u-boot/board/netphone/flash.c

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/*
* (C) Copyright 2000-2004
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <mpc8xx.h>
flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS]; /* info for FLASH chips */
/*-----------------------------------------------------------------------
* Functions
*/
static ulong flash_get_size(vu_long * addr, flash_info_t * info);
static int write_byte(flash_info_t * info, ulong dest, uchar data);
static void flash_get_offsets(ulong base, flash_info_t * info);
/*-----------------------------------------------------------------------
*/
unsigned long flash_init(void)
{
volatile immap_t *immap = (immap_t *) CONFIG_SYS_IMMR;
volatile memctl8xx_t *memctl = &immap->im_memctl;
unsigned long size;
#if CONFIG_NETPHONE_VERSION == 2
unsigned long size1;
#endif
int i;
/* Init: no FLASHes known */
for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; ++i)
flash_info[i].flash_id = FLASH_UNKNOWN;
size = flash_get_size((vu_long *) FLASH_BASE0_PRELIM, &flash_info[0]);
if (flash_info[0].flash_id == FLASH_UNKNOWN) {
printf ("## Unknown FLASH on Bank 0 - Size = 0x%08lx = %ld MB\n",
size, size << 20);
}
/* Remap FLASH according to real size */
memctl->memc_or0 = CONFIG_SYS_OR_TIMING_FLASH | (-size & 0xFFFF8000);
memctl->memc_br0 = (CONFIG_SYS_FLASH_BASE & BR_BA_MSK) | (memctl->memc_br0 & ~(BR_BA_MSK));
/* Re-do sizing to get full correct info */
size = flash_get_size((vu_long *) CONFIG_SYS_FLASH_BASE, &flash_info[0]);
flash_get_offsets(CONFIG_SYS_FLASH_BASE, &flash_info[0]);
/* monitor protection ON by default */
flash_protect(FLAG_PROTECT_SET,
CONFIG_SYS_FLASH_BASE, CONFIG_SYS_FLASH_BASE + monitor_flash_len - 1,
&flash_info[0]);
flash_protect ( FLAG_PROTECT_SET,
CONFIG_ENV_ADDR,
Redundant Environment: protect full sector size Several boards used different ways to specify the size of the protected area when enabling flash write protection for the sectors holding the environment variables: some used CONFIG_ENV_SIZE and CONFIG_ENV_SIZE_REDUND, some used CONFIG_ENV_SECT_SIZE, and some even a mix of both for the "normal" and the "redundant" areas. Normally, this makes no difference at all. However, things are different when you have to deal with boards that can come with different types of flash chips, which may have different sector sizes. Here we may have to chose CONFIG_ENV_SECT_SIZE such that it fits the biggest sector size, which may include several sectors on boards using the smaller sector flash types. In such a case, using CONFIG_ENV_SIZE or CONFIG_ENV_SIZE_REDUND to enable the protection may lead to the case that only the first of these sectors get protected, while the following ones aren't. This is no real problem, but it can be confusing for the user - especially on boards that use CONFIG_ENV_SECT_SIZE to protect the "normal" areas, while using CONFIG_ENV_SIZE_REDUND for the "redundant" area. To avoid such inconsistencies, I changed all sucn boards that I found to consistently use CONFIG_ENV_SECT_SIZE for protection. This should not cause any functional changes to the code. Signed-off-by: Wolfgang Denk <wd@denx.de> Cc: Paul Ruhland Cc: Pantelis Antoniou <panto@intracom.gr> Cc: Stefan Roese <sr@denx.de> Cc: Gary Jennejohn <garyj@denx.de> Cc: Dave Ellis <DGE@sixnetio.com> Acked-by: Stefan Roese <sr@denx.de>
2009-05-14 22:16:03 +00:00
CONFIG_ENV_ADDR + CONFIG_ENV_SECT_SIZE - 1,
&flash_info[0]);
#ifdef CONFIG_ENV_ADDR_REDUND
flash_protect ( FLAG_PROTECT_SET,
CONFIG_ENV_ADDR_REDUND,
