mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-21 02:33:07 +00:00
c05ed00afb
Move this uncommon header out of the common header. Signed-off-by: Simon Glass <sjg@chromium.org>
565 lines
14 KiB
C
565 lines
14 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* (C) Copyright 2009
|
|
* Vipin Kumar, ST Microelectronics, vipin.kumar@st.com.
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <flash.h>
|
|
#include <linux/delay.h>
|
|
#include <linux/err.h>
|
|
#include <linux/mtd/st_smi.h>
|
|
|
|
#include <asm/io.h>
|
|
#include <asm/arch/hardware.h>
|
|
|
|
#if defined(CONFIG_MTD_NOR_FLASH)
|
|
|
|
static struct smi_regs *const smicntl =
|
|
(struct smi_regs * const)CONFIG_SYS_SMI_BASE;
|
|
static ulong bank_base[CONFIG_SYS_MAX_FLASH_BANKS] =
|
|
CONFIG_SYS_FLASH_ADDR_BASE;
|
|
flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS];
|
|
|
|
/* data structure to maintain flash ids from different vendors */
|
|
struct flash_device {
|
|
char *name;
|
|
u8 erase_cmd;
|
|
u32 device_id;
|
|
u32 pagesize;
|
|
unsigned long sectorsize;
|
|
unsigned long size_in_bytes;
|
|
};
|
|
|
|
#define FLASH_ID(n, es, id, psize, ssize, size) \
|
|
{ \
|
|
.name = n, \
|
|
.erase_cmd = es, \
|
|
.device_id = id, \
|
|
.pagesize = psize, \
|
|
.sectorsize = ssize, \
|
|
.size_in_bytes = size \
|
|
}
|
|
|
|
/*
|
|
* List of supported flash devices.
|
|
* Currently the erase_cmd field is not used in this driver.
|
|
*/
|
|
static struct flash_device flash_devices[] = {
|
|
FLASH_ID("st m25p16" , 0xd8, 0x00152020, 0x100, 0x10000, 0x200000),
|
|
FLASH_ID("st m25p32" , 0xd8, 0x00162020, 0x100, 0x10000, 0x400000),
|
|
FLASH_ID("st m25p64" , 0xd8, 0x00172020, 0x100, 0x10000, 0x800000),
|
|
FLASH_ID("st m25p128" , 0xd8, 0x00182020, 0x100, 0x40000, 0x1000000),
|
|
FLASH_ID("st m25p05" , 0xd8, 0x00102020, 0x80 , 0x8000 , 0x10000),
|
|
FLASH_ID("st m25p10" , 0xd8, 0x00112020, 0x80 , 0x8000 , 0x20000),
|
|
FLASH_ID("st m25p20" , 0xd8, 0x00122020, 0x100, 0x10000, 0x40000),
|
|
FLASH_ID("st m25p40" , 0xd8, 0x00132020, 0x100, 0x10000, 0x80000),
|
|
FLASH_ID("st m25p80" , 0xd8, 0x00142020, 0x100, 0x10000, 0x100000),
|
|
FLASH_ID("st m45pe10" , 0xd8, 0x00114020, 0x100, 0x10000, 0x20000),
|
|
FLASH_ID("st m45pe20" , 0xd8, 0x00124020, 0x100, 0x10000, 0x40000),
|
|
FLASH_ID("st m45pe40" , 0xd8, 0x00134020, 0x100, 0x10000, 0x80000),
|
|
FLASH_ID("st m45pe80" , 0xd8, 0x00144020, 0x100, 0x10000, 0x100000),
|
|
FLASH_ID("sp s25fl004" , 0xd8, 0x00120201, 0x100, 0x10000, 0x80000),
