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/*
* (C) Copyright 2009
* ST-Ericsson, <www.stericsson.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
*/
/* --- includes ----------------------------------------------------------- */
#include "common.h" /* XXX: Arrgghh! "common.h" includes <common.h> */
#include <command.h>
#include "mmc.h"
#include "emmc.h"
#include "gpio.h"
#include <asm/boottime.h>
#define PIB_EMMC_ADDR 0x00
/* ========================================================================
Name: init_emmc
Description: init embedded multimedia card interface
======================================================================== */
int emmc_init(u8 card_num)
{
t_mmc_error mmc_error;
t_mmc_error response;
gpio_error gpioerror;
int error;
#ifndef CONFIG_U8500_V1
/* Initialize the base address of eMMC */
mmc_error = mmc_init(card_num, CFG_EMMC_BASE);
if (MMC_OK != mmc_error)
{
printf("emmc_init() %d \n", mmc_error);
goto end;
}
/* Initialize the gpio alternate function for eMMC */
struct gpio_register *p_gpio_register = (void *) IO_ADDRESS(CFG_GPIO_6_BASE);
p_gpio_register -> gpio_dats |= 0x0000FFE0;
p_gpio_register -> gpio_pdis &= ~0x0000FFE0;
//enable the alternate function of EMMC
gpioerror = gpio_altfuncenable(GPIO_ALT_EMMC, "EMMC");
if(gpioerror != GPIO_OK)
{
printf("emmc_init() gpio_altfuncenable %d failed\n", gpioerror);
goto end;
}
#else
/* Initialize the base address of PoP eMMC */
mmc_error = mmc_init(card_num, CFG_POP_EMMC_BASE);
if (MMC_OK != mmc_error)
{
printf("emmc_init() %d \n", mmc_error);
goto end;
}
//enable the alternate function of PoP EMMC
gpioerror = gpio_altfuncenable(GPIO_ALT_POP_EMMC, "EMMC");
if (gpioerror != GPIO_OK) {
printf("emmc_init() gpio_altfuncenable %d failed \n",
gpioerror);
goto end;
}
#endif
//Power-on the controller
response = mmc_poweron(card_num);
if (response != MMC_OK)
{
printf("Error in eMMC power on, response is %d\n",response);
goto end;
}
// Initialise the cards,get CID and CSD on the bus
response = mmc_initializeCards(card_num);
if (response != MMC_OK)
{
printf(" Error in eMMC initialization\n");
goto end;
}
error = emmc_write_pib();
if(error)
printf("PIB info writing into eMMC failed\n");
printf("eMMC done\n");
return 0;
end:
#ifndef CONFIG_U8500_V1
gpio_altfuncdisable(GPIO_ALT_EMMC, "EMMC");
#else
gpio_altfuncdisable(GPIO_ALT_POP_EMMC, "EMMC");
#endif
mmc_poweroff(card_num);
return 1;
}
int emmc_write_pib(void)
{
int i;
t_mmc_error mmc_error;
u32 block_offset = PIB_EMMC_ADDR;
u8 emmc_last_sector[512];
u8 card_num = 4;
for (i = 0; i < 0x1BF; i++) {
emmc_last_sector[i] = 0;
}
emmc_last_sector[0x1BF] = 0x03;
emmc_last_sector[0x1C0] = 0xD0;
emmc_last_sector[0x1C1] = 0xFF;
emmc_last_sector[0x1C2] = 0x83;
emmc_last_sector[0x1C3] = 0x03;
emmc_last_sector[0x1C4] = 0xD0;
emmc_last_sector[0x1C5] = 0xFF;
emmc_last_sector[0x1C6] = 0x00;
emmc_last_sector[0x1C7] = 0x00;
emmc_last_sector[0x1C8] = 0x0A;
emmc_last_sector[0x1C9] = 0x00;
emmc_last_sector[0x1CA] = 0x00;
emmc_last_sector[0x1CB] = 0x40;
emmc_last_sector[0x1CC] = 0x00;
emmc_last_sector[0x1CD] = 0x00;
emmc_last_sector[0x1CE] = 0x00;
emmc_last_sector[0x1CF] = 0x03;
