.9/drivers/mtd/titanpart.c | 234 |
2 files changed, 454 insertions, 0 deletions
diff --git a/target/linux/ar7/files-3.9/drivers/mtd/ac49xpart.c b/target/linux/ar7/files-3.9/drivers/mtd/ac49xpart.c new file mode 100644 index 000000000..1f937f0f7 --- /dev/null +++ b/target/linux/ar7/files-3.9/drivers/mtd/ac49xpart.c @@ -0,0 +1,220 @@ +/* + * AudioCodes AC49x PSPBoot-based flash partition table + * Copyright 2012 Daniel Golle <daniel.golle@gmail.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + * + */ + +#include <linux/kernel.h> +#include <linux/slab.h> + +#include <linux/mtd/mtd.h> +#include <linux/mtd/partitions.h> +#include <linux/bootmem.h> +#include <linux/magic.h> +#include <linux/module.h> + +#include <asm/mach-ar7/prom.h> + +#define AC49X_MAXENVPARTS 8 + +#define AC49X_PARTTYPE_LOADER 0 +#define AC49X_PARTTYPE_BOOTENV 1 +#define AC49X_PARTTYPE_LINUX 2 +#define AC49X_PARTTYPE_ROOTFS 3 +#define AC49X_PARTTYPE_UNKNOWN 4 +#define AC49X_NUM_PARTTYPES 5 + +#define AC49X_FLASH_ADDRMASK 0x00FFFFFF + +#define AC49X_LOADER_MAGIC 0x40809000 +#define AC49X_LINUX_MAGIC 0x464c457f /* ELF */ +#define AC49X_BOOTENV_MAGIC 0x4578614d /* MaxE */ + +#define ROOTFS_MIN_OFFSET 0xC0000 + +int parse_partvar(const unsigned char *partvar, struct mtd_partition *part) +{ + unsigned int partstart, partend; + unsigned int pnum; + + pnum = sscanf(partvar, "0x%x,0x%x", &partstart, &partend); + if (pnum != 2) + return 1; + + part->offset = partstart & AC49X_FLASH_ADDRMASK; + part->size = partend - partstart; + + return 0; +} + +int detect_parttype(struct mtd_info *master, struct mtd_partition part) +{ + unsigned int magic; + size_t len; + + if (part.size < 4) + return -1; + + mtd_read(master, part.offset, sizeof(magic), &len, + (uint8_t *)&magic); + + if (len != sizeof(magic)) + return -1; + + switch (magic) { + case AC49X_LOADER_MAGIC: + return AC49X_PARTTYPE_LOADER; + case AC49X_LINUX_MAGIC: + return AC49X_PARTTYPE_LINUX; + case SQUASHFS_MAGIC: + case CRAMFS_MAGIC: + case CRAMFS_MAGIC_WEND: + return AC49X_PARTTYPE_ROOTFS; + case AC49X_BOOTENV_MAGIC: + return AC49X_PARTTYPE_BOOTENV; + default: + switch (magic & 0xFF) { + case JFFS2_SUPER_MAGIC: + return AC49X_PARTTYPE_ROOTFS; + } + switch (magic >> 8) { + case JFFS2_SUPER_MAGIC: + return AC49X_PARTTYPE_ROOTFS; + } + return AC49X_PARTTYPE_UNKNOWN; + } +} + +const char *partnames[] = { + "loader", + "config", + "linux", + "rootfs", + "data" +}; + +void gen_partname(unsigned int type, + unsigned int *typenumeration, + struct mtd_partition *part) +{ + char *s = kzalloc(sizeof(char) * 8, GFP_KERNEL); + + (typenumeration[type])++; + if (typenumeration[type] == 1) + sprintf(s, "%s", partnames[type]); + else + sprintf(s, "%s%d", partnames[type], typenumeration[type]); + + part->name = s; +} + +static int create_mtd_partitions(struct mtd_info *master, + struct mtd_partition **pparts, + struct mtd_part_parser_data *data) +{ + unsigned int envpartnum = 0, linuxpartnum = 0; + unsigned int typenumeration[5] = { 0, 0, 0, 0, 0 }; + unsigned char evn[5]; + const unsigned char *partvar = NULL; + + struct mtd_partition *ac49x_parts; + + ac49x_parts = kzalloc(sizeof(*ac49x_parts) * AC49X_MAXENVPARTS, + GFP_KERNEL); + + if (!ac49x_parts) + return -ENOMEM; + + linuxpartnum = 0; + for (envpartnum = 0; envpartnum < AC49X_MAXENVPARTS; envpartnum++) { + struct mtd_partition parsepart; + unsigned int offset, size, type; + int err; + sprintf(evn, "mtd%d", envpartnum); + partvar = prom_getenv(evn); + if (!partvar) + continue; + err = parse_partvar(partvar, &parsepart); + if (err) + continue; + offset = parsepart.offset; + size = parsepart.size; + type = detect_parttype(master, parsepart); + gen_partname(type, typenumeration, &parsepart); + /* protect loader */ + if (type == AC49X_PARTTYPE_LOADER) + parsepart.mask_flags = MTD_WRITEABLE; + else + parsepart.mask_flags = 0; + + memcpy(&(ac49x_parts[linuxpartnum]), &parsepart, + sizeof(struct mtd_partition)); + + /* scan for contained rootfs */ + if (type == AC49X_PARTTYPE_LINUX) { + parsepart.offset += ROOTFS_MIN_OFFSET & + ~(master->erasesize - 1); + parsepart.size -= ROOTFS_MIN_OFFSET & + ~(master->erasesize - 1); + do { + unsigned int size, offset; + size = parsepart.size; + offset = parsepart.offset; + + type = detect_parttype(master, parsepart); + if (type == AC49X_PARTTYPE_ROOTFS) { + gen_partname(type, typenumeration, + &parsepart); + printk(KERN_INFO + "%s %s: 0x%08x@0x%08x\n", + "detected sub-partition", + parsepart.name, + (unsigned int)parsepart.size, + (unsigned int)parsepart.offset); + linuxpartnum++; + memcpy(&(ac49x_parts[linuxpartnum]), + &parsepart, + sizeof(struct mtd_partition)); + break; + } + parsepart.offset += master->erasesize; + parsepart.size -= master->erasesize; + } while (parsepart.size >= master->erasesize); + } + linuxpartnum++; + } + + *pparts = ac49x_parts; + return linuxpartnum; +} + +static struct mtd_part_parser ac49x_parser = { + .owner = THIS_MODULE, + .parse_fn = create_mtd_partitions, + .name = "ac49xpart", +}; + +static int __init ac49x_parser_init(void) +{ + return register_mtd_parser(&ac49x_parser); +} + +module_init(ac49x_parser_init); + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Daniel Golle <daniel.golle@gmail.com>"); +MODULE_DESCRIPTION("MTD partitioning for AudioCodes AC49x"); diff --git a/target/linux/ar7/files-3.9/drivers/mtd/titanpart.c b/target/linux/ar7/files-3.9/drivers/mtd/titanpart.c new file mode 100644 index 000000000..a6403f6ce --- /dev/null +++ b/target/linux/ar7/files-3.9/drivers/mtd/titanpart.c @@ -0,0 +1,234 @@ +#include <linux/kernel.h> +#include <linux/slab.h> + +#include <linux/mtd/mtd.h> +#include <linux/mtd/partitions.h> +#include <linux/bootmem.h> +#include <linux/magic.h> +#include <asm/mach-ar7/prom.h> + +#define IMAGE_A_SIZE 0X3c0000 +#define WRTP_PARTS 14 +#define NSP_IMG_MAGIC_NUMBER le32_to_cpu(0x4D544443) +#define NSP_IMG_SECTION_TYPE_KERNEL (0x01) +#define NSP_IMG_SECTION_TYPE_FILESYSTEM_ROOT (0x02) +#define NSP_IMG_SECTION_TYPE_FILESYSTEM (0x03) +#define MAX_NUM_PARTITIONS 14 + +static int part_count=0; +static struct mtd_partition titan_parts[WRTP_PARTS]; + + +struct nsp_img_hdr_head +{ + unsigned int magic; /* Magic number to identify this image header */ + unsigned int boot_offset; /* Offset from start of header to kernel code. */ + unsigned int flags; /* Image flags. */ + unsigned int hdr_version; /* Version of this header. */ + unsigned int hdr_size; /* The complete size of all portions of the header */ + unsigned int