mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-14 08:57:58 +00:00
1a4596601f
Signed-off-by: Wolfgang Denk <wd@denx.de> [trini: Fixup common/cmd_io.c] Signed-off-by: Tom Rini <trini@ti.com>
386 lines
9.4 KiB
C
386 lines
9.4 KiB
C
/*
|
|
* (C) Copyright 2000
|
|
* Marius Groeger <mgroeger@sysgo.de>
|
|
* Sysgo Real-Time Solutions, GmbH <www.elinos.com>
|
|
*
|
|
* (C) Copyright 2000
|
|
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
|
|
*
|
|
* Flash Routines for AM290[48]0B devices
|
|
*
|
|
*--------------------------------------------------------------------
|
|
* SPDX-License-Identifier: GPL-2.0+
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <mpc8xx.h>
|
|
|
|
/* flash hardware ids */
|
|
#define VENDOR_AMD 0x0001
|
|
#define AMD_29DL323C_B 0x2253
|
|
|
|
/* Define this to include autoselect sequence in flash_init(). Does NOT
|
|
* work when executing from flash itself, so this should be turned
|
|
* on only when debugging the RAM version.
|
|
*/
|
|
#undef WITH_AUTOSELECT
|
|
|
|
flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS]; /* info for FLASH chips */
|
|
|
|
#if 1
|
|
#define D(x)
|
|
#else
|
|
#define D(x) printf x
|
|
#endif
|
|
|
|
/*-----------------------------------------------------------------------
|
|
* Functions
|
|
*/
|
|
|
|
static unsigned char write_ull(flash_info_t *info,
|
|
unsigned long address,
|
|
volatile unsigned long long data);
|
|
|
|
/* from flash_asm.S */
|
|
extern void ull_write(unsigned long long volatile *address,
|
|
unsigned long long volatile *data);
|
|
extern void ull_read(unsigned long long volatile *address,
|
|
unsigned long long volatile *data);
|
|
|
|
/*-----------------------------------------------------------------------
|
|
*/
|
|
|
|
unsigned long flash_init (void)
|
|
{
|
|
int i;
|
|
ulong addr;
|
|
|
|
#ifdef WITH_AUTOSELECT
|
|
{
|
|
unsigned long long *f_addr = (unsigned long long *)PHYS_FLASH;
|
|
unsigned long long f_command, vendor, device;
|
|
/* Perform Autoselect */
|
|
f_command = 0x00AA00AA00AA00AAULL;
|
|
ull_write(&f_addr[0x555], &f_command);
|
|
f_command = 0x0055005500550055ULL;
|
|
ull_write(&f_addr[0x2AA], &f_command);
|
|
f_command = 0x0090009000900090ULL;
|
|
ull_write(&f_addr[0x555], &f_command);
|
|
ull_read(&f_addr[0], &vendor);
|
|
vendor &= 0xffff;
|
|
ull_read(&f_addr[1], &device);
|
|
device &= 0xffff;
|
|
f_command = 0x00F000F000F000F0ULL;
|
|
ull_write(&f_addr[0x555], &f_command);
|
|
if (vendor != VENDOR_AMD || device != AMD_29DL323C_B)
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
/* Init: no FLASHes known */
|
|
for (i=0; i<CONFIG_SYS_MAX_FLASH_BANKS; ++i) {
|
|
flash_info[i].flash_id = FLASH_UNKNOWN;
|
|
}
|
|
|
|
/* 1st bank: 8 x 32 KB sectors */
|
|
flash_info[0].flash_id = VENDOR_AMD << 16 | AMD_29DL323C_B;
|
|
flash_info[0].sector_count = 8;
|
|
flash_info[0].size = flash_info[0].sector_count * 32 * 1024;
|
|
addr = PHYS_FLASH;
|
|
for(i = 0; i < flash_info[0].sector_count; i++) {
|
|
flash_info[0].start[i] = addr;
|
|
addr += flash_info[0].size / flash_info[0].sector_count;
|
|
}
|
|
/* 1st bank: 63 x 256 KB sectors */
|
|
flash_info[1].flash_id = VENDOR_AMD << 16 | AMD_29DL323C_B;
|
|
flash_info[1].sector_count = 63;
|
|
flash_info[1].size = flash_info[1].sector_count * 256 * 1024;
|
|
for(i = 0; i < flash_info[1].sector_count; i++) {
|
|
flash_info[1].start[i] = addr;
|
|
addr += flash_info[1].size / flash_info[1].sector_count;
|
|
}
|
|
|
|
/*
|
|
* protect monitor and environment sectors
|