|
|
FLASH_ID("sp s25fl008" , 0xd8, 0x00130201, 0x100, 0x10000, 0x100000),
|
|
FLASH_ID("sp s25fl016" , 0xd8, 0x00140201, 0x100, 0x10000, 0x200000),
|
|
FLASH_ID("sp s25fl032" , 0xd8, 0x00150201, 0x100, 0x10000, 0x400000),
|
|
FLASH_ID("sp s25fl064" , 0xd8, 0x00160201, 0x100, 0x10000, 0x800000),
|
|
FLASH_ID("mac 25l512" , 0xd8, 0x001020C2, 0x010, 0x10000, 0x10000),
|
|
FLASH_ID("mac 25l1005" , 0xd8, 0x001120C2, 0x010, 0x10000, 0x20000),
|
|
FLASH_ID("mac 25l2005" , 0xd8, 0x001220C2, 0x010, 0x10000, 0x40000),
|
|
FLASH_ID("mac 25l4005" , 0xd8, 0x001320C2, 0x010, 0x10000, 0x80000),
|
|
FLASH_ID("mac 25l4005a" , 0xd8, 0x001320C2, 0x010, 0x10000, 0x80000),
|
|
FLASH_ID("mac 25l8005" , 0xd8, 0x001420C2, 0x010, 0x10000, 0x100000),
|
|
FLASH_ID("mac 25l1605" , 0xd8, 0x001520C2, 0x100, 0x10000, 0x200000),
|
|
FLASH_ID("mac 25l1605a" , 0xd8, 0x001520C2, 0x010, 0x10000, 0x200000),
|
|
FLASH_ID("mac 25l3205" , 0xd8, 0x001620C2, 0x100, 0x10000, 0x400000),
|
|
FLASH_ID("mac 25l3205a" , 0xd8, 0x001620C2, 0x100, 0x10000, 0x400000),
|
|
FLASH_ID("mac 25l6405" , 0xd8, 0x001720C2, 0x100, 0x10000, 0x800000),
|
|
FLASH_ID("wbd w25q128" , 0xd8, 0x001840EF, 0x100, 0x10000, 0x1000000),
|
|
};
|
|
|
|
/*
|
|
* smi_wait_xfer_finish - Wait until TFF is set in status register
|
|
* @timeout: timeout in milliseconds
|
|
*
|
|
* Wait until TFF is set in status register
|
|
*/
|
|
static int smi_wait_xfer_finish(int timeout)
|
|
{
|
|
ulong start = get_timer(0);
|
|
|
|
while (get_timer(start) < timeout) {
|
|
if (readl(&smicntl->smi_sr) & TFF)
|
|
return 0;
|
|
|
|
/* Try after 10 ms */
|
|
udelay(10);
|
|
};
|
|
|
|
return -1;
|
|
}
|
|
|
|
/*
|
|
* smi_read_id - Read flash id
|
|
* @info: flash_info structure pointer
|
|
* @banknum: bank number
|
|
*
|
|
* Read the flash id present at bank #banknum
|
|
*/
|
|
static unsigned int smi_read_id(flash_info_t *info, int banknum)
|
|
{
|
|
unsigned int value;
|
|
|
|
writel(readl(&smicntl->smi_cr1) | SW_MODE, &smicntl->smi_cr1);
|
|
writel(READ_ID, &smicntl->smi_tr);
|
|
writel((banknum << BANKSEL_SHIFT) | SEND | TX_LEN_1 | RX_LEN_3,
|
|
&smicntl->smi_cr2);
|
|
|
|
if (smi_wait_xfer_finish(XFER_FINISH_TOUT))
|
|
return -EIO;
|
|
|
|
value = (readl(&smicntl->smi_rr) & 0x00FFFFFF);
|
|
|
|
writel(readl(&smicntl->smi_sr) & ~TFF, &smicntl->smi_sr);
|
|
writel(readl(&smicntl->smi_cr1) & ~SW_MODE, &smicntl->smi_cr1);
|
|
|
|
return value;
|
|
}
|
|
|
|
/*
|
|
* flash_get_size - Detect the SMI flash by reading the ID.
