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-rw-r--r--common/cmd_eeprom.c265
1 files changed, 0 insertions, 265 deletions
diff --git a/common/cmd_eeprom.c b/common/cmd_eeprom.c
deleted file mode 100644
index 571240a99b..0000000000
--- a/common/cmd_eeprom.c
+++ /dev/null
@@ -1,265 +0,0 @@
-/*
- * (C) Copyright 2000, 2001
- * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
- *
- * SPDX-License-Identifier: GPL-2.0+
- */
-
-/*
- * Support for read and write access to EEPROM like memory devices. This
- * includes regular EEPROM as well as FRAM (ferroelectic nonvolaile RAM).
- * FRAM devices read and write data at bus speed. In particular, there is no
- * write delay. Also, there is no limit imposed on the number of bytes that can
- * be transferred with a single read or write.
- *
- * Use the following configuration options to ensure no unneeded performance
- * degradation (typical for EEPROM) is incured for FRAM memory:
- *
- * #define CONFIG_SYS_I2C_FRAM
- * #undef CONFIG_SYS_EEPROM_PAGE_WRITE_DELAY_MS
- *
- */
-
-#include <common.h>
-#include <config.h>
-#include <command.h>
-#include <i2c.h>
-
-#ifndef CONFIG_SYS_I2C_SPEED
-#define CONFIG_SYS_I2C_SPEED 50000
-#endif
-
-#ifndef CONFIG_SYS_EEPROM_PAGE_WRITE_DELAY_MS
-#define CONFIG_SYS_EEPROM_PAGE_WRITE_DELAY_MS 0
-#endif
-
-#ifndef CONFIG_SYS_EEPROM_PAGE_WRITE_BITS
-#define CONFIG_SYS_EEPROM_PAGE_WRITE_BITS 8
-#endif
-
-#define EEPROM_PAGE_SIZE (1 << CONFIG_SYS_EEPROM_PAGE_WRITE_BITS)
-#define EEPROM_PAGE_OFFSET(x) ((x) & (EEPROM_PAGE_SIZE - 1))
-
-/*
- * for CONFIG_SYS_I2C_EEPROM_ADDR_LEN == 2 (16-bit EEPROM address) offset is
- * 0x000nxxxx for EEPROM address selectors at n, offset xxxx in EEPROM.
- *
- * for CONFIG_SYS_I2C_EEPROM_ADDR_LEN == 1 (8-bit EEPROM page address) offset is
- * 0x00000nxx for EEPROM address selectors and page number at n.
- */
-#if !defined(CONFIG_SPI) || defined(CONFIG_ENV_EEPROM_IS_ON_I2C)
-#if !defined(CONFIG_SYS_I2C_EEPROM_ADDR_LEN) || \
- (CONFIG_SYS_I2C_EEPROM_ADDR_LEN < 1) || \
- (CONFIG_SYS_I2C_EEPROM_ADDR_LEN > 2)
-#error CONFIG_SYS_I2C_EEPROM_ADDR_LEN must be 1 or 2
-#endif
-#endif
-
-__weak int eeprom_write_enable(unsigned dev_addr, int state)
-{
- return 0;
-}
-
-void eeprom_init(int bus)
-{
- /* SPI EEPROM */
-#if defined(CONFIG_SPI) && !defined(CONFIG_ENV_EEPROM_IS_ON_I2C)
- spi_init_f();
-#endif
-
- /* I2C EEPROM */
-#if defined(CONFIG_HARD_I2C) || defined(CONFIG_SYS_I2C_SOFT)
-#if defined(CONFIG_SYS_I2C)
- if (bus >= 0)
- i2c_set_bus_num(bus);
-#endif
- i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
-#endif
-}
-
-static int eeprom_addr(unsigned dev_addr, unsigned offset, uchar *addr)
-{
- unsigned blk_off;
- int alen;
-
- blk_off = offset & 0xff; /* block offset */
-#if CONFIG_SYS_I2C_EEPROM_ADDR_LEN == 1
- addr[0] = offset >> 8; /* block number */
- addr[1] = blk_off; /* block offset */
- alen = 2;
-#else
- addr[0] = offset >> 16; /* block number */
- addr[1] = offset >> 8; /* upper address octet */
- addr[2] = blk_off; /* lower address octet */
- alen = 3;
-#endif /* CONFIG_SYS_I2C_EEPROM_ADDR_LEN */
-
- addr[0] |= dev_addr; /* insert device address */
-
- return alen;
-}
-
-static int eeprom_len(unsigned offset, unsigned end)
-{
- unsigned len = end - offset;
-
- /*
- * For a FRAM device there is no limit on the number of the
- * bytes that can be ccessed with the single read or write
- * operation.