|
*/
|
|
|
|
#if CONFIG_SYS_MONITOR_BASE >= PHYS_FLASH
|
|
flash_protect(FLAG_PROTECT_SET,
|
|
CONFIG_SYS_MONITOR_BASE,
|
|
CONFIG_SYS_MONITOR_BASE+monitor_flash_len-1,
|
|
&flash_info[0]);
|
|
flash_protect(FLAG_PROTECT_SET,
|
|
CONFIG_SYS_MONITOR_BASE,
|
|
CONFIG_SYS_MONITOR_BASE+monitor_flash_len-1,
|
|
&flash_info[1]);
|
|
#endif
|
|
|
|
#if defined(CONFIG_ENV_IS_IN_FLASH) && defined(CONFIG_ENV_ADDR)
|
|
# ifndef CONFIG_ENV_SIZE
|
|
# define CONFIG_ENV_SIZE CONFIG_ENV_SECT_SIZE
|
|
# endif
|
|
flash_protect(FLAG_PROTECT_SET,
|
|
CONFIG_ENV_ADDR,
|
|
CONFIG_ENV_ADDR + CONFIG_ENV_SIZE - 1,
|
|
&flash_info[0]);
|
|
flash_protect(FLAG_PROTECT_SET,
|
|
CONFIG_ENV_ADDR,
|
|
CONFIG_ENV_ADDR + CONFIG_ENV_SIZE - 1,
|
|
&flash_info[1]);
|
|
#endif
|
|
|
|
return flash_info[0].size + flash_info[1].size;
|
|
}
|
|
|
|
/*-----------------------------------------------------------------------
|
|
*/
|
|
void flash_print_info (flash_info_t *info)
|
|
{
|
|
int i;
|
|
|
|
if (info->flash_id == FLASH_UNKNOWN) {
|
|
printf ("missing or unknown FLASH type\n");
|
|
return;
|
|
}
|
|
|
|
switch (info->flash_id >> 16) {
|
|
case VENDOR_AMD:
|
|
printf ("AMD ");
|
|
break;
|
|
default:
|
|
printf ("Unknown Vendor ");
|
|
break;
|
|
}
|
|
|
|
switch (info->flash_id & FLASH_TYPEMASK) {
|
|
case AMD_29DL323C_B:
|
|
printf ("AM29DL323CB (32 Mbit)\n");
|
|
break;
|
|
default:
|
|
printf ("Unknown Chip Type\n");
|
|
break;
|
|
}
|
|
|
|
printf (" Size: %ld MB in %d Sectors\n",
|
|
info->size >> 20, info->sector_count);
|
|
|
|
printf (" Sector Start Addresses:");
|
|
for (i=0; i<info->sector_count; ++i) {
|
|
if ((i % 5) == 0)
|
|
printf ("\n ");
|
|
printf (" %08lX%s",
|
|
info->start[i],
|
|
info->protect[i] ? " (RO)" : " "
|
|
);
|
|
}
|
|
printf ("\n");
|
|
return;
|
|
}
|
|
|
|
/*-----------------------------------------------------------------------
|
|
*/
|
|
|
|
int flash_erase (flash_info_t *info, int s_first, int s_last)
|
|
{
|
|
int flag, prot, sect, l_sect;
|
|
ulong start;
|
|
unsigned long long volatile *f_addr;
|
|
unsigned long long volatile f_command;
|
|
|
|
if ((s_first < 0) || (s_first > s_last)) {
|
|
if (info->flash_id == FLASH_UNKNOWN) {
|
|
printf ("- missing\n");
|
|
} else {
|
|
printf ("- no sectors to erase\n");
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
prot = 0;
|
|
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 {
|
|
printf ("\n");
|
|
}
|
|
|
|
f_addr = (unsigned long long *)info->start[0];
|
|
f_command = 0x00AA00AA00AA00AAULL;
|
|
ull_write(&f_addr[0x555], &f_command);
|
|
f_command = 0x0055005500550055ULL;
|
|
ull_write(&f_addr[0x2AA], &f_command);
|
|
f_command = 0x0080008000800080ULL;
|
|
ull_write(&f_addr[0x555], &f_command);
|
|
f_command = 0x00AA00AA00AA00AAULL;
|
|
ull_write(&f_addr[0x555], &f_command);
|
|
f_command = 0x0055005500550055ULL;
|
|
ull_write(&f_addr[0x2AA], &f_command);
|
|
|
|
/* Disable interrupts which might cause a timeout here */
|
|
flag = disable_interrupts();
|
|
|
|
/* Start erase on unprotected sectors */
|
|
for (l_sect = -1, sect = s_first; sect<=s_last; sect++) {
|
|
if (info->protect[sect] == 0) { /* not protected */
|
|
|
|
f_addr =
|
|
(unsigned long long *)(info->start[sect]);
|
|
f_command = 0x0030003000300030ULL;
|
|
ull_write(f_addr, &f_command);
|
|
l_sect = sect;
|
|
}
|
|
}
|
|
|
|
/* re-enable interrupts if necessary */
|
|
if (flag)
|
|
enable_interrupts();
|
|
|
|
start = get_timer (0);
|
|
do
|
|
{
|
|
if (get_timer(start) > CONFIG_SYS_FLASH_ERASE_TOUT)