|
|
* @base: Base address of the flash area bank #banknum
|
|
* @banknum: Bank number
|
|
*
|
|
* Detect the SMI flash by reading the ID. Initializes the flash_info structure
|
|
* with size, sector count etc.
|
|
*/
|
|
static ulong flash_get_size(ulong base, int banknum)
|
|
{
|
|
flash_info_t *info = &flash_info[banknum];
|
|
int value;
|
|
int i;
|
|
|
|
value = smi_read_id(info, banknum);
|
|
|
|
if (value < 0) {
|
|
printf("Flash id could not be read\n");
|
|
return 0;
|
|
}
|
|
|
|
/* Matches chip-id to entire list of 'serial-nor flash' ids */
|
|
for (i = 0; i < ARRAY_SIZE(flash_devices); i++) {
|
|
if (flash_devices[i].device_id == value) {
|
|
info->size = flash_devices[i].size_in_bytes;
|
|
info->flash_id = value;
|
|
info->start[0] = base;
|
|
info->sector_count =
|
|
info->size/flash_devices[i].sectorsize;
|
|
|
|
return info->size;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* smi_read_sr - Read status register of SMI
|
|
* @bank: bank number
|
|
*
|
|
* This routine will get the status register of the flash chip present at the
|
|
* given bank
|
|
*/
|
|
static int smi_read_sr(int bank)
|
|
{
|
|
u32 ctrlreg1, val;
|
|
|
|
/* store the CTRL REG1 state */
|
|
ctrlreg1 = readl(&smicntl->smi_cr1);
|
|
|
|
/* Program SMI in HW Mode */
|
|
writel(readl(&smicntl->smi_cr1) & ~(SW_MODE | WB_MODE),
|
|
&smicntl->smi_cr1);
|
|
|
|
/* Performing a RSR instruction in HW mode */
|
|
writel((bank << BANKSEL_SHIFT) | RD_STATUS_REG, &smicntl->smi_cr2);
|
|
|
|
if (smi_wait_xfer_finish(XFER_FINISH_TOUT))
|
|
return -1;
|
|
|
|
val = readl(&smicntl->smi_sr);
|
|
|
|
/* Restore the CTRL REG1 state */
|
|
writel(ctrlreg1, &smicntl->smi_cr1);
|
|
|
|
return val;
|
|
}
|
|
|
|
/*
|
|
* smi_wait_till_ready - Wait till last operation is over.
|
|
* @bank: bank number shifted.
|
|
* @timeout: timeout in milliseconds.
|
|
*
|
|
* This routine checks for WIP(write in progress)bit in Status register(SMSR-b0)
|
|
* The routine checks for #timeout loops, each at interval of 1 milli-second.
|
|
* If successful the routine returns 0.
|
|
*/
|
|
static int smi_wait_till_ready(int bank, int timeout)
|
|
{
|
|
int sr;
|
|
ulong start = get_timer(0);
|
|
|
|
/* One chip guarantees max 5 msec wait here after page writes,
|
|
but potentially three seconds (!) after page erase. */
|
|
while (get_timer(start) < timeout) {
|
|
sr = smi_read_sr(bank);
|
|
if ((sr >= 0) && (!(sr & WIP_BIT)))
|
|
return 0;
|
|
|
|
/* Try again after 10 usec */
|
|
udelay(10);
|
|
} while (timeout--);
|
|
|
|
printf("SMI controller is still in wait, timeout=%d\n", timeout);
|
|
return -EIO;
|
|
}
|
|
|
|
/*
|
|
* smi_write_enable - Enable the flash to do write operation
|
|
* @bank: bank number
|
|
*
|
|
* Set write enable latch with Write Enable command.
|
|
* Returns negative if error occurred.
