Hello?
I fixed miscalculated total sectors when using reserve area feature.
Also I changed CONFIG_MG_DISK_RES's unit to KB. (Byte is too small and also needs sector size alignment.)
Any comments will be appreciated.
Signed-off-by: unsik Kim donari75@gmail.com --- common/Makefile | 2 + common/cmd_mgdisk.c | 76 +++++ common/cmd_nvedit.c | 8 +- common/env_mgdisk.c | 90 ++++++ disk/part.c | 8 +- disk/part_amiga.c | 5 +- disk/part_dos.c | 1 + disk/part_efi.c | 1 + disk/part_iso.c | 1 + disk/part_mac.c | 1 + doc/README.mflash | 93 +++++++ drivers/block/Makefile | 5 +- drivers/block/mg_disk.c | 635 +++++++++++++++++++++++++++++++++++++++++++ drivers/block/mg_disk_prv.h | 140 ++++++++++ fs/fat/fat.c | 2 + include/config_cmd_all.h | 1 + include/environment.h | 12 + include/mg_disk.h | 51 ++++ include/part.h | 1 + 19 files changed, 1125 insertions(+), 8 deletions(-)
diff --git a/common/Makefile b/common/Makefile index 93e3963..3a85c2a 100644 --- a/common/Makefile +++ b/common/Makefile @@ -53,6 +53,7 @@ COBJS-$(CONFIG_ENV_IS_IN_DATAFLASH) += env_dataflash.o COBJS-$(CONFIG_ENV_IS_IN_EEPROM) += env_eeprom.o COBJS-y += env_embedded.o COBJS-$(CONFIG_ENV_IS_IN_FLASH) += env_flash.o +COBJS-$(CONFIG_ENV_IS_IN_MG_DISK) += env_mgdisk.o COBJS-$(CONFIG_ENV_IS_IN_NAND) += env_nand.o COBJS-$(CONFIG_ENV_IS_IN_NVRAM) += env_nvram.o COBJS-$(CONFIG_ENV_IS_IN_ONENAND) += env_onenand.o @@ -104,6 +105,7 @@ COBJS-$(CONFIG_LOGBUFFER) += cmd_log.o COBJS-$(CONFIG_ID_EEPROM) += cmd_mac.o COBJS-$(CONFIG_CMD_MEMORY) += cmd_mem.o COBJS-$(CONFIG_CMD_MFSL) += cmd_mfsl.o +COBJS-$(CONFIG_CMD_MG_DISK) += cmd_mgdisk.o COBJS-$(CONFIG_MII) += miiphyutil.o COBJS-$(CONFIG_CMD_MII) += miiphyutil.o COBJS-$(CONFIG_CMD_MII) += cmd_mii.o diff --git a/common/cmd_mgdisk.c b/common/cmd_mgdisk.c new file mode 100644 index 0000000..f2f5061 --- /dev/null +++ b/common/cmd_mgdisk.c @@ -0,0 +1,76 @@ +/* + * (C) Copyright 2009 mGine co. + * unsik Kim donari75@gmail.com + * + * See file CREDITS for list of people who contributed to this + * project. + * + * 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., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#include <common.h> +#include <command.h> + +#if defined (CONFIG_CMD_MG_DISK) + +#include <mg_disk.h> + +int do_mg_disk_cmd (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) +{ + u32 from, to, size; + + switch (argc) { + case 2: + if (!strcmp(argv[1], "init")) + mg_disk_init(); + else + return 1; + break; + case 4: + from = simple_strtoul(argv[2], NULL, 0); + to = simple_strtoul(argv[3], NULL, 0); + size = simple_strtoul(argv[4], NULL, 0); + + if (!strcmp(argv[1], "read")) + mg_disk_read(from, (u8 *)to, size); + else if (!strcmp(argv[1], "write")) + mg_disk_write(to, (u8 *)from, size); + else if (!strcmp(argv[1], "readsec")) + mg_disk_read_sects((void *)to, from, size); + else if (!strcmp(argv[1], "writesec")) + mg_disk_write_sects((void *)from, to, size); + else + return 1; + break; + default: + printf("Usage:\n%s\n", cmdtp->usage); + return 1; + } + return 0; +} + +U_BOOT_CMD( + mgd, 5, 0, do_mg_disk_cmd, + "mgd - mgine m[g]flash command\n", + ": mgine mflash IO mode (disk) command\n" + " - initialize : mgd init\n" + " - random read : mgd read [from] [to] [size]\n" + " - random write : mgd write [from] [to] [size]\n" + " - sector read : mgd readsec [sector] [to] [counts]\n" + " - sector write : mgd writesec [from] [sector] [counts]\n" +); + +#endif diff --git a/common/cmd_nvedit.c b/common/cmd_nvedit.c index 1fcb4c9..649b23d 100644 --- a/common/cmd_nvedit.c +++ b/common/cmd_nvedit.c @@ -52,15 +52,17 @@
DECLARE_GLOBAL_DATA_PTR;
-#if !defined(CONFIG_ENV_IS_IN_NVRAM) && \ - !defined(CONFIG_ENV_IS_IN_EEPROM) && \ +#if !defined(CONFIG_ENV_IS_IN_EEPROM) && \ !defined(CONFIG_ENV_IS_IN_FLASH) && \ !defined(CONFIG_ENV_IS_IN_DATAFLASH) && \ + !defined(CONFIG_ENV_IS_IN_MG_DISK) && \ !defined(CONFIG_ENV_IS_IN_NAND) && \ + !defined(CONFIG_ENV_IS_IN_NVRAM) && \ !defined(CONFIG_ENV_IS_IN_ONENAND) && \ !defined(CONFIG_ENV_IS_IN_SPI_FLASH) && \ !defined(CONFIG_ENV_IS_NOWHERE) -# error Define one of CONFIG_ENV_IS_IN_{NVRAM|EEPROM|FLASH|DATAFLASH|ONENAND|SPI_FLASH|NOWHERE} +# error Define one of CONFIG_ENV_IS_IN_{EEPROM|FLASH|DATAFLASH|ONENAND|\ +SPI_FLASH|MG_DISK|NVRAM|NOWHERE} #endif
#define XMK_STR(x) #x diff --git a/common/env_mgdisk.c b/common/env_mgdisk.c new file mode 100644 index 0000000..2b4949f --- /dev/null +++ b/common/env_mgdisk.c @@ -0,0 +1,90 @@ +/* + * (C) Copyright 2009 mGine co. + * unsik Kim donari75@gmail.com + * + * See file CREDITS for list of people who contributed to this + * project. + * + * 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., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#include <common.h> +#include <command.h> +#include <environment.h> +#include <linux/stddef.h> +#include <mg_disk.h> + +/* references to names in env_common.c */ +extern uchar default_environment[]; +extern int default_environment_size; + +char * env_name_spec = "MG_DISK"; + +env_t *env_ptr = 0; + +DECLARE_GLOBAL_DATA_PTR; + +uchar env_get_char_spec(int index) +{ + return (*((uchar *) (gd->env_addr + index))); +} + +void env_relocate_spec(void) +{ + unsigned int err; + + err = mg_disk_init(); + if (err) { + puts ("*** Warning - mg_disk_init error"); + goto OUT; + } + err = mg_disk_read(CONFIG_ENV_ADDR, (u_char *)env_ptr, CONFIG_ENV_SIZE); + if (err) { + puts ("*** Warning - mg_disk_read error"); + goto OUT; + } + + if (crc32(0, env_ptr->data, ENV_SIZE) != env_ptr->crc) { + puts ("*** Warning - CRC error"); + goto OUT; + } + + return; + +OUT: + printf (", using default environment\n\n"); + set_default_env(); +} + +int saveenv(void) +{ + unsigned int err; + env_ptr->crc = crc32(0, env_ptr->data, ENV_SIZE); + err = mg_disk_write(CONFIG_ENV_ADDR, (u_char *)env_ptr, + CONFIG_ENV_SIZE); + if (err) + puts ("*** Warning - mg_disk_write error\n\n"); + return err; +} + +int env_init(void) +{ + /* use default */ + gd->env_addr = (ulong) & default_environment[0]; + gd->env_valid = 1; + + return 0; +} diff --git a/disk/part.c b/disk/part.c index e353cee..fe299c7 100644 --- a/disk/part.c +++ b/disk/part.c @@ -35,6 +35,7 @@ #endif