prod_id; /* This product id */ + unsigned int rel_id; /* Which release this is */ + unsigned int version; /* name-MMM.nnn.ooo-rxx => 0xMMnnooxx. See comment + below */ + unsigned int image_size; /* Image size (including header) */ + unsigned int info_offset; /* Offset from start of header to info block */ + unsigned int sect_info_offset; /* Offset from start of header to section desc */ + unsigned int chksum_offset; /* Offset from start of header to chksum block */ + unsigned int pad1; +}; + +struct nsp_img_hdr_section_info +{ + unsigned int num_sects; /* Number of section (and section desc blocks) in this image */ + unsigned int sect_size; /* Size of a SINGLE section_desc block */ + unsigned int sections_offset; /* Offset to from start of header to the start of the section blocks */ +}; + +/* There will be one of more of the following stuctures in the image header. Each + section will have one of these blocks. */ +struct nsp_img_hdr_sections +{ + unsigned int offset; /* Offset of section from start of NSP_IMG_HDR_HEAD */ + unsigned int total_size; /* Size of section (including pad size.) */ + unsigned int raw_size; /* Size of section only */ + unsigned int flags; /* Section flags */ + unsigned int chksum; /* Section checksum */ + unsigned int type; /* Section type. What kind of info does this section describe */ + char name[16]; /* Reference name for this section. */ +}; + + + + + +static int titan_parse_env_address(char *env_name, unsigned int *flash_base, + unsigned int *flash_end) +{ + char image_name[30]; + char *env_ptr; + char *base_ptr; + char *end_ptr; + char * string_ptr; + /* Get the image variable */ + env_ptr = prom_getenv(env_name); + if(!env_ptr){ + printk("titan: invalid env name, %s.\n", env_name); + return -1; /* Error, no image variable */ + } + strncpy(image_name, env_ptr, 30); + image_name[29]=0; + string_ptr = image_name; + /* Extract the start and stop addresses of the partition */ + base_ptr = strsep(&string_ptr, ","); + end_ptr = strsep(&string_ptr, ","); + if ((base_ptr == NULL) || (end_ptr == NULL)) { + printk("titan: Couldn't tokenize %s start,end.\n", image_name); + return -1; + } + + *flash_base = (unsigned int) simple_strtol(base_ptr, NULL, 0); + *flash_end = (unsigned int) simple_strtol(end_ptr, NULL, 0); + if((!*flash_base) || (!*flash_end)) { + printk("titan: Unable to convert :%s: :%s: into start,end values.\n", + env_name, image_name); + return -1; + } + *flash_base &= 0x0fffffff; + *flash_end &= 0x0fffffff; + return 0; +} + + + +static int titan_get_single_image(char *bootcfg_name, unsigned int *flash_base, + unsigned int *flash_end) +{ + char *env_ptr; + char *base_ptr; + char *end_ptr; + char image_name[30]; + char * string_ptr; + + if(!bootcfg_name || !flash_base || !flash_end) + return -1; + + env_ptr = prom_getenv(bootcfg_name); + if(!env_ptr){ + printk("titan: %s variable not found.\n", bootcfg_name); + return -1; /* Error, no bootcfg variable */ + } + + string_ptr = image_name; + /* Save off the image name */ + strncpy(image_name, env_ptr, 30); + image_name[29]=0; + + end_ptr=strsep(&string_ptr, "\""); + base_ptr=strsep(&string_ptr, "\""); /* Loose the last " */ + if(!end_ptr || !base_ptr){ + printk("titan: invalid bootcfg format, %s.