|
|
*/
|
|
static int smi_write_enable(int bank)
|
|
{
|
|
u32 ctrlreg1;
|
|
u32 start;
|
|
int timeout = WMODE_TOUT;
|
|
int sr;
|
|
|
|
/* Store the CTRL REG1 state */
|
|
ctrlreg1 = readl(&smicntl->smi_cr1);
|
|
|
|
/* Program SMI in H/W Mode */
|
|
writel(readl(&smicntl->smi_cr1) & ~SW_MODE, &smicntl->smi_cr1);
|
|
|
|
/* Give the Flash, Write Enable command */
|
|
writel((bank << BANKSEL_SHIFT) | WE, &smicntl->smi_cr2);
|
|
|
|
if (smi_wait_xfer_finish(XFER_FINISH_TOUT))
|
|
return -1;
|
|
|
|
/* Restore the CTRL REG1 state */
|
|
writel(ctrlreg1, &smicntl->smi_cr1);
|
|
|
|
start = get_timer(0);
|
|
while (get_timer(start) < timeout) {
|
|
sr = smi_read_sr(bank);
|
|
if ((sr >= 0) && (sr & (1 << (bank + WM_SHIFT))))
|
|
return 0;
|
|
|
|
/* Try again after 10 usec */
|
|
udelay(10);
|
|
};
|
|
|
|
return -1;
|
|
}
|
|
|
|
/*
|
|
* smi_init - SMI initialization routine
|
|
*
|
|
* SMI initialization routine. Sets SMI control register1.
|
|
*/
|
|
void smi_init(void)
|
|
{
|
|
/* Setting the fast mode values. SMI working at 166/4 = 41.5 MHz */
|
|
writel(HOLD1 | FAST_MODE | BANK_EN | DSEL_TIME | PRESCAL4,
|
|
&smicntl->smi_cr1);
|
|
}
|
|
|
|
/*
|
|
* smi_sector_erase - Erase flash sector
|
|
* @info: flash_info structure pointer
|
|
* @sector: sector number
|
|
*
|
|
* Set write enable latch with Write Enable command.
|
|
* Returns negative if error occurred.
|
|
*/
|
|
static int smi_sector_erase(flash_info_t *info, unsigned int sector)
|
|
{
|
|
int bank;
|
|
unsigned int sect_add;
|
|
unsigned int instruction;
|
|
|
|
switch (info->start[0]) {
|
|
case SMIBANK0_BASE:
|
|
bank = BANK0;
|
|
break;
|
|
case SMIBANK1_BASE:
|
|
bank = BANK1;
|
|
break;
|
|
case SMIBANK2_BASE:
|
|
bank = BANK2;
|
|
break;
|
|
case SMIBANK3_BASE:
|
|
bank = BANK3;
|
|
break;
|
|
default:
|
|
return -1;
|
|
}
|
|
|
|
sect_add = sector * (info->size / info->sector_count);
|
|
instruction = ((sect_add >> 8) & 0x0000FF00) | SECTOR_ERASE;
|
|
|
|
writel(readl(&smicntl->smi_sr) & ~(ERF1 | ERF2), &smicntl->smi_sr);
|
|
|
|
/* Wait until finished previous write command. */
|
|
if (smi_wait_till_ready(bank, CONFIG_SYS_FLASH_ERASE_TOUT))
|
|
return -EBUSY;
|
|
|
|
/* Send write enable, before erase commands. */
|
|
if (smi_write_enable(bank))
|
|
return -EIO;
|
|
|
|
/* Put SMI in SW mode */
|
|
writel(readl(&smicntl->smi_cr1) | SW_MODE, &smicntl->smi_cr1);
|
|
|
|
/* Send Sector Erase command in SW Mode */
|
|
writel(instruction, &smicntl->smi_tr);
|
|
writel((bank << BANKSEL_SHIFT) | SEND | TX_LEN_4,
|
|
&smicntl->smi_cr2);
|
|
if (smi_wait_xfer_finish(XFER_FINISH_TOUT))
|
|
return -EIO;