#if (defined(CONFIG_CMD_IDE) || \ + defined(CONFIG_CMD_MG_DISK) || \ defined(CONFIG_CMD_SATA) || \ defined(CONFIG_CMD_SCSI) || \ defined(CONFIG_CMD_USB) || \ @@ -65,6 +66,9 @@ static const struct block_drvr block_drvr[] = { #if defined(CONFIG_SYSTEMACE) { .name = "ace", .get_dev = systemace_get_dev, }, #endif +#if defined(CONFIG_CMD_MG_DISK) + { .name = "mgd", .get_dev = mg_disk_get_dev, }, +#endif { }, };
@@ -91,6 +95,7 @@ block_dev_desc_t *get_dev(char* ifname, int dev) #endif
#if (defined(CONFIG_CMD_IDE) || \ + defined(CONFIG_CMD_MG_DISK) || \ defined(CONFIG_CMD_SATA) || \ defined(CONFIG_CMD_SCSI) || \ defined(CONFIG_CMD_USB) || \ @@ -203,11 +208,12 @@ void dev_print (block_dev_desc_t *dev_desc) #endif
#if (defined(CONFIG_CMD_IDE) || \ + defined(CONFIG_CMD_MG_DISK) || \ defined(CONFIG_CMD_SATA) || \ defined(CONFIG_CMD_SCSI) || \ defined(CONFIG_CMD_USB) || \ defined(CONFIG_MMC) || \ - defined(CONFIG_SYSTEMACE) ) + defined(CONFIG_SYSTEMACE) )
#if defined(CONFIG_MAC_PARTITION) || \ defined(CONFIG_DOS_PARTITION) || \ diff --git a/disk/part_amiga.c b/disk/part_amiga.c index 6c3d748..6f25173 100644 --- a/disk/part_amiga.c +++ b/disk/part_amiga.c @@ -27,6 +27,7 @@ #include "part_amiga.h"
#if (defined(CONFIG_CMD_IDE) || \ + defined(CONFIG_CMD_MG_DISK) || \ defined(CONFIG_CMD_SCSI) || \ defined(CONFIG_CMD_USB) || \ defined(CONFIG_MMC) || \ @@ -154,7 +155,7 @@ struct rigid_disk_block *get_rdisk(block_dev_desc_t *dev_desc)
s = getenv("amiga_scanlimit"); if (s) - limit = atoi(s); + limit = simple_strtoul(s, NULL, 10); else limit = AMIGA_BLOCK_LIMIT;
@@ -195,7 +196,7 @@ struct bootcode_block *get_bootcode(block_dev_desc_t *dev_desc)
s = getenv("amiga_scanlimit"); if (s) - limit = atoi(s); + limit = simple_strtoul(s, NULL, 10); else limit = AMIGA_BLOCK_LIMIT;
diff --git a/disk/part_dos.c b/disk/part_dos.c index 4d778ec..845cdb6 100644 --- a/disk/part_dos.c +++ b/disk/part_dos.c @@ -36,6 +36,7 @@ #include "part_dos.h"
#if (defined(CONFIG_CMD_IDE) || \ + defined(CONFIG_CMD_MG_DISK) || \ defined(CONFIG_CMD_SATA) || \ defined(CONFIG_CMD_SCSI) || \ defined(CONFIG_CMD_USB) || \ diff --git a/disk/part_efi.c b/disk/part_efi.c index d8a8111..4cf79fb 100644 --- a/disk/part_efi.c +++ b/disk/part_efi.c @@ -37,6 +37,7 @@ #include "part_efi.h"
#if (defined(CONFIG_CMD_IDE) || \ + defined(CONFIG_CMD_MG_DISK) || \ defined(CONFIG_CMD_SATA) || \ defined(CONFIG_CMD_SCSI) || \ defined(CONFIG_CMD_USB) || \ diff --git a/disk/part_iso.c b/disk/part_iso.c index 72ff868..8348ce8 100644 --- a/disk/part_iso.c +++ b/disk/part_iso.c @@ -26,6 +26,7 @@ #include "part_iso.h"
#if (defined(CONFIG_CMD_IDE) || \ + defined(CONFIG_CMD_MG_DISK) || \ defined(CONFIG_CMD_SCSI) || \ defined(CONFIG_CMD_SATA) || \ defined(CONFIG_CMD_USB) || \ diff --git a/disk/part_mac.c b/disk/part_mac.c index 1922fe5..fce4cc7 100644 --- a/disk/part_mac.c +++ b/disk/part_mac.c @@ -35,6 +35,7 @@ #include "part_mac.h"
#if (defined(CONFIG_CMD_IDE) || \ + defined(CONFIG_CMD_MG_DISK) || \ defined(CONFIG_CMD_SCSI) || \ defined(CONFIG_CMD_SATA) || \ defined(CONFIG_CMD_USB) || \ diff --git a/doc/README.mflash b/doc/README.mflash new file mode 100644 index 0000000..d0d0f7b --- /dev/null +++ b/doc/README.mflash @@ -0,0 +1,93 @@ + +This document describes m[g]flash support in u-boot. + +Contents + 1. Overview + 2. Porting mflash driver + 3. Mflash command + 4. Misc. + +1. Overview +Mflash and gflash are embedded flash drive. The only difference is mflash is +MCP(Multi Chip Package) device. These two device operate exactly same way. +So the rest mflash repersents mflash and gflash altogether. + +2. Porting mflash driver + +2-1. Board configuration +* Mflash driver support +#define CONFIG_CMD_MG_DISK + +* Environment variable support (optional) +#define CONFIG_ENV_IS_IN_MG_DISK +Also CONFIG_ENV_ADDR and CONFIG_ENV_SIZE should be defined. +CONFIG_ENV_ADDR is byte offset starting from 0. + +Following example sets environment variable location to 0x80000 (1024'th +sector) and size of 0x400 (1024 byte) +#define CONFIG_ENV_ADDR 0x80000 +#define CONFIG_ENV_SIZE 0x400 + +* Reserved size config (optional) +If you want to use some reserved area for bootloader, environment variable or +whatever, use CONFIG_MG_DISK_RES. The unit is KB. Mflash's block operation +method use this value as start offset. So any u-boot's partition table parser +and file system command work consistently. You can access this area by using +mflash command. + +Following example sets 10MB of reserved area. +#define CONFIG_MG_DISK_RES 10240 + +2-2. Porting mg_get_drv_data function +Mflash is active device and need some gpio control for proper operation. +This board dependency resolved by using mg_get_drv_data function. +Port this function at your board init file. See include/mg_disk.h + +Here is some pseudo example. + +static void custom_hdrst_pin (u8 level) +{ + if (level) + /* set hard reset pin to high */ + else + /* set hard reset pin to low */ +} + +static void custom_ctrl_pin_init (void) +{ + /* Set hard reset, write protect, deep power down pins + * to gpio. + * Set these pins to output high + */ +} + +struct mg_drv_data* mg_get_drv_data (void) +{ + static struct mg_drv_data prv; + + prv.base = /* base address of mflash */ + prv.mg_ctrl_pin_init = custom_ctrl_pin_init; + prv.mg_hdrst_pin = custom_hdrst_pin; + + return &prv; +} + +3. Mflash command + +* initialize : mgd init +* random read : mgd read [from] [to] [size] + ex) read 256 bytes from 0x300000 of mflash to 0xA0100000 of host memory + mgd read 0x300000 0xA0100000 256 +* random write : mgd write [from] [to] [size] +* sector read : mgd readsec [sector] [to] [count] + ex) read 10 sectors starts from 400 sector to 0xA0100000 + mgd readsec 400 0xA0100000 10 +* sector write : mgd writesec [from] [sector] [count] + +4. Misc. +Mflash's device interface name for block driver is "mgd". +Here is ext2 file system access example. + + mgd init + ext2ls mgd 0:1 /boot + ext2load mgd 0:1 0xa0010000 /boot/uImage 1954156 diff --git a/drivers/block/Makefile b/drivers/block/Makefile index 59388d9..eccefc1 100644 --- a/drivers/block/Makefile +++ b/drivers/block/Makefile @@ -25,13 +25,14 @@ include $(TOPDIR)/config.mk