Redundant Environment: protect full sector size Several boards used different ways to specify the size of the protected area when enabling flash write protection for the sectors holding the environment variables: some used CONFIG_ENV_SIZE and CONFIG_ENV_SIZE_REDUND, some used CONFIG_ENV_SECT_SIZE, and some even a mix of both for the "normal" and the "redundant" areas. Normally, this makes no difference at all. However, things are different when you have to deal with boards that can come with different types of flash chips, which may have different sector sizes. Here we may have to chose CONFIG_ENV_SECT_SIZE such that it fits the biggest sector size, which may include several sectors on boards using the smaller sector flash types. In such a case, using CONFIG_ENV_SIZE or CONFIG_ENV_SIZE_REDUND to enable the protection may lead to the case that only the first of these sectors get protected, while the following ones aren't. This is no real problem, but it can be confusing for the user - especially on boards that use CONFIG_ENV_SECT_SIZE to protect the "normal" areas, while using CONFIG_ENV_SIZE_REDUND for the "redundant" area. To avoid such inconsistencies, I changed all sucn boards that I found to consistently use CONFIG_ENV_SECT_SIZE for protection. This should not cause any functional changes to the code. Signed-off-by: Wolfgang Denk <wd@denx.de> Cc: Paul Ruhland Cc: Pantelis Antoniou <panto@intracom.gr> Cc: Stefan Roese <sr@denx.de> Cc: Gary Jennejohn <garyj@denx.de> Cc: Dave Ellis <DGE@sixnetio.com> Acked-by: Stefan Roese <sr@denx.de>
2009-05-14 22:16:03 +00:00
CONFIG_ENV_ADDR_REDUND + CONFIG_ENV_SECT_SIZE - 1,
&flash_info[0]);
#endif
flash_info[0].size = size;
#if CONFIG_NETPHONE_VERSION == 2
size1 = flash_get_size((vu_long *) FLASH_BASE4_PRELIM, &flash_info[1]);
if (size1 > 0) {
if (flash_info[1].flash_id == FLASH_UNKNOWN)
printf("## Unknown FLASH on Bank 1 - Size = 0x%08lx = %ld MB\n", size1, size1 << 20);
/* Remap FLASH according to real size */
memctl->memc_or4 = CONFIG_SYS_OR_TIMING_FLASH | (-size1 & 0xFFFF8000);
memctl->memc_br4 = (CONFIG_SYS_FLASH_BASE4 & BR_BA_MSK) | (memctl->memc_br4 & ~(BR_BA_MSK));
/* Re-do sizing to get full correct info */
size1 = flash_get_size((vu_long *) CONFIG_SYS_FLASH_BASE4, &flash_info[1]);
flash_get_offsets(CONFIG_SYS_FLASH_BASE4, &flash_info[1]);
size += size1;
} else
memctl->memc_br4 &= ~BR_V;
#endif
return (size);
}
/*-----------------------------------------------------------------------
*/
static void flash_get_offsets(ulong base, flash_info_t * info)
{
int i;
/* set up sector start address table */
if ((info->flash_id & FLASH_TYPEMASK) == FLASH_AM040) {
for (i = 0; i < info->sector_count; i++) {
info->start[i] = base + (i * 0x00010000);
}
} else if (info->flash_id & FLASH_BTYPE) {
/* set sector offsets for bottom boot block type */
info->start[0] = base + 0x00000000;
info->start[1] = base + 0x00004000;
info->start[2] = base + 0x00006000;
info->start[3] = base + 0x00008000;
for (i = 4; i < info->sector_count; i++) {
info->start[i] = base + (i * 0x00010000) - 0x00030000;
}
} else {
/* set sector offsets for top boot block type */
i = info->sector_count - 1;
info->start[i--] = base + info->size - 0x00004000;
info->start[i--] = base + info->size - 0x00006000;
info->start[i--] = base + info->size - 0x00008000;
for (; i >= 0; i--) {
info->start[i] = base + i * 0x00010000;
}
}
}
/*-----------------------------------------------------------------------
*/
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 & FLASH_VENDMASK) {
case FLASH_MAN_AMD:
printf("AMD ");
break;
case FLASH_MAN_FUJ:
printf("FUJITSU ");
break;
case FLASH_MAN_MX:
printf("MXIC ");
break;
default:
printf("Unknown Vendor ");
break;
}
switch (info->flash_id & FLASH_TYPEMASK) {
case FLASH_AM040:
printf("AM29LV040B (4 Mbit, bottom boot sect)\n");
break;
case FLASH_AM400B:
printf("AM29LV400B (4 Mbit, bottom boot sect)\n");
break;
case FLASH_AM400T:
printf("AM29LV400T (4 Mbit, top boot sector)\n");
break;
case FLASH_AM800B:
printf("AM29LV800B (8 Mbit, bottom boot sect)\n");
break;
case FLASH_AM800T:
printf("AM29LV800T (8 Mbit, top boot sector)\n");
break;
case FLASH_AM160B:
printf("AM29LV160B (16 Mbit, bottom boot sect)\n");
break;
case FLASH_AM160T:
printf("AM29LV160T (16 Mbit, top boot sector)\n");
break;
case FLASH_AM320B:
printf("AM29LV320B (32 Mbit, bottom boot sect)\n");
break;
case FLASH_AM320T:
printf("AM29LV320T (32 Mbit, top boot sector)\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");
}
/*-----------------------------------------------------------------------
*/
/*-----------------------------------------------------------------------
*/
/*
* The following code cannot be run from FLASH!