- */
-#if !defined(CONFIG_SYS_I2C_FRAM)
- unsigned blk_off = offset & 0xff;
- unsigned maxlen = EEPROM_PAGE_SIZE - EEPROM_PAGE_OFFSET(blk_off);
-
- if (maxlen > I2C_RXTX_LEN)
- maxlen = I2C_RXTX_LEN;
-
- if (len > maxlen)
- len = maxlen;
-#endif
-
- return len;
-}
-
-static int eeprom_rw_block(unsigned offset, uchar *addr, unsigned alen,
- uchar *buffer, unsigned len, bool read)
-{
- int ret = 0;
-
- /* SPI */
-#if defined(CONFIG_SPI) && !defined(CONFIG_ENV_EEPROM_IS_ON_I2C)
- if (read)
- spi_read(addr, alen, buffer, len);
- else
- spi_write(addr, alen, buffer, len);
-#else /* I2C */
-
-#if defined(CONFIG_SYS_I2C_EEPROM_BUS)
- i2c_set_bus_num(CONFIG_SYS_I2C_EEPROM_BUS);
-#endif
-
- if (read)
- ret = i2c_read(addr[0], offset, alen - 1, buffer, len);
- else
- ret = i2c_write(addr[0], offset, alen - 1, buffer, len);
-
- if (ret)
- ret = 1;
-#endif
- return ret;
-}
-
-static int eeprom_rw(unsigned dev_addr, unsigned offset, uchar *buffer,
- unsigned cnt, bool read)
-{
- unsigned end = offset + cnt;
- unsigned alen, len;
- int rcode = 0;
- uchar addr[3];
-
- while (offset < end) {
- alen = eeprom_addr(dev_addr, offset, addr);
-
- len = eeprom_len(offset, end);
-
- rcode = eeprom_rw_block(offset, addr, alen, buffer, len, read);
-
- buffer += len;
- offset += len;
-
- if (!read)
- udelay(CONFIG_SYS_EEPROM_PAGE_WRITE_DELAY_MS * 1000);
- }
-
- return rcode;
-}
-
-int eeprom_read(unsigned dev_addr, unsigned offset, uchar *buffer, unsigned cnt)
-{
- /*
- * Read data until done or would cross a page boundary.
- * We must write the address again when changing pages
- * because the next page may be in a different device.
- */
- return eeprom_rw(dev_addr, offset, buffer, cnt, 1);
-}
-
-int eeprom_write(unsigned dev_addr, unsigned offset,
- uchar *buffer, unsigned cnt)
-{
- int ret;
-
- eeprom_write_enable(dev_addr, 1);
-
- /*
- * Write data until done or would cross a write page boundary.
- * We must write the address again when changing pages
- * because the address counter only increments within a page.
- */
- ret = eeprom_rw(dev_addr, offset, buffer, cnt, 0);
-
- eeprom_write_enable(dev_addr, 0);
- return ret;
-}
-
-static int do_eeprom(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
-{
- const char *const fmt =
- "\nEEPROM @0x%lX %s: addr %08lx off %04lx count %ld ... ";
- char * const *args = &argv[2];
- int rcode;
- ulong dev_addr, addr, off, cnt;
- int bus_addr;
-
- switch (argc) {
-#ifdef CONFIG_SYS_DEF_EEPROM_ADDR
- case 5:
- bus_addr = -1;
- dev_addr = CONFIG_SYS_DEF_EEPROM_ADDR;
- break;
-#endif
- case 6:
- bus_addr = -1;
- dev_addr = simple_strtoul(*args++, NULL, 16);
- break;
- case 7:
- bus_addr = simple_strtoul(*args++, NULL, 16);
- dev_addr = simple_strtoul(*args++, NULL, 16);
- break;
- default:
- return CMD_RET_USAGE;
- }
-
- addr = simple_strtoul(*args++, NULL, 16);
- off = simple_strtoul(*args++, NULL, 16);
- cnt = simple_strtoul(*args++, NULL, 16);
-
- eeprom_init(bus_addr);
-
- if (strcmp(argv[1], "read") == 0) {
- printf(fmt, dev_addr, argv[1], addr, off, cnt);
-
- rcode = eeprom_read(dev_addr, off, (uchar *)addr, cnt);
-
- puts("done\n");
- return rcode;
- } else if (strcmp(argv[1], "write") == 0) {
- printf(fmt, dev_addr, argv[1], addr, off, cnt);
-
- rcode = eeprom_write(dev_addr, off, (uchar *)addr, cnt);
-
- puts("done\n");
- return rcode;
- }
-
- return CMD_RET_USAGE;
-}
-
-U_BOOT_CMD(
- eeprom, 7, 1, do_eeprom,
- "EEPROM sub-system",
- "read <bus> <devaddr> addr off cnt\n"
- "eeprom write <bus> <devaddr> addr off cnt\n"
- " - read/write `cnt' bytes from `devaddr` EEPROM at offset `off'"
-)
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-15 05:18:33 +0000