LIB := $(obj)libblock.a
-COBJS-$(CONFIG_SCSI_AHCI) += ahci.o COBJS-$(CONFIG_ATA_PIIX) += ata_piix.o +COBJS-$(CONFIG_CMD_MG_DISK) += mg_disk.o COBJS-$(CONFIG_FSL_SATA) += fsl_sata.o +COBJS-$(CONFIG_IDE_SIL680) += sil680.o COBJS-$(CONFIG_LIBATA) += libata.o COBJS-$(CONFIG_PATA_BFIN) += pata_bfin.o COBJS-$(CONFIG_SATA_SIL3114) += sata_sil3114.o -COBJS-$(CONFIG_IDE_SIL680) += sil680.o +COBJS-$(CONFIG_SCSI_AHCI) += ahci.o COBJS-$(CONFIG_SCSI_SYM53C8XX) += sym53c8xx.o COBJS-$(CONFIG_SYSTEMACE) += systemace.o
diff --git a/drivers/block/mg_disk.c b/drivers/block/mg_disk.c new file mode 100644 index 0000000..193a441 --- /dev/null +++ b/drivers/block/mg_disk.c @@ -0,0 +1,635 @@ +/* + * (C) Copyright 2009 mGine co. + * unsik Kim donari75@gmail.com + * + * See file CREDITS for list of people who contributed to this + * project. + * + * 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., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#include <common.h> +#include <malloc.h> +#include <part.h> +#include <ata.h> +#include <asm/io.h> +#include "mg_disk_prv.h" + +#ifdef CONFIG_CMD_MG_DISK + +#ifndef CONFIG_MG_DISK_RES +#define CONFIG_MG_DISK_RES 0 +#endif + +#define MG_RES_SEC ((CONFIG_MG_DISK_RES) << 1) + +#define MG_BASE (host.drv_data->base) + +static struct mg_host host; + +static block_dev_desc_t mg_disk_dev = { + .if_type = IF_TYPE_ATAPI, + .part_type = PART_TYPE_UNKNOWN, + .type = DEV_TYPE_HARDDISK, + .blksz = MG_SECTOR_SIZE, + .priv = &host }; + +static void mg_dump_status (const char *msg, unsigned int stat, unsigned err) +{ + char *name = MG_DEV_NAME; + + printf("%s: %s: status=0x%02x { ", name, msg, stat & 0xff); + if (stat & MG_REG_STATUS_BIT_BUSY) + printf("Busy "); + if (stat & MG_REG_STATUS_BIT_READY) + printf("DriveReady "); + if (stat & MG_REG_STATUS_BIT_WRITE_FAULT) + printf("WriteFault "); + if (stat & MG_REG_STATUS_BIT_SEEK_DONE) + printf("SeekComplete "); + if (stat & MG_REG_STATUS_BIT_DATA_REQ) + printf("DataRequest "); + if (stat & MG_REG_STATUS_BIT_CORRECTED_ERROR) + printf("CorrectedError "); + if (stat & MG_REG_STATUS_BIT_ERROR) + printf("Error "); + printf("}\n"); + + if ((stat & MG_REG_STATUS_BIT_ERROR)) { + printf("%s: %s: error=0x%02x { ", name, msg, err & 0xff); + if (err & MG_REG_ERR_BBK) + printf("BadSector "); + if (err & MG_REG_ERR_UNC) + printf("UncorrectableError "); + if (err & MG_REG_ERR_IDNF) + printf("SectorIdNotFound "); + if (err & MG_REG_ERR_ABRT) + printf("DriveStatusError "); + if (err & MG_REG_ERR_AMNF) + printf("AddrMarkNotFound "); + printf("}\n"); + } +} + +#if CONFIG_SYS_HZ == 1000 +#define msecs_to_hz(s) (s) +#else +static unsigned int msecs_to_hz (u32 msec) +{ + u32 hz = CONFIG_SYS_HZ / 1000 * msec; + + if (!hz) + hz = 1; + + return hz; +} +#endif + +/* + * copy src to dest, skipping leading and trailing blanks and null + * terminate the string + * "len" is the size of available memory including the terminating '\0' + */ +static void mg_ident_cpy (unsigned char *dst, unsigned char *src, + unsigned int len) +{ + unsigned char *end, *last; + + last = dst; + end = src + len - 1; + + /* reserve space for '\0' */ + if (len < 2) + goto OUT; + + /* skip leading white space */ + while ((*src) && (src<end) && (*src==' ')) + ++src; + + /* copy string, omitting trailing white space */ + while ((*src) && (src<end)) { + *dst++ = *src; + if (*src++ != ' ') + last = dst; + } +OUT: + *last = '\0'; +} + +static unsigned int mg_wait (u32 expect, u32 msec) +{ + u8 status; + u32 from, cur, expire, err; + + err = MG_ERR_NONE; + reset_timer(); + from = get_timer(0); + expire = msecs_to_hz(msec); + + status = readb(MG_BASE + MG_REG_STATUS); + do { + cur = get_timer(from); + if (status & MG_REG_STATUS_BIT_BUSY) { + if (expect == MG_REG_STATUS_BIT_BUSY) + break; + } else { + /* Check the error condition! */ + if (status & MG_REG_STATUS_BIT_ERROR) { + err = readb(MG_BASE + MG_REG_ERROR); + mg_dump_status("mg_wait", status, err); + break; + } + + if (expect == MG_STAT_READY) + if (MG_READY_OK(status)) + break; + + if (expect == MG_REG_STATUS_BIT_DATA_REQ) + if (status & MG_REG_STATUS_BIT_DATA_REQ) + break; + } + status = readb(MG_BASE + MG_REG_STATUS); + } while (cur < expire); + + if (cur >= expire) + err = MG_ERR_TIMEOUT; + + return err; +} + +static int mg_get_disk_id (void) +{ + u32 iobuf[(MG_SECTOR_SIZE / sizeof(u32))]; + hd_driveid_t *iop = (hd_driveid_t *)iobuf; + u32 i, err, res; + u16 *buff = (u16 *)iobuf; + + writeb(MG_CMD_ID, MG_BASE + MG_REG_COMMAND); + err = mg_wait(MG_REG_STATUS_BIT_DATA_REQ, 3000); + if (err) + return err; + + for(i = 0; i < (MG_SECTOR_SIZE / sizeof(u32)) >> 1; i++) + buff[i] = readw(MG_BASE + MG_BUFF_OFFSET + i * 2); + + writeb(MG_CMD_RD_CONF, MG_BASE + MG_REG_COMMAND); + err = mg_wait(MG_STAT_READY, 3000); + if (err) + return err; + + if((iop->field_valid & 1) == 0) + return MG_ERR_TRANSLATION; + + mg_ident_cpy((unsigned char*)mg_disk_dev.revision, iop->fw_rev, + sizeof(mg_disk_dev.revision)); + mg_ident_cpy((unsigned char*)mg_disk_dev.vendor, iop->model, + sizeof(mg_disk_dev.vendor)); + mg_ident_cpy((unsigned char*)mg_disk_dev.product, iop->serial_no, + sizeof(mg_disk_dev.product)); +#ifdef __LITTLE_ENDIAN + /* + * firmware revision, model, and serial number have Big Endian Byte + * order in Word. Convert all three to little endian. + * + * See