emmc_last_sector[0x1D0] = 0xD0;
emmc_last_sector[0x1D1] = 0xFF;
emmc_last_sector[0x1D2] = 0x83;
emmc_last_sector[0x1D3] = 0x03;
emmc_last_sector[0x1D4] = 0xD0;
emmc_last_sector[0x1D5] = 0xFF;
emmc_last_sector[0x1D6] = 0x00;
emmc_last_sector[0x1D7] = 0x40;
emmc_last_sector[0x1D8] = 0x0A;
emmc_last_sector[0x1D9] = 0x00;
emmc_last_sector[0x1DA] = 0x00;
emmc_last_sector[0x1DB] = 0x00;
emmc_last_sector[0x1DC] = 0x08;
emmc_last_sector[0x1DD] = 0x00;
emmc_last_sector[0x1DE] = 0x00;
emmc_last_sector[0x1DF] = 0x03;
emmc_last_sector[0x1E0] = 0xD0;
emmc_last_sector[0x1E1] = 0xFF;
emmc_last_sector[0x1E2] = 0x83;
emmc_last_sector[0x1E3] = 0x03;
emmc_last_sector[0x1E4] = 0xD0;
emmc_last_sector[0x1E5] = 0xFF;
emmc_last_sector[0x1E6] = 0x00;
emmc_last_sector[0x1E7] = 0x40;
emmc_last_sector[0x1E8] = 0x12;
emmc_last_sector[0x1E9] = 0x00;
emmc_last_sector[0x1EA] = 0x00;
emmc_last_sector[0x1EB] = 0xC0;
emmc_last_sector[0x1EC] = 0x22;
emmc_last_sector[0x1ED] = 0x00;
emmc_last_sector[0x1EE] = 0x00;
emmc_last_sector[0x1EF] = 0x03;
emmc_last_sector[0x1F0] = 0xD0;
emmc_last_sector[0x1F1] = 0xFF;
emmc_last_sector[0x1F2] = 0x0C;
emmc_last_sector[0x1F3] = 0x03;
emmc_last_sector[0x1F4] = 0xD0;
emmc_last_sector[0x1F5] = 0xFF;
emmc_last_sector[0x1F6] = 0x00;
emmc_last_sector[0x1F7] = 0x00;
emmc_last_sector[0x1F8] = 0x35;
emmc_last_sector[0x1F9] = 0x00;
emmc_last_sector[0x1FA] = 0x00;
emmc_last_sector[0x1FB] = 0xA0;
emmc_last_sector[0x1FC] = 0xB9;
emmc_last_sector[0x1FD] = 0x00;
emmc_last_sector[0x1FE] = 0x55;
emmc_last_sector[0x1FF] = 0xAA;
/* HACK required for HREF board as erase block size = 512KB */
/*
mmc_error = mmc_erase(card_num, 0x0, 0x1FF);
if (mmc_error != MMC_OK) {
printf(" eMMC erase failed in PIB \n");
return 1;
}
*/
mmc_error =
mmc_writeblocks(card_num, block_offset, (u32 *) emmc_last_sector,
512, 1);
if (mmc_error != MMC_OK) {
printf(" eMMC PIB write failed \n");
return 1;
}
return 0;
}
int emmc_erase(u32 start, u32 end)
{
t_mmc_error mmc_error;
u8 card_num = 4;
printf("emmc erase start \n");
mmc_error = mmc_erase(card_num, start, end);
if (mmc_error != MMC_OK) {
printf(" eMMC erase failed \n");
return 1;
}
printf("emmc erase done \n");
return 0;
}
int emmc_read(u32 block_offset, u32 read_buffer, u32 filesize)
{
t_mmc_error mmc_error;
u32 remaining;
u8 card_num = 4;
u8 *mem_address = (u8 *) read_buffer;
u32 n=filesize,blocks;
remaining = filesize;
printf(" eMMC read start filesize=0x%x \n", filesize);
blocks = (n%512==0)?(n/512):(n/512)+1;
while(blocks>=8)
{
mmc_error = mmc_readblocks(card_num, block_offset, (u32 *) mem_address, 512, 8);
if (mmc_error != MMC_OK)
{
printf(" eMMC read blocks failed \n");
return 1;
}
block_offset += 4096;
mem_address += 4096;
blocks -=8;
remaining -= 4096;
}
if(blocks)
{
mmc_error = mmc_readblocks(card_num, block_offset, (u32 *) mem_address, 512, blocks);
if (mmc_error != MMC_OK)
{
printf(" eMMC read blocks failed \n");
return 1;
}
}
printf(" eMMC read done \n");
return 0;
}
int emmc_write(u32 block_offset, u32 write_buffer, u32 filesize)
{
t_mmc_error mmc_error;
u32 remaining;
u8 card_num = 4;
u8 *mem_address = (u8 *) write_buffer;
u32 n=filesize,blocks;
remaining = filesize;
