+++ /dev/null
-// 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
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