CF+ and CompactFlash Specification Revision 2.0: + * 6.2.1.6: Identify Drive, Table 39 for more details + */ + + strswab(mg_disk_dev.revision); + strswab(mg_disk_dev.vendor); + strswab(mg_disk_dev.product); +#endif /* __LITTLE_ENDIAN */ + +#ifdef __BIG_ENDIAN + iop->lba_capacity = (iop->lba_capacity << 16) | + (iop->lba_capacity >> 16); +#endif /* __BIG_ENDIAN */ + + if (MG_RES_SEC) { + MG_DBG("MG_RES_SEC=%d\n", MG_RES_SEC); + iop->cyls = (iop->lba_capacity - MG_RES_SEC) / + iop->sectors / iop->heads; + res = iop->lba_capacity - + iop->cyls * iop->heads * iop->sectors; + iop->lba_capacity -= res; + printf("mg_disk: %d sectors reserved\n", res); + } + + mg_disk_dev.lba = iop->lba_capacity; + return MG_ERR_NONE; +} + +static int mg_disk_reset (void) +{ + struct mg_drv_data *prv_data = host.drv_data; + s32 err; + u8 init_status; + + /* hdd rst low */ + prv_data->mg_hdrst_pin(0); + err = mg_wait(MG_REG_STATUS_BIT_BUSY, 300); + if(err) + return err; + + /* hdd rst high */ + prv_data->mg_hdrst_pin(1); + err = mg_wait(MG_STAT_READY, 3000); + if(err) + return err; + + /* soft reset on */ + writeb(MG_REG_CTRL_RESET | MG_REG_CTRL_INTR_DISABLE, + MG_BASE + MG_REG_DRV_CTRL); + err = mg_wait(MG_REG_STATUS_BIT_BUSY, 3000); + if(err) + return err; + + /* soft reset off */ + writeb(MG_REG_CTRL_INTR_DISABLE, MG_BASE + MG_REG_DRV_CTRL); + err = mg_wait(MG_STAT_READY, 3000); + if(err) + return err; + + init_status = readb(MG_BASE + MG_REG_STATUS) & 0xf; + + if (init_status == 0xf) + return MG_ERR_INIT_STAT; + + return err; +} + + +static unsigned int mg_out(unsigned int sect_num, + unsigned int sect_cnt, + unsigned int cmd) +{ + u32 err = MG_ERR_NONE; + + if ((err = mg_wait(MG_STAT_READY, 3000))) { + return err; + } + + writeb((u8)sect_cnt, MG_BASE + MG_REG_SECT_CNT); + writeb((u8)sect_num, MG_BASE + MG_REG_SECT_NUM); + writeb((u8)(sect_num >> 8), MG_BASE + MG_REG_CYL_LOW); + writeb((u8)(sect_num >> 16), MG_BASE + MG_REG_CYL_HIGH); + writeb((u8)((sect_num >> 24) | MG_REG_HEAD_LBA_MODE), + MG_BASE + MG_REG_DRV_HEAD); + writeb(cmd, MG_BASE + MG_REG_COMMAND); + return err; +} + +static unsigned int mg_do_read_sects(void *buff, u32 sect_num, u32 sect_cnt) +{ + u32 i, j, err; + u8 *buff_ptr = buff; + + err = mg_out(sect_num, sect_cnt, MG_CMD_RD); + if (err) + return err; + + for (i = 0; i < sect_cnt; i++) { + err = mg_wait(MG_REG_STATUS_BIT_DATA_REQ, 3000); + if (err) + return err; + + /* TODO : u16 unaligned case */ + for(j = 0; j < MG_SECTOR_SIZE >> 1; j++) { + *(u16 *)buff_ptr = + readw(MG_BASE + MG_BUFF_OFFSET + (j << 1)); + buff_ptr += 2; + } + + writeb(MG_CMD_RD_CONF, MG_BASE + MG_REG_COMMAND); + + MG_DBG("%u (0x%8.8x) sector read", sect_num + i, + (sect_num + i) * MG_SECTOR_SIZE); + } + + return err; +} + +unsigned int mg_disk_read_sects(void *buff, u32 sect_num, u32 sect_cnt) +{ + u32 quotient, residue, i, err; + u8 *buff_ptr = buff; + + quotient = sect_cnt >> 8; + residue = sect_cnt % 256; + + for (i = 0; i < quotient; i++) { + MG_DBG("sect num : %u buff : 0x%8.8x", sect_num, (u32)buff_ptr); + err = mg_do_read_sects(buff_ptr, sect_num, 256); + if (err) + return err; + sect_num += 256; + buff_ptr += 256 * MG_SECTOR_SIZE; + } + + if (residue) { + MG_DBG("sect num : %u buff : %8.8x", sect_num, (u32)buff_ptr); + err = mg_do_read_sects(buff_ptr, sect_num, residue); + } + + return err; +} + +unsigned long mg_block_read (int dev, unsigned long start, + lbaint_t blkcnt, void *buffer) +{ + start += MG_RES_SEC; + if (! mg_disk_read_sects(buffer, start, blkcnt)) + return blkcnt; + else + return 0; +} + +unsigned int mg_disk_read (u32 addr, u8 *buff, u32 len) +{ + u8 *sect_buff, *buff_ptr = buff; + u32 cur_addr, next_sec_addr, end_addr, cnt, sect_num; + u32 err = MG_ERR_NONE; + + /* TODO : sanity chk */ + cnt = 0; + cur_addr = addr; + end_addr = addr + len; + + sect_buff = malloc(MG_SECTOR_SIZE); + + if (cur_addr & MG_SECTOR_SIZE_MASK) { + next_sec_addr = (cur_addr + MG_SECTOR_SIZE) & + ~MG_SECTOR_SIZE_MASK; + sect_num = cur_addr >> MG_SECTOR_SIZE_SHIFT; + err = mg_disk_read_sects(sect_buff, sect_num, 1); + if (err) + goto mg_read_exit; + + if (end_addr < next_sec_addr) { + memcpy(buff_ptr, + sect_buff + (cur_addr & MG_SECTOR_SIZE_MASK), + end_addr - cur_addr); + MG_DBG("copies %u byte from sector offset 0x%8.8x", + end_addr - cur_addr, cur_addr); + cur_addr = end_addr; + } else { + memcpy(buff_ptr, + sect_buff + (cur_addr & MG_SECTOR_SIZE_MASK), + next_sec_addr - cur_addr); + MG_DBG("copies %u byte from sector offset 0x%8.8x", + next_sec_addr - cur_addr, cur_addr); + buff_ptr += (next_sec_addr - cur_addr); + cur_addr = next_sec_addr; + } + } + + if (cur_addr < end_addr) { + sect_num = cur_addr >> MG_SECTOR_SIZE_SHIFT; + next_sec_addr = cur_addr + MG_SECTOR_SIZE; + + while (next_sec_addr <= end_addr) { + cnt++; + next_sec_addr += MG_SECTOR_SIZE; + } + + if (cnt) + err = mg_disk_read_sects(buff_ptr, sect_num, cnt); + if (err) + goto mg_read_exit; + + buff_ptr += cnt * MG_SECTOR_SIZE; + cur_addr += cnt * MG_SECTOR_SIZE; + + if (cur_addr < end_addr) { + sect_num = cur_addr >> MG_SECTOR_SIZE_SHIFT; + err = mg_disk_read_sects(sect_buff, sect_num, 1); + if (err) + goto mg_read_exit; + memcpy(buff_ptr, sect_buff, end_addr - cur_addr); + MG_DBG("copies %u byte", end_addr - cur_addr); + } + } + +mg_read_exit: + free(sect_buff); + + return err; +} + +static int mg_do_write_sects(void *buff, u32 sect_num, u32 sect_cnt) +{ + u32 i, j, err; + u8 *buff_ptr = buff; + + err = mg_out(sect_num, sect_cnt, MG_CMD_WR); + if (err) + return err; + + for (i = 0; i < sect_cnt; i++) { + err = mg_wait(MG_REG_STATUS_BIT_DATA_REQ, 3000); + if (err) + return err; + + /* TODO : u16 unaligned case */ + for(j = 0; j < MG_SECTOR_SIZE >> 1; j++) { + writew(*(u16 *)buff_ptr, + MG_BASE + MG_BUFF_OFFSET + (j << 1)); + buff_ptr += 2; + } + + writeb(MG_CMD_WR_CONF, MG_BASE + MG_REG_COMMAND); + + MG_DBG("%u (0x%8.8x) sector write", + sect_num + i, (sect_num + i) * MG_SECTOR_SIZE); + } + + return err; +} + +unsigned int mg_disk_write_sects(void *buff, u32 sect_num, u32 sect_cnt) +{ + u32 quotient, residue, i; + u32 err = MG_ERR_NONE; + u8 *buff_ptr = buff; + + quotient = sect_cnt >> 8; + residue = sect_cnt % 256; + + for (i = 0; i < quotient; i++) { + MG_DBG("sect num : %u buff : %8.8x", sect_num, (u32)buff_ptr); + err = mg_do_write_sects(buff_ptr, sect_num, 256); + if (err) + return err; + sect_num += 256; + buff_ptr += 256 * MG_SECTOR_SIZE; + } + + if (residue) { + MG_DBG("sect num : %u buff : %8.8x", sect_num, (u32)buff_ptr); + err = mg_do_write_sects(buff_ptr, sect_num, residue); + } + + return err; +} + +unsigned long mg_block_write (int dev, unsigned long start, + lbaint_t blkcnt, const void *buffer) +{ + start += MG_RES_SEC; + if (!mg_disk_write_sects((void *)buffer, start, blkcnt)) + return blkcnt; + else + return 0; +} + +unsigned int mg_disk_write(u32 addr, u8 *buff, u32 len) +{ + u8 *sect_buff, *buff_ptr = buff; + u32 cur_addr, next_sec_addr, end_addr, cnt, sect_num; + u32 err = MG_ERR_NONE; + + /* TODO : sanity chk */ + cnt = 0; + cur_addr = addr; + end_addr = addr + len; + + sect_buff = malloc(MG_SECTOR_SIZE); + + if (cur_addr & MG_SECTOR_SIZE_MASK) { + + next_sec_addr = (cur_addr + MG_SECTOR_SIZE) & + ~MG_SECTOR_SIZE_MASK; + sect_num = cur_addr >> MG_SECTOR_SIZE_SHIFT; + err = mg_disk_read_sects(sect_buff, sect_num, 1); + if (err) + goto mg_write_exit; + + if (end_addr < next_sec_addr) { + memcpy(sect_buff + (cur_addr & MG_SECTOR_SIZE_MASK), + buff_ptr, end_addr - cur_addr); + MG_DBG("copies %u byte to sector offset 0x%8.8x", + end_addr - cur_addr, cur_addr); + cur_addr = end_addr; + } else { + memcpy(sect_buff + (cur_addr & MG_SECTOR_SIZE_MASK), + buff_ptr, next_sec_addr - cur_addr); + MG_DBG("copies %u byte to sector offset 0x%8.8x", + next_sec_addr - cur_addr, cur_addr); + buff_ptr += (next_sec_addr - cur_addr); + cur_addr = next_sec_addr; + } + + err = mg_disk_write_sects(sect_buff, sect_num, 1); + if (err) + goto mg_write_exit; + } + + if (cur_addr < end_addr) { + + sect_num = cur_addr >> MG_SECTOR_SIZE_SHIFT; + next_sec_addr = cur_addr + MG_SECTOR_SIZE; + + while (next_sec_addr <= end_addr) { + cnt++; + next_sec_addr += MG_SECTOR_SIZE; + } + + if (cnt) + err = mg_disk_write_sects(buff_ptr, sect_num, cnt); + if (err) + goto mg_write_exit; + + buff_ptr += cnt * MG_SECTOR_SIZE; + cur_addr += cnt * MG_SECTOR_SIZE; + + if (cur_addr < end_addr) { + sect_num = cur_addr >> MG_SECTOR_SIZE_SHIFT; + err = mg_disk_read_sects(sect_buff, sect_num, 1); + if (err) + goto mg_write_exit; + memcpy(sect_buff, buff_ptr, end_addr - cur_addr); + MG_DBG("copies %u byte", end_addr - cur_addr); + err = mg_disk_write_sects(sect_buff, sect_num, 1); + } + + } + +mg_write_exit: + free(sect_buff); + + return err; +} + +block_dev_desc_t *mg_disk_get_dev(int dev) +{ + return ((block_dev_desc_t *) & mg_disk_dev); +} + +/* must override this function */ +struct mg_drv_data * __attribute__((weak)) mg_get_drv_data (void) +{ + puts ("### WARNING ### port mg_get_drv_data function\n"); + return NULL; +} + +unsigned int mg_disk_init (void) +{ + struct mg_drv_data *prv_data; + u32 err = MG_ERR_NONE; + + prv_data = mg_get_drv_data(); + if (! prv_data) { + printf("%s:%d fail (no driver_data)\n", __func__, __LINE__); + err = MG_ERR_NO_DRV_DATA; + return err; + } + + ((struct mg_host *)mg_disk_dev.priv)->drv_data = prv_data; + + /* init ctrl pin */ + if (prv_data->mg_ctrl_pin_init) + prv_data->mg_ctrl_pin_init(); + + if (! prv_data->mg_hdrst_pin) { + err = MG_ERR_CTRL_RST; + return err; + } + + /* disk reset */ + err = mg_disk_reset(); + if (err) { + printf("%s:%d fail (err code : %d)\n", __func__, __LINE__, err); + return err; + } + + /* get disk id */ + err = mg_get_disk_id(); + if (err) { + printf("%s:%d fail (err code : %d)\n", __func__, __LINE__, err); + return err; + } + + mg_disk_dev.block_read = mg_block_read; + mg_disk_dev.block_write = mg_block_write; + + init_part(&mg_disk_dev); + + dev_print(&mg_disk_dev); + + return err; +} + +#endif /* CONFIG_CMD_MG_DISK */ diff --git a/drivers/block/mg_disk_prv.h b/drivers/block/mg_disk_prv.h new file mode 100644 index 0000000..a6b7299 --- /dev/null +++ b/drivers/block/mg_disk_prv.h @@ -0,0 +1,140 @@ +/* + * (C) Copyright 2009 mGine co. + * unsik Kim donari75@gmail.com + * + * See file CREDITS for list of people who contributed to this + * project. + * + * 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., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#ifndef __MG_DISK_PRV_H__ +#define __MG_DISK_PRV_H__ + +#include <mg_disk.h> + +/* name for block device */ +#define MG_DISK_NAME "mgd" +/* name for platform device */ +#define MG_DEV_NAME "mg_disk" + +#define MG_DISK_MAJ 240 +#define MG_DISK_MAX_PART 16 +#define MG_SECTOR_SIZE 512 +#define MG_SECTOR_SIZE_MASK (512 - 1) +#define MG_SECTOR_SIZE_SHIFT (9) +#define MG_MAX_SECTS 256 + +/* Register offsets */ +#define MG_BUFF_OFFSET 0x8000 +#define MG_STORAGE_BUFFER_SIZE 0x200 +#define MG_REG_OFFSET 0xC000 +#define MG_REG_FEATURE (MG_REG_OFFSET + 2) /* write case */ +#define MG_REG_ERROR (MG_REG_OFFSET + 2) /* read case */ +#define MG_REG_SECT_CNT (MG_REG_OFFSET + 4) +#define MG_REG_SECT_NUM (MG_REG_OFFSET + 6) +#define MG_REG_CYL_LOW (MG_REG_OFFSET + 8) +#define MG_REG_CYL_HIGH (MG_REG_OFFSET + 0xA) +#define MG_REG_DRV_HEAD (MG_REG_OFFSET + 0xC) +#define MG_REG_COMMAND (MG_REG_OFFSET + 0xE) /* write case */ +#define MG_REG_STATUS (MG_REG_OFFSET + 0xE) /* read case */ +#define MG_REG_DRV_CTRL (MG_REG_OFFSET + 0x10) +#define MG_REG_BURST_CTRL (MG_REG_OFFSET + 0x12) + +/* "Drive Select/Head Register" bit values */ +#define MG_REG_HEAD_MUST_BE_ON 0xA0 /* These 2 bits are always on */ +#define MG_REG_HEAD_DRIVE_MASTER (0x00 | MG_REG_HEAD_MUST_BE_ON) +#define MG_REG_HEAD_DRIVE_SLAVE (0x10 | MG_REG_HEAD_MUST_BE_ON) +#define MG_REG_HEAD_LBA_MODE (0x40 | MG_REG_HEAD_MUST_BE_ON) + + +/* "Device Control Register" bit values */ +#define MG_REG_CTRL_INTR_ENABLE 0x0 +#define MG_REG_CTRL_INTR_DISABLE (0x1 << 1) +#define MG_REG_CTRL_RESET (0x1 << 2) +#define MG_REG_CTRL_INTR_POLA_ACTIVE_HIGH 0x0 +#define MG_REG_CTRL_INTR_POLA_ACTIVE_LOW (0x1 << 4) +#define MG_REG_CTRL_DPD_POLA_ACTIVE_LOW 0x0 +#define MG_REG_CTRL_DPD_POLA_ACTIVE_HIGH (0x1 << 5) +#define MG_REG_CTRL_DPD_DISABLE 0x0 +#define MG_REG_CTRL_DPD_ENABLE (0x1 << 6) + +/* Status register bit */ + /* error bit in status register */ +#define MG_REG_STATUS_BIT_ERROR 0x01 + /* corrected error in status register */ +#define MG_REG_STATUS_BIT_CORRECTED_ERROR 0x04 + /* data request bit in status register */ +#define MG_REG_STATUS_BIT_DATA_REQ 0x08 + /* DSC - Drive Seek Complete */ +#define MG_REG_STATUS_BIT_SEEK_DONE 0x10 + /* DWF - Drive Write Fault */ +#define MG_REG_STATUS_BIT_WRITE_FAULT 0x20 +#define MG_REG_STATUS_BIT_READY 0x40 +#define MG_REG_STATUS_BIT_BUSY 0x80 + +/* handy status */ +#define MG_STAT_READY (MG_REG_STATUS_BIT_READY | MG_REG_STATUS_BIT_SEEK_DONE) +#define MG_READY_OK(s) (((s) & (MG_STAT_READY | \ + (MG_REG_STATUS_BIT_BUSY | \ + MG_REG_STATUS_BIT_WRITE_FAULT | \ + MG_REG_STATUS_BIT_ERROR))) == MG_STAT_READY) + +/* Error register */ +#define MG_REG_ERR_AMNF 0x01 +#define MG_REG_ERR_ABRT 0x04 +#define MG_REG_ERR_IDNF 0x10 +#define MG_REG_ERR_UNC 0x40 +#define MG_REG_ERR_BBK 0x80 + +/* error code for others */ +#define MG_ERR_NONE 0 +#define MG_ERR_TIMEOUT 0x100 +#define MG_ERR_INIT_STAT 0x101 +#define MG_ERR_TRANSLATION 0x102 +#define MG_ERR_CTRL_RST 0x103 +#define MG_ERR_NO_DRV_DATA 0x104 + +#define MG_MAX_ERRORS 16 /* Max read/write errors/sector */ +#define MG_RESET_FREQ 4 /* Reset controller every 4th retry */ + +/* command */ +#define MG_CMD_RD 0x20 +#define MG_CMD_WR 0x30 +#define MG_CMD_SLEEP 0x99 +#define MG_CMD_WAKEUP 0xC3 +#define MG_CMD_ID 0xEC +#define MG_CMD_WR_CONF 0x3C +#define MG_CMD_RD_CONF 0x40 + +/* main structure for mflash driver */ +struct mg_host { + struct mg_drv_data *drv_data; + /* for future use */ +}; + +/* + * Debugging macro and defines + */ +#undef DO_MG_DEBUG +#ifdef DO_MG_DEBUG +# define MG_DBG(fmt, args...) printf("%s:%d "fmt"\n", __func__, __LINE__,##args) +#else /* CONFIG_MG_DEBUG */ +# define MG_DBG(fmt, args...) do { } while(0) +#endif /* CONFIG_MG_DEBUG */ + +#endif + diff --git a/fs/fat/fat.c b/fs/fat/fat.c index 8081ee7..602edae 100644 --- a/fs/fat/fat.c +++ b/fs/fat/fat.c @@ -84,6 +84,7 @@ fat_register_device(block_dev_desc_t *dev_desc, int part_no) return -1; } #if (defined(CONFIG_CMD_IDE) || \ + defined(CONFIG_CMD_MG_DISK) || \ defined(CONFIG_CMD_SATA) || \ defined(CONFIG_CMD_SCSI) || \ defined(CONFIG_CMD_USB) || \ @@ -987,6 +988,7 @@ file_fat_detectfs(void) return 1; } #if defined(CONFIG_CMD_IDE) || \ + defined(CONFIG_CMD_MG_DISK) || \ defined(CONFIG_CMD_SATA) || \ defined(CONFIG_CMD_SCSI) || \ defined(CONFIG_CMD_USB) || \ diff --git a/include/config_cmd_all.h b/include/config_cmd_all.h index d771696..0ee2b58 100644 --- a/include/config_cmd_all.h +++ b/include/config_cmd_all.h @@ -83,5 +83,6 @@ #define CONFIG_CMD_VFD /* VFD support (TRAB) */ #define CONFIG_CMD_XIMG /* Load part of Multi Image */ #define CONFIG_CMD_AT91_SPIMUX /* AT91 MMC/SPI Mux Support */ +#define CONFIG_CMD_MG_DISK /* mGine m(g)flash IO node support */
#endif /* _CONFIG_CMD_ALL_H */ diff --git a/include/environment.h b/include/environment.h index ea6b4d1..507e832 100644 --- a/include/environment.h +++ b/include/environment.h @@ -84,6 +84,18 @@ # endif #endif /* CONFIG_ENV_IS_IN_NAND */
+#if defined(CONFIG_ENV_IS_IN_MG_DISK) +# ifndef CONFIG_ENV_ADDR +# error "Need to define CONFIG_ENV_ADDR when using CONFIG_ENV_IS_IN_MG_DISK" +# endif +# ifndef CONFIG_ENV_SIZE +# error "Need to define CONFIG_ENV_SIZE when using CONFIG_ENV_IS_IN_MG_DISK" +# endif +# ifdef CONFIG_ENV_IS_EMBEDDED +# error "CONFIG_ENV_IS_EMBEDDED not supported when using CONFIG_ENV_IS_IN_MG_DISK" +# endif +#endif /* CONFIG_ENV_IS_IN_MG_DISK */ + #ifdef USE_HOSTCC # include <stdint.h> #else diff --git a/include/mg_disk.h b/include/mg_disk.h new file mode 100644 index 0000000..bd767a1 --- /dev/null +++ b/include/mg_disk.h @@ -0,0 +1,51 @@ +/* + * (C) Copyright 2009 mGine co. + * unsik Kim donari75@gmail.com + * + * See file CREDITS for list of people who contributed to this + * project. + * + * 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., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#ifndef MG_DISK_H_ +#define MG_DISK_H_ + +#include <asm/types.h> + +/* private driver data */ +struct mg_drv_data { + /* base address of mflash */ + u32 base; + /* Initialize hard reset, write protect, deep power down pins. + * Set these pins to GPIO and output high + */ + void (*mg_ctrl_pin_init) (void); + /* Set hard reset pin for given level + * level : logical level of hard reset pin (0 or 1) + */ + void (*mg_hdrst_pin) (u8 level); +}; + +struct mg_drv_data* mg_get_drv_data (void); + +unsigned int mg_disk_init (void); +unsigned int mg_disk_read (u32 addr, u8 *buff, u32 len); +unsigned int mg_disk_write(u32 addr, u8 *buff, u32 len); +unsigned int mg_disk_write_sects(void *buff, u32 sect_num, u32 sect_cnt); +unsigned int mg_disk_read_sects(void *buff, u32 sect_num, u32 sect_cnt); + +#endif /*MG_DISK_H_*/ diff --git a/include/part.h b/include/part.h index 980fd04..3cdae02 100644 --- a/include/part.h +++ b/include/part.h @@ -100,6 +100,7 @@ block_dev_desc_t* scsi_get_dev(int dev); block_dev_desc_t* usb_stor_get_dev(int dev); block_dev_desc_t* mmc_get_dev(int dev); block_dev_desc_t* systemace_get_dev(int dev); +block_dev_desc_t* mg_disk_get_dev(int dev);
/* disk/part.c */ int get_partition_info (block_dev_desc_t * dev_desc, int part, disk_partition_t *info); ---
2009/2/2 unsik Kim donari75@gmail.com:
Hello?