*/
static ulong flash_get_size(vu_long * addr, flash_info_t * info)
{
short i;
uchar mid;
uchar pid;
vu_char *caddr = (vu_char *) addr;
ulong base = (ulong) addr;
/* Write auto select command: read Manufacturer ID */
caddr[0x0555] = 0xAA;
caddr[0x02AA] = 0x55;
caddr[0x0555] = 0x90;
mid = caddr[0];
switch (mid) {
case (AMD_MANUFACT & 0xFF):
info->flash_id = FLASH_MAN_AMD;
break;
case (FUJ_MANUFACT & 0xFF):
info->flash_id = FLASH_MAN_FUJ;
break;
case (MX_MANUFACT & 0xFF):
info->flash_id = FLASH_MAN_MX;
break;
case (STM_MANUFACT & 0xFF):
info->flash_id = FLASH_MAN_STM;
break;
default:
info->flash_id = FLASH_UNKNOWN;
info->sector_count = 0;
info->size = 0;
return (0); /* no or unknown flash */
}
pid = caddr[1]; /* device ID */
switch (pid) {
case (AMD_ID_LV400T & 0xFF):
info->flash_id += FLASH_AM400T;
info->sector_count = 11;
info->size = 0x00080000;
break; /* => 512 kB */
case (AMD_ID_LV400B & 0xFF):
info->flash_id += FLASH_AM400B;
info->sector_count = 11;
info->size = 0x00080000;
break; /* => 512 kB */
case (AMD_ID_LV800T & 0xFF):
info->flash_id += FLASH_AM800T;
info->sector_count = 19;
info->size = 0x00100000;
break; /* => 1 MB */
case (AMD_ID_LV800B & 0xFF):
info->flash_id += FLASH_AM800B;
info->sector_count = 19;
info->size = 0x00100000;
break; /* => 1 MB */
case (AMD_ID_LV160T & 0xFF):
info->flash_id += FLASH_AM160T;
info->sector_count = 35;
info->size = 0x00200000;
break; /* => 2 MB */
case (AMD_ID_LV160B & 0xFF):
info->flash_id += FLASH_AM160B;
info->sector_count = 35;
info->size = 0x00200000;
break; /* => 2 MB */
case (AMD_ID_LV040B & 0xFF):
info->flash_id += FLASH_AM040;
info->sector_count = 8;
info->size = 0x00080000;
break;
case (STM_ID_M29W040B & 0xFF):
info->flash_id += FLASH_AM040;
info->sector_count = 8;
info->size = 0x00080000;
break;
#if 0 /* enable when device IDs are available */
case (AMD_ID_LV320T & 0xFF):
info->flash_id += FLASH_AM320T;
info->sector_count = 67;
info->size = 0x00400000;
break; /* => 4 MB */
case (AMD_ID_LV320B & 0xFF):
info->flash_id += FLASH_AM320B;
info->sector_count = 67;
info->size = 0x00400000;
break; /* => 4 MB */
#endif
default:
info->flash_id = FLASH_UNKNOWN;
return (0); /* => no or unknown flash */
}
printf(" ");
/* set up sector start address table */
if ((info->flash_id & FLASH_TYPEMASK) == FLASH_AM040) {
for (i = 0; i < info->sector_count; i++) {
info->start[i] = base + (i * 0x00010000);
}
} else if (info->flash_id & FLASH_BTYPE) {
/* set sector offsets for bottom boot block type */
info->start[0] = base + 0x00000000;
info->start[1] = base + 0x00004000;
info->start[2] = base + 0x00006000;
info->start[3] = base + 0x00008000;
for (i = 4; i < info->sector_count; i++) {
info->start[i] = base + (i * 0x00010000) - 0x00030000;
}
} else {
/* set sector offsets for top boot block type */
i = info->sector_count - 1;
info->start[i--] = base + info->size - 0x00004000;
info->start[i--] = base + info->size - 0x00006000;
info->start[i--] = base + info->size - 0x00008000;
for (; i >= 0; i--) {
info->start[i] = base + i * 0x00010000;
}
}
/* check for protected sectors */
for (i = 0; i < info->sector_count; i++) {
/* read sector protection: D0 = 1 if protected */
caddr = (volatile unsigned char *)(info->start[i]);
info->protect[i] = caddr[2] & 1;
}
/*
* Prevent writes to uninitialized FLASH.
