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-rw-r--r--at25.c281
1 files changed, 0 insertions, 281 deletions
diff --git a/at25.c b/at25.c
deleted file mode 100644
index 803e7e4..0000000
--- a/at25.c
+++ /dev/null
@@ -1,281 +0,0 @@
-/*
- * This file is part of the flashrom project.
- *
- * Copyright (C) 2010 Carl-Daniel Hailfinger
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-#include "flash.h"
-#include "chipdrivers.h"
-#include "spi.h"
-
-/* Prettyprint the status register. Works for Atmel A25/A26 series. */
-
-static void spi_prettyprint_status_register_atmel_at25_wpen(uint8_t status)
-{
- msg_cdbg("Chip status register: Write Protect Enable (WPEN) "
- "is %sset\n", (status & (1 << 7)) ? "" : "not ");
-}
-
-static void spi_prettyprint_status_register_atmel_at25_srpl(uint8_t status)
-{
- msg_cdbg("Chip status register: Sector Protection Register Lock (SRPL) "
- "is %sset\n", (status & (1 << 7)) ? "" : "not ");
-}
-
-static void spi_prettyprint_status_register_atmel_at25_epewpp(uint8_t status)
-{
- msg_cdbg("Chip status register: Erase/Program Error (EPE) "
- "is %sset\n", (status & (1 << 5)) ? "" : "not ");
- msg_cdbg("Chip status register: WP# pin (WPP) "
- "is %sasserted\n", (status & (1 << 4)) ? "not " : "");
-}
-
-static void spi_prettyprint_status_register_atmel_at25_swp(uint8_t status)
-{
- msg_cdbg("Chip status register: Software Protection Status (SWP): ");
- switch (status & (3 << 2)) {
- case 0x0 << 2:
- msg_cdbg("no sectors are protected\n");
- break;
- case 0x1 << 2:
- msg_cdbg("some sectors are protected\n");
- /* FIXME: Read individual Sector Protection Registers. */
- break;
- case 0x3 << 2:
- msg_cdbg("all sectors are protected\n");
- break;
- default:
- msg_cdbg("reserved for future use\n");
- break;
- }
-}
-
-int spi_prettyprint_status_register_at25df(struct flashctx *flash)
-{
- uint8_t status;
-
- status = spi_read_status_register(flash);
- msg_cdbg("Chip status register is %02x\n", status);
-
- spi_prettyprint_status_register_atmel_at25_srpl(status);
- spi_prettyprint_status_register_bit(status, 6);
- spi_prettyprint_status_register_atmel_at25_epewpp(status);
- spi_prettyprint_status_register_atmel_at25_swp(status);
- spi_prettyprint_status_register_welwip(status);
- return 0;
-}
-
-int spi_prettyprint_status_register_at25df_sec(struct flashctx *flash)
-{
- /* FIXME: We should check the security lockdown. */
- msg_cdbg("Ignoring security lockdown (if present)\n");
- msg_cdbg("Ignoring status register byte 2\n");
- return spi_prettyprint_status_register_at25df(flash);
-}
-
-int spi_prettyprint_status_register_at25f512b(struct flashctx *flash)
-{
- uint8_t status;
-
- status = spi_read_status_register(flash);
- msg_cdbg("Chip status register is %02x\n", status);
-
- spi_prettyprint_status_register_atmel_at25_srpl(status);
- spi_prettyprint_status_register_bit(status, 6);
- spi_prettyprint_status_register_atmel_at25_epewpp(status);
- spi_prettyprint_status_register_bit(status, 3);
- spi_prettyprint_status_register_bp(status, 0);
- spi_prettyprint_status_register_welwip(status);
- return 0;
-}
-
-int spi_prettyprint_status_register_at25fs010(struct flashctx *flash)
-{
- uint8_t status;
-
- status = spi_read_status_register(flash);
- msg_cdbg("Chip status register is %02x\n", status);
-
- spi_prettyprint_status_register_atmel_at25_wpen(status);