\n", image_name); + return -1; /* Error, invalid bootcfg variable */ + } + + /* Now, parse the addresses */ + return titan_parse_env_address(base_ptr, flash_base, flash_end); +} + + + +static void titan_add_partition(char * env_name, unsigned int flash_base, unsigned int flash_end) +{ + titan_parts[part_count].name = env_name; + titan_parts[part_count].offset = flash_base; + titan_parts[part_count].size = flash_end-flash_base; + titan_parts[part_count].mask_flags = (strcmp(env_name, "bootloader")==0|| + strcmp(env_name, "boot_env")==0 || + strcmp(env_name, "full_image")==0 )?MTD_WRITEABLE:0; + part_count++; + +} +int create_titan_partitions(struct mtd_info *master, + struct mtd_partition **pparts, + unsigned long origin) +{ + struct nsp_img_hdr_head hdr; + struct nsp_img_hdr_section_info sect_info; + struct nsp_img_hdr_sections section; + unsigned int flash_base, flash_end; + unsigned int start, end; + char *name; + int i; + int total_sects=0; + size_t len; + + /* Get the bootcfg env variable first */ + if(titan_get_single_image("BOOTCFG", &flash_base, &flash_end)) { + /* Error, fallback */ + return -1; + } + + /* Get access to the header, and do some validation checks */ + //hdr=(struct nsp_img_hdr_head*)flash_base; + mtd_read(master, flash_base, sizeof(struct nsp_img_hdr_head), &len, (uint8_t *)&hdr); + if(hdr.magic != NSP_IMG_MAGIC_NUMBER) + return -1; /* Not a single image */ + + mtd_read(master, flash_base + hdr.sect_info_offset, sizeof(struct nsp_img_hdr_section_info), &len, (uint8_t *)§_info); + + /* Look for the root fs, and add it first. This way we KNOW where the rootfs is */ + for(i=0; i< sect_info.num_sects && i<MAX_NUM_PARTITIONS; i++){ + mtd_read(master, flash_base + sect_info.sections_offset + (i * sect_info.sect_size) , sizeof(struct nsp_img_hdr_sections), &len, (uint8_t *)§ion); + /* Add only the root partition */ + if(section.type != NSP_IMG_SECTION_TYPE_FILESYSTEM_ROOT){ + continue; + } + start=flash_base + section.offset; + end=start + section.total_size; + titan_add_partition("root", start, end); + total_sects++; + + } + + for(i=0; i< sect_info.num_sects && i<MAX_NUM_PARTITIONS; i++){ + + mtd_read(master, flash_base + sect_info.sections_offset + (i * sect_info.sect_size) , sizeof(struct nsp_img_hdr_sections), &len, (uint8_t *)§ion); + + name=section.name; + if(section.type == NSP_IMG_SECTION_TYPE_FILESYSTEM_ROOT) + { + name = "rootfs"; + start=flash_base + section.offset; + end=flash_end; + titan_add_partition(name, start, end); + total_sects++; + } + else if(section.type == NSP_IMG_SECTION_TYPE_KERNEL) + { + name = "kernel"; + start=flash_base + section.offset; + end=start + section.total_size; + titan_add_partition(name, start, end); + total_sects++; + } + + } + + /* Next, lets add the single image */ + titan_add_partition("primary_image", flash_base, flash_end); + total_sects++; + + + titan_add_partition("full_image", 0, master->size); + total_sects++; + + if (!titan_parse_env_address("BOOTLOADER", &start, &end)){ + titan_add_partition("bootloader", start, end); + total_sects++; + } + if (!titan_parse_env_address("boot_env", &start, &end)){ + titan_add_partition("boot_env", start, end); + total_sects++; + } + *pparts = titan_parts; + return total_sects; +} |