|
|
{ /* write reset command, command address is unimportant */
|
|
/* this command turns the flash back to read mode */
|
|
f_addr =
|
|
(unsigned long long *)(info->start[l_sect]);
|
|
f_command = 0x00F000F000F000F0ULL;
|
|
ull_write(f_addr, &f_command);
|
|
printf (" timeout\n");
|
|
return 1;
|
|
}
|
|
} while(*f_addr != 0xFFFFFFFFFFFFFFFFULL);
|
|
|
|
printf (" done\n");
|
|
return 0;
|
|
}
|
|
|
|
/*-----------------------------------------------------------------------
|
|
* Copy memory to flash, returns:
|
|
* 0 - OK
|
|
* 1 - write timeout
|
|
* 2 - Flash not erased
|
|
*/
|
|
|
|
int write_buff (flash_info_t *info, uchar *src, ulong addr, ulong cnt)
|
|
{
|
|
unsigned long cp, wp;
|
|
unsigned long long data;
|
|
int i, l, rc;
|
|
|
|
wp = (addr & ~7); /* get lower long long aligned address */
|
|
|
|
/*
|
|
* handle unaligned start bytes
|
|
*/
|
|
if ((l = addr - wp) != 0) {
|
|
data = 0;
|
|
for (i=0, cp=wp; i<l; ++i, ++cp) {
|
|
data = (data << 8) | (*(uchar *)cp);
|
|
}
|
|
for (; i<8 && cnt>0; ++i) {
|
|
data = (data << 8) | *src++;
|
|
--cnt;
|
|
++cp;
|
|
}
|
|
for (; cnt==0 && i<8; ++i, ++cp) {
|
|
data = (data << 8) | (*(uchar *)cp);
|
|
}
|
|
|
|
if ((rc = write_ull(info, wp, data)) != 0) {
|
|
return rc;
|
|
}
|
|
wp += 4;
|
|
}
|
|
|
|
/*
|
|
* handle long long aligned part
|
|
*/
|
|
while (cnt >= 8) {
|
|
data = 0;
|
|
for (i=0; i<8; ++i) {
|
|
data = (data << 8) | *src++;
|
|
}
|
|
if ((rc = write_ull(info, wp, data)) != 0) {
|
|
return rc;
|
|
}
|
|
wp += 8;
|
|
cnt -= 8;
|
|
}
|
|
|
|
if (cnt == 0) {
|
|
return ERR_OK;
|
|
}
|
|
|
|
/*
|
|
* handle unaligned tail bytes
|
|
*/
|
|
data = 0;
|
|
for (i=0, cp=wp; i<8 && cnt>0; ++i, ++cp) {
|
|
data = (data << 8) | *src++;
|
|
--cnt;
|
|
}
|
|
for (; i<8; ++i, ++cp) {
|
|
data = (data << 8) | (*(uchar *)cp);
|
|
}
|
|
|
|
return write_ull(info, wp, data);
|
|
}
|
|
|
|
/*---------------------------------------------------------------------------
|
|
*
|
|
* FUNCTION NAME: write_ull
|
|
*
|
|
* DESCRIPTION: writes 8 bytes to flash
|
|
*
|
|
* EXTERNAL EFFECT: nothing
|
|
*
|
|
* PARAMETERS: 32 bit long pointer to address, 64 bit long pointer to data
|
|
*
|
|
* RETURNS: 0 if OK, 1 if timeout, 4 if parameter error
|
|
*--------------------------------------------------------------------------*/
|
|
|
|
static unsigned char write_ull(flash_info_t *info,
|
|
unsigned long address,
|
|
volatile unsigned long long data)
|
|
{
|
|
static unsigned long long f_command;
|
|
static unsigned long long *f_addr;
|
|
ulong start;
|
|
|
|
/* address muss be 8-aligned! */
|
|
if (address & 0x7)
|
|
return ERR_ALIGN;
|
|
|
|
f_addr = (unsigned long long *)info->start[0];
|
|
f_command = 0x00AA00AA00AA00AAULL;
|
|
ull_write(&f_addr[0x555], &f_command);
|
|
f_command = 0x0055005500550055ULL;
|
|
ull_write(&f_addr[0x2AA], &f_command);
|
|
f_command = 0x00A000A000A000A0ULL;
|
|
ull_write(&f_addr[0x555], &f_command);
|
|
|
|
f_addr = (unsigned long long *)address;
|
|
f_command = data;
|
|
ull_write(f_addr, &f_command);
|
|
|
|
start = get_timer (0);
|
|
do
|
|
{
|
|
if (get_timer(start) > CONFIG_SYS_FLASH_WRITE_TOUT)
|
|
{
|
|
/* write reset command, command address is unimportant */
|
|
/* this command turns the flash back to read mode */
|
|
f_addr = (unsigned long long *)info->start[0];
|
|
f_command = 0x00F000F000F000F0ULL;
|
|
ull_write(f_addr, &f_command);
|
|
return ERR_TIMOUT;
|
|
}
|
|
} while(*((unsigned long long *)address) != data);
|
|
|
|
return 0;
|
|
}
|