|
|
|
|
if (smi_wait_till_ready(bank, CONFIG_SYS_FLASH_ERASE_TOUT))
|
|
return -EBUSY;
|
|
|
|
/* Put SMI in HW mode */
|
|
writel(readl(&smicntl->smi_cr1) & ~SW_MODE,
|
|
&smicntl->smi_cr1);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* smi_write - Write to SMI flash
|
|
* @src_addr: source buffer
|
|
* @dst_addr: destination buffer
|
|
* @length: length to write in bytes
|
|
* @bank: bank base address
|
|
*
|
|
* Write to SMI flash
|
|
*/
|
|
static int smi_write(unsigned int *src_addr, unsigned int *dst_addr,
|
|
unsigned int length, ulong bank_addr)
|
|
{
|
|
u8 *src_addr8 = (u8 *)src_addr;
|
|
u8 *dst_addr8 = (u8 *)dst_addr;
|
|
int banknum;
|
|
int i;
|
|
|
|
switch (bank_addr) {
|
|
case SMIBANK0_BASE:
|
|
banknum = BANK0;
|
|
break;
|
|
case SMIBANK1_BASE:
|
|
banknum = BANK1;
|
|
break;
|
|
case SMIBANK2_BASE:
|
|
banknum = BANK2;
|
|
break;
|
|
case SMIBANK3_BASE:
|
|
banknum = BANK3;
|
|
break;
|
|
default:
|
|
return -1;
|
|
}
|
|
|
|
if (smi_wait_till_ready(banknum, CONFIG_SYS_FLASH_WRITE_TOUT))
|
|
return -EBUSY;
|
|
|
|
/* Set SMI in Hardware Mode */
|
|
writel(readl(&smicntl->smi_cr1) & ~SW_MODE, &smicntl->smi_cr1);
|
|
|
|
if (smi_write_enable(banknum))
|
|
return -EIO;
|
|
|
|
/* Perform the write command */
|
|
for (i = 0; i < length; i += 4) {
|
|
if (((ulong) (dst_addr) % SFLASH_PAGE_SIZE) == 0) {
|
|
if (smi_wait_till_ready(banknum,
|
|
CONFIG_SYS_FLASH_WRITE_TOUT))
|
|
return -EBUSY;
|
|
|
|
if (smi_write_enable(banknum))
|
|
return -EIO;
|
|
}
|
|
|
|
if (length < 4) {
|
|
int k;
|
|
|
|
/*
|
|
* Handle special case, where length < 4 (redundant env)
|
|
*/
|
|
for (k = 0; k < length; k++)
|
|
*dst_addr8++ = *src_addr8++;
|
|
} else {
|
|
/* Normal 32bit write */
|
|
*dst_addr++ = *src_addr++;
|
|
}
|
|
|
|
if ((readl(&smicntl->smi_sr) & (ERF1 | ERF2)))
|
|
return -EIO;
|
|
}
|
|
|
|
if (smi_wait_till_ready(banknum, CONFIG_SYS_FLASH_WRITE_TOUT))
|
|
return -EBUSY;
|
|
|
|
writel(readl(&smicntl->smi_sr) & ~(WCF), &smicntl->smi_sr);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* write_buff - Write to SMI flash
|
|
* @info: flash info structure
|
|
* @src: source buffer
|
|
* @dest_addr: destination buffer
|
|
* @length: length to write in words
|
|
*
|
|
* Write to SMI flash
|
|
*/
|
|
int write_buff(flash_info_t *info, uchar *src, ulong dest_addr, ulong length)
|
|
{
|
|
return smi_write((unsigned int *)src, (unsigned int *)dest_addr,
|
|
length, info->start[0]);
|
|
}
|
|
|
|
/*
|
|
* flash_init - SMI flash initialization
|
|
*
|
|
* SMI flash initialization
|
|
*/
|
|
unsigned long flash_init(void)
|
|
{
|
|