- msg_cdbg("Chip status register: Bit 6 / Block Protect 4 (BP4) is "
- "%sset\n", (status & (1 << 6)) ? "" : "not ");
- msg_cdbg("Chip status register: Bit 5 / Block Protect 3 (BP3) is "
- "%sset\n", (status & (1 << 5)) ? "" : "not ");
- spi_prettyprint_status_register_bit(status, 4);
- msg_cdbg("Chip status register: Bit 3 / Block Protect 1 (BP1) is "
- "%sset\n", (status & (1 << 3)) ? "" : "not ");
- msg_cdbg("Chip status register: Bit 2 / Block Protect 0 (BP0) is "
- "%sset\n", (status & (1 << 2)) ? "" : "not ");
- /* FIXME: Pretty-print detailed sector protection status. */
- spi_prettyprint_status_register_welwip(status);
- return 0;
-}
-
-int spi_prettyprint_status_register_at25fs040(struct flashctx *flash)
-{
- uint8_t status;
-
- status = spi_read_status_register(flash);
- msg_cdbg("Chip status register is %02x\n", status);
-
- spi_prettyprint_status_register_atmel_at25_wpen(status);
- spi_prettyprint_status_register_bp(status, 4);
- /* FIXME: Pretty-print detailed sector protection status. */
- spi_prettyprint_status_register_welwip(status);
- return 0;
-}
-
-int spi_prettyprint_status_register_atmel_at26df081a(struct flashctx *flash)
-{
- uint8_t status;
-
- status = spi_read_status_register(flash);
- msg_cdbg("Chip status register is %02x\n", status);
-
- spi_prettyprint_status_register_atmel_at25_srpl(status);
- msg_cdbg("Chip status register: Sequential Program Mode Status (SPM) "
- "is %sset\n", (status & (1 << 6)) ? "" : "not ");
- spi_prettyprint_status_register_atmel_at25_epewpp(status);
- spi_prettyprint_status_register_atmel_at25_swp(status);
- spi_prettyprint_status_register_welwip(status);
- return 0;
-}
-
-int spi_disable_blockprotect_at25df(struct flashctx *flash)
-{
- uint8_t status;
- int result;
-
- status = spi_read_status_register(flash);
- /* If block protection is disabled, stop here. */
- if ((status & (3 << 2)) == 0)
- return 0;
-
- msg_cdbg("Some block protection in effect, disabling... ");
- if (status & (1 << 7)) {
- msg_cdbg("Need to disable Sector Protection Register Lock\n");
- if ((status & (1 << 4)) == 0) {
- msg_cerr("WP# pin is active, disabling "
- "write protection is impossible.\n");
- return 1;
- }
- /* All bits except bit 7 (SPRL) are readonly. */
- result = spi_write_status_register(flash, status & ~(1 << 7));
- if (result) {
- msg_cerr("spi_write_status_register failed.\n");
- return result;
- }
-
- }
- /* Global unprotect. Make sure to mask SPRL as well. */
- result = spi_write_status_register(flash, status & ~0xbc);
- if (result) {
- msg_cerr("spi_write_status_register failed.\n");
- return result;
- }
- status = spi_read_status_register(flash);
- if ((status & (3 << 2)) != 0) {
- msg_cerr("Block protection could not be disabled!\n");
- return 1;
- }
- msg_cdbg("done.\n");
- return 0;
-}
-
-int spi_disable_blockprotect_at25df_sec(struct flashctx *flash)
-{
- /* FIXME: We should check the security lockdown. */
- msg_cinfo("Ignoring security lockdown (if present)\n");
- return spi_disable_blockprotect_at25df(flash);
-}
-
-int spi_disable_blockprotect_at25f512b(struct flashctx *flash)
-{
- /* spi_disable_blockprotect_at25df is not really the right way to do
- * this, but the side effects of said function work here as well.
- */
- return spi_disable_blockprotect_at25df(flash);
-}
-
-int spi_disable_blockprotect_at25fs010(struct flashctx *flash)
-