I fixed and added followings for your requests.
too long line length => fixed
not a linux coding style => fixed
add document (doc/README.mflash)
ARM only dependency and always init problem => fixed
msecs_to_hz function is changed.
In some ARM platform, CONFIG_SYS_HZ is not 1000 (samsung s3c24xx, intel pxa25x, pxa27x) and get_timer() just return elapsed tick of OS timer. For the compatibility of these, I use #ifdef.
Any comments, advice will be appreciated.
Here is fixed patch.
unsik Kim
2009/1/28 Wolfgang Denk wd@denx.de:
Dear Kim,
In message 57afda040901052341g3b00f741r445c0ce8d33b7b71@mail.gmail.com you wrote:
I wrote mflash IO mode block device driver for U-Boot.
Thanks for your contribution. Here a few comments:
diff --git a/common/Makefile b/common/Makefile index 93e3963..f93e575 100644 --- a/common/Makefile +++ b/common/Makefile @@ -57,6 +57,7 @@ COBJS-$(CONFIG_ENV_IS_IN_NAND) += env_nand.o COBJS-$(CONFIG_ENV_IS_IN_NVRAM) += env_nvram.o COBJS-$(CONFIG_ENV_IS_IN_ONENAND) += env_onenand.o COBJS-$(CONFIG_ENV_IS_IN_SPI_FLASH) += env_sf.o +COBJS-$(CONFIG_ENV_IS_IN_MG_DISK) += env_mgdisk.o COBJS-$(CONFIG_ENV_IS_NOWHERE) += env_nowhere.o
# command @@ -138,6 +139,7 @@ endif COBJS-$(CONFIG_CMD_XIMG) += cmd_ximg.o COBJS-$(CONFIG_YAFFS2) += cmd_yaffs2.o COBJS-$(CONFIG_VFD) += cmd_vfd.o +COBJS-$(CONFIG_CMD_MG_DISK) += cmd_mgdisk.o
Please keep such lists sorted.
...
+U_BOOT_CMD(
mgd, 5, 0, do_mg_disk_cmd,"mgd - mgine m[g]flash command\n",": mgine mflash IO mode (disk) command\n""\t- initialize : mgd init\n""\t- random read : mgd read [from] [to] [size]\n""\t\tbelow example read 256 bytes from 0x300000 of mflash\n""\t\tto 0xA0100000 of host memory\n""\t\tex) mgd read 0x300000 0xA0100000 256\n""\t- random write : mgd write [from] [to] [size]\n""\t\tex) mgd write 0xA0100000 0x300000 256\n""\t- sector read : mgd readsec [sector] [to] [counts]\n""\t\tbelow example read 10 sectors starts from 400 sector\n""\t\tto 0xA0100000\n""\t\tex) mgd readsec 400 0xA0100000 10\n""\t- sector write : mgd writesec [from] [sector] [counts]\n"+);
Please avoid using TAB characters here.
Also,pleas ebe terse - don;t give examples here. Rather add a README.mflash file to the doc/ directory.
diff --git a/common/cmd_nvedit.c b/common/cmd_nvedit.c index 85025da..4945aeb 100644 --- a/common/cmd_nvedit.c +++ b/common/cmd_nvedit.c @@ -59,8 +59,9 @@ DECLARE_GLOBAL_DATA_PTR; !defined(CONFIG_ENV_IS_IN_NAND) && \ !defined(CONFIG_ENV_IS_IN_ONENAND) && \ !defined(CONFIG_ENV_IS_IN_SPI_FLASH) && \
- !defined(CONFIG_ENV_IS_IN_MG_DISK) && \ !defined(CONFIG_ENV_IS_NOWHERE)
Please keep lists sorted.
-# error Define one of CONFIG_ENV_IS_IN_{NVRAM|EEPROM|FLASH|DATAFLASH|ONENAND|SPI_FLASH|NOWHERE} +# error Define one of CONFIG_ENV_IS_IN_{NVRAM|EEPROM|FLASH|DATAFLASH|ONENAND|SPI_FLASH|MG_DISK|NOWHERE}
Please keep lists sorted.
Also note that your mailer wrapped long lines here, thus corrupting the patch. Please fix your mailer.
And please avoid such long lines, too!
...
+void env_relocate_spec(void) +{
unsigned int err;err = mg_disk_read(CONFIG_ENV_ADDR, (u_char *) env_ptr, CONFIG_ENV_SIZE);if (err) {puts ("*** Warning - mg_disk_read error, using default environment\n\n");Line too long.
set_default_env();return;}if (crc32(0, env_ptr->data, ENV_SIZE) != env_ptr->crc) {puts ("*** Warning - CRC error, using default environment\n\n");set_default_env();}+}
+int saveenv(void) +{
unsigned int err;env_ptr->crc = crc32(0, env_ptr->data, ENV_SIZE);err = mg_disk_write(CONFIG_ENV_ADDR, (u_char *) env_ptr, CONFIG_ENV_SIZE);Line too long.
if (err)puts ("*** Warning - mg_disk_write error\n\n");return (int)err;The cast should not be needed here.
diff --git a/disk/part.c b/disk/part.c index e353cee..c007060 100644 --- a/disk/part.c +++ b/disk/part.c @@ -39,7 +39,8 @@ defined(CONFIG_CMD_SCSI) || \ defined(CONFIG_CMD_USB) || \ defined(CONFIG_MMC) || \
defined(CONFIG_SYSTEMACE) )
defined(CONFIG_SYSTEMACE) || \defined(CONFIG_CMD_MG_DISK))Please keep lists sorted.
@@ -95,7 +99,8 @@ block_dev_desc_t *get_dev(char* ifname, int dev) defined(CONFIG_CMD_SCSI) || \ defined(CONFIG_CMD_USB) || \ defined(CONFIG_MMC) || \
defined(CONFIG_SYSTEMACE) )
defined(CONFIG_SYSTEMACE) || \defined(CONFIG_CMD_MG_DISK))Ditto.