unsigned long size = 0;
|
|
int i, j;
|
|
|
|
smi_init();
|
|
|
|
for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; i++) {
|
|
flash_info[i].flash_id = FLASH_UNKNOWN;
|
|
size += flash_info[i].size = flash_get_size(bank_base[i], i);
|
|
}
|
|
|
|
for (j = 0; j < CONFIG_SYS_MAX_FLASH_BANKS; j++) {
|
|
for (i = 1; i < flash_info[j].sector_count; i++)
|
|
flash_info[j].start[i] =
|
|
flash_info[j].start[i - 1] +
|
|
flash_info->size / flash_info->sector_count;
|
|
|
|
}
|
|
|
|
return size;
|
|
}
|
|
|
|
/*
|
|
* flash_print_info - Print SMI flash information
|
|
*
|
|
* Print SMI flash information
|
|
*/
|
|
void flash_print_info(flash_info_t *info)
|
|
{
|
|
int i;
|
|
if (info->flash_id == FLASH_UNKNOWN) {
|
|
puts("missing or unknown FLASH type\n");
|
|
return;
|
|
}
|
|
|
|
if (info->size >= 0x100000)
|
|
printf(" Size: %ld MB in %d Sectors\n",
|
|
info->size >> 20, info->sector_count);
|
|
else
|
|
printf(" Size: %ld KB in %d Sectors\n",
|
|
info->size >> 10, info->sector_count);
|
|
|
|
puts(" Sector Start Addresses:");
|
|
for (i = 0; i < info->sector_count; ++i) {
|
|
#ifdef CONFIG_SYS_FLASH_EMPTY_INFO
|
|
int size;
|
|
int erased;
|
|
u32 *flash;
|
|
|
|
/*
|
|
* Check if whole sector is erased
|
|
*/
|
|
size = (info->size) / (info->sector_count);
|
|
flash = (u32 *) info->start[i];
|
|
size = size / sizeof(int);
|
|
|
|
while ((size--) && (*flash++ == ~0))
|
|
;
|
|
|
|
size++;
|
|
if (size)
|
|
erased = 0;
|
|
else
|
|
erased = 1;
|
|
|
|
if ((i % 5) == 0)
|
|
printf("\n");
|
|
|
|
printf(" %08lX%s%s",
|
|
info->start[i],
|
|
erased ? " E" : " ", info->protect[i] ? "RO " : " ");
|
|
#else
|
|
if ((i % 5) == 0)
|
|
printf("\n ");
|
|
printf(" %08lX%s",
|
|
info->start[i], info->protect[i] ? " (RO) " : " ");
|
|
#endif
|
|
}
|
|
putc('\n');
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* flash_erase - Erase SMI flash
|
|
*
|
|
* Erase SMI flash
|
|
*/
|
|
int flash_erase(flash_info_t *info, int s_first, int s_last)
|
|
{
|
|
int rcode = 0;
|
|
int prot = 0;
|
|
flash_sect_t sect;
|
|
|
|
if ((s_first < 0) || (s_first > s_last)) {
|
|
puts("- no sectors to erase\n");
|
|
return 1;
|
|
}
|
|
|
|
for (sect = s_first; sect <= s_last; ++sect) {
|
|
if (info->protect[sect])
|
|
prot++;
|
|
}
|
|
if (prot) {
|
|
printf("- Warning: %d protected sectors will not be erased!\n",
|
|
prot);
|
|
} else {
|
|
putc('\n');
|
|
}
|
|
|
|
for (sect = s_first; sect <= s_last; sect++) {
|
|
if (info->protect[sect] == 0) {
|
|
if (smi_sector_erase(info, sect))
|
|
rcode = 1;
|
|
else
|
|
putc('.');
|
|
}
|
|
}
|
|
puts(" done\n");
|
|
return rcode;
|
|
}
|
|
#endif
|