printf(" eMMC write start filesize=0x%x \n", filesize);
blocks = (n%512==0)?(n/512):(n/512)+1;
while(blocks>=8)
{
mmc_error = mmc_writeblocks(card_num, block_offset, (u32 *) mem_address,512, 8);
if (mmc_error != MMC_OK)
{
printf(" eMMC write blocks failed \n");
return 1;
}
block_offset += 4096;
mem_address += 4096;
blocks -=8;
remaining -= 4096;
}
if(blocks)
{
mmc_error = mmc_writeblocks(card_num, block_offset, (u32 *) mem_address,512, blocks);
if (mmc_error != MMC_OK)
{
printf(" eMMC write blocks failed \n");
return 1;
}
}
printf(" eMMC write done \n");
return 0;
}
/*
* command line commands
*/
#ifdef CONFIG_CMD_EMMC
int do_emmc_erase (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
{
u32 start_address;
u32 end_address;
int load_result = 1;
u32 error_name = 0;
start_address = simple_strtoul (argv[1],0,16);
end_address = simple_strtoul (argv[2],0,16);
printf("emmc_erase :: start address = %x end_address=0x%x\n",start_address,end_address);
load_result = emmc_erase(start_address,end_address);
if (load_result != 0)
{
error_name = (unsigned long) (-load_result);
printf("emmc_erase error : failed \n");
}
return(0);
}
U_BOOT_CMD(
emmc_erase, 3, 0, do_emmc_erase,
"- erase the eMMC flash \n",
"start_address- start address of the eMMC block\n"
"end_address- end address of the eMMC block\n"
);
int do_emmc_read (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
{
u32 ram_address;
u32 block_offset;
u32 filesize;
int load_result = 1;
u32 error_name = 0;
ram_address = simple_strtoul (argv[1],0,16);
block_offset = simple_strtoul (argv[2],0,16);
filesize = simple_strtoul (argv[3],0,16);
boottime_tag("load_image");
printf("emmc_read :: ram address = 0x%x block address=0x%x \n",ram_address,block_offset);
load_result = emmc_read(block_offset,ram_address,filesize);
if (load_result != 0)
{
boottime_remove_last();
error_name = (unsigned long) (-load_result);
printf("emmc_read error : in reading data from eMMC block \n");
}
return(0);
}
U_BOOT_CMD(
emmc_read, 4, 0, do_emmc_read,
"- read file from emmc flash \n",
"ram_address - read from eMMC and copy into ram address\n"
"block_offset - address to read the file from the eMMC block \n"
"filesize - size of the file \n"
);
int do_emmc_write (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
{
u32 ram_address;
u32 block_offset;
u32 filesize;
int load_result = 1;
u32 error_name = 0;
ram_address = simple_strtoul (argv[1],0,16);
block_offset = simple_strtoul (argv[2],0,16);
filesize = simple_strtoul (argv[3],0,16);
printf("emmc_write :: ram address = %x block address=0x%x \n",ram_address,block_offset);
load_result = emmc_write(block_offset,ram_address,filesize);
if (load_result != 0)
{
error_name = (unsigned long) (-load_result);
printf("emmc_read error : in writing data into eMMC block \n");
}
return(0);
}
U_BOOT_CMD(
emmc_write, 4, 0, do_emmc_write,
"- write file from emmc flash \n",
"ram_address - write to eMMC by copying from ram address\n"
"block_offset - address to write the file into the eMMC block \n"
"filesize - size of the file \n"
);
#endif /* CONFIG_CMD_EMMC */
/* ------------------------------- End of file ---------------------------- */
|