@@ -207,7 +212,8 @@ void dev_print (block_dev_desc_t *dev_desc) defined(CONFIG_CMD_SCSI) || \ defined(CONFIG_CMD_USB) || \ defined(CONFIG_MMC) || \
defined(CONFIG_SYSTEMACE) )
defined(CONFIG_SYSTEMACE) || \defined(CONFIG_CMD_MG_DISK))Ditto.
diff --git a/disk/part_amiga.c b/disk/part_amiga.c index 6c3d748..b4c2820 100644 --- a/disk/part_amiga.c +++ b/disk/part_amiga.c @@ -30,7 +30,8 @@ defined(CONFIG_CMD_SCSI) || \ defined(CONFIG_CMD_USB) || \ defined(CONFIG_MMC) || \
defined(CONFIG_SYSTEMACE) ) && defined(CONFIG_AMIGA_PARTITION)
defined(CONFIG_SYSTEMACE) || \defined(CONFIG_CMD_MG_DISK)) && defined(CONFIG_AMIGA_PARTITION)Ditto.
@@ -40,6 +41,8 @@ #define PRINTF(fmt, args...) #endif
+#define atoi(x) simple_strtoul(x,NULL,10)
Please avoid that.
struct block_header { u32 id; diff --git a/disk/part_dos.c b/disk/part_dos.c index 4d778ec..30dc39f 100644 --- a/disk/part_dos.c +++ b/disk/part_dos.c @@ -40,7 +40,8 @@ defined(CONFIG_CMD_SCSI) || \ defined(CONFIG_CMD_USB) || \ defined(CONFIG_MMC) || \
defined(CONFIG_SYSTEMACE) ) && defined(CONFIG_DOS_PARTITION)
defined(CONFIG_SYSTEMACE) || \defined(CONFIG_CMD_MG_DISK)) && defined(CONFIG_DOS_PARTITION)more incorrect sort order, even more following below.
diff --git a/drivers/block/mg_disk.c b/drivers/block/mg_disk.c new file mode 100644 index 0000000..06c9bd8 --- /dev/null +++ b/drivers/block/mg_disk.c @@ -0,0 +1,595 @@ +/*
- (C) Copyright 2009 mGine co.
- unsik Kim donari75@gmail.com
- See file CREDITS for list of people who contributed to this
- project.
- 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., 59 Temple Place, Suite 330, Boston,
- MA 02111-1307 USA
- */
+#include <common.h> +#include <malloc.h> +#include <part.h> +#include <ata.h> +#include "mg_disk_prv.h"
+#ifdef CONFIG_CMD_MG_DISK
+#undef printk +#define printk printf
Please don't.
+#undef KERN_ERR +#define KERN_ERR +#undef KERN_DEBUG +#define KERN_DEBUG +#undef KERN_INFO +#define KERN_INFO
Please don't.
+#undef inb +#undef inw +#undef outb +#undef outw
+#define inb(a) (*(volatile unsigned char *)(a)) +#define inw(a) (*(volatile unsigned short *)(a)) +#define outb(v, a) (*(volatile unsigned char *)(a) = (v)) +#define outw(v, a) (*(volatile unsigned short *)(a) = (v))
A strict NO, NO here. Please never do that.
Please do use theproper accessor functions that are needed for the respective architecture. PLain volatile pointer accesses are bound to fail. Never do that.
...
printk("%s: %s: status=0x%02x { ", name, msg, stat & 0xff);if (stat & MG_REG_STATUS_BIT_BUSY) printk("Busy ");if (stat & MG_REG_STATUS_BIT_READY) printk("DriveReady ");if (stat & MG_REG_STATUS_BIT_WRITE_FAULT) printk("WriteFault ");if (stat & MG_REG_STATUS_BIT_SEEK_DONE) printk("SeekComplete ");if (stat & MG_REG_STATUS_BIT_DATA_REQ) printk("DataRequest ");if (stat & MG_REG_STATUS_BIT_CORRECTED_ERROR) printk("CorrectedError ");if (stat & MG_REG_STATUS_BIT_ERROR) printk("Error ");Bad coding style. Please reformat.
printk("}\n");if ((stat & MG_REG_STATUS_BIT_ERROR)) {printk("%s: %s: error=0x%02x { ", name, msg, err & 0xff);if (err & MG_REG_ERR_BBK) printk("BadSector ");if (err & MG_REG_ERR_UNC) printk("UncorrectableError ");if (err & MG_REG_ERR_IDNF) printk("SectorIdNotFound ");if (err & MG_REG_ERR_ABRT) printk("DriveStatusError ");if (err & MG_REG_ERR_AMNF) printk("AddrMarkNotFound ");Ditto.
+static unsigned int msecs_to_hz (u32 msec) +{
u32 hz = CONFIG_SYS_HZ / 1000 * msec;if (!hz)hz = 1;return hz;This makes no sense. CONFIG_SYS_HZ is always 1000. Please consider it a constant.
...
from = get_timer(0);expire = from + msecs_to_hz(msec);I don;t understand y ou logic here. get_timer() is defined to operate in munits of millisconds. What's the msecs_to_hz() stuff gotta do here?
} while (cur < expire);You are aware of the overflow issues buried here, are you?
if (!err) {if((iop->field_valid & 1) == 0) {err = MG_ERR_TRANSLATION;} else {mg_ident_cpy((unsigned char*)mg_disk_dev.revision, iop->fw_rev,sizeof(mg_disk_dev.revision));
mg_ident_cpy((unsigned char*)mg_disk_dev.vendor, iop->model,sizeof(mg_disk_dev.vendor));
mg_ident_cpy((unsigned char*)mg_disk_dev.product, iop->serial_no,sizeof(mg_disk_dev.product));
Lines way too long, and wrapped by mailer.
+static int mg_disk_reset (void) +{
struct mg_drv_data *prv_data = MG_HOST->drv_data;s32 err;u8 init_status;/* hdd rst low */prv_data->mg_hdrst_pin(0);err = mg_wait(MG_REG_STATUS_BIT_BUSY, 300);if(err) return err;Please refoemat according to CodingStyle requirements.
if ((err = mg_wait(MG_STAT_READY, 3000))) {return err;}No braces for one-liners, please.
+static unsigned int mg_do_read_sects(void *buff, u32 sect_num, u32 sect_cnt) +{
u32 i, j, err;u8 *buff_ptr = buff;if ((err = mg_out(sect_num, sect_cnt, MG_CMD_RD))) {return err;}Ditto.
for (i = 0; i < sect_cnt; i++) {if ((err = mg_wait(MG_REG_STATUS_BIT_DATA_REQ, 3000))) {return err;}Ditto. And so on.
MG_DBG("%u (0x%8.8x) sector read", sect_num + i, (sect_num + i) *MG_SECTOR_SIZE);
Please check all line lengths!
diff --git a/lib_arm/board.c b/lib_arm/board.c index 2358beb..6a26bd2 100644 --- a/lib_arm/board.c +++ b/lib_arm/board.c @@ -48,6 +48,7 @@ #include <serial.h> #include <nand.h> #include <onenand_uboot.h> +#include <mg_disk.h>
#ifdef CONFIG_DRIVER_SMC91111 #include "../drivers/net/smc91111.h" @@ -348,6 +349,10 @@ void start_armboot (void) onenand_init(); #endif
+#if defined(CONFIG_CMD_MG_DISK)
mg_disk_init();+#endif
Please don't.
First it's wrong to add it for ARM only - what about other architectures that want to use that technology?
Second it's wrong to always call the init code. This shall be done only upon first access. See the longish discussion we had for example about how to handle the S-ATA init code - please see the archives.
Best regards,
Wolfgang Denk
-- DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd@denx.de What is wanted is not the will to believe, but the will to find out, which is the exact opposite. -- Bertrand Russell, "Skeptical Essays", 1928