*/
if (info->flash_id != FLASH_UNKNOWN) {
caddr = (vu_char *) info->start[0];
caddr[0x0555] = 0xAA;
caddr[0x02AA] = 0x55;
caddr[0x0555] = 0xF0;
udelay(20000);
}
return (info->size);
}
/*-----------------------------------------------------------------------
*/
int flash_erase(flash_info_t * info, int s_first, int s_last)
{
vu_char *addr = (vu_char *) (info->start[0]);
int flag, prot, sect, l_sect;
ulong start, now, last;
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;
}
if ((info->flash_id == FLASH_UNKNOWN) ||
(info->flash_id > FLASH_AMD_COMP)) {
printf("Can't erase unknown flash type %08lx - aborted\n", info->flash_id);
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");
}
l_sect = -1;
/* Disable interrupts which might cause a timeout here */
flag = disable_interrupts();
addr[0x0555] = 0xAA;
addr[0x02AA] = 0x55;
addr[0x0555] = 0x80;
addr[0x0555] = 0xAA;
addr[0x02AA] = 0x55;
/* Start erase on unprotected sectors */
for (sect = s_first; sect <= s_last; sect++) {
if (info->protect[sect] == 0) { /* not protected */
addr = (vu_char *) (info->start[sect]);
addr[0] = 0x30;
l_sect = sect;
}
}
/* re-enable interrupts if necessary */
if (flag)
enable_interrupts();
/* wait at least 80us - let's wait 1 ms */
udelay(1000);
/*
* We wait for the last triggered sector
*/
if (l_sect < 0)
goto DONE;
start = get_timer(0);
last = start;
addr = (vu_char *) (info->start[l_sect]);
while ((addr[0] & 0x80) != 0x80) {
if ((now = get_timer(start)) > CONFIG_SYS_FLASH_ERASE_TOUT) {
printf("Timeout\n");
return 1;
}
/* show that we're waiting */
if ((now - last) > 1000) { /* every second */
putc('.');
last = now;
}
}
DONE:
/* reset to read mode */
addr = (vu_char *) info->start[0];
addr[0] = 0xF0; /* reset bank */
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)
{
int rc;
while (cnt > 0) {
if ((rc = write_byte(info, addr++, *src++)) != 0) {
return (rc);
}
--cnt;
}
return (0);
}
/*-----------------------------------------------------------------------
* Write a word to Flash, returns:
* 0 - OK
* 1 - write timeout
* 2 - Flash not erased
*/
static int write_byte(flash_info_t * info, ulong dest, uchar data)
{
vu_char *addr = (vu_char *) (info->start[0]);
ulong start;
int flag;
/* Check if Flash is (sufficiently) erased */
if ((*((vu_char *) dest) & data) != data) {
return (2);
}
/* Disable interrupts which might cause a timeout here */
flag = disable_interrupts();
addr[0x0555] = 0xAA;
addr[0x02AA] = 0x55;
addr[0x0555] = 0xA0;
*((vu_char *) dest) = data;
/* re-enable interrupts if necessary */
if (flag)
enable_interrupts();
/* data polling for D7 */
start = get_timer(0);
while ((*((vu_char *) dest) & 0x80) != (data & 0x80)) {
if (get_timer(start) > CONFIG_SYS_FLASH_WRITE_TOUT) {
return (1);
}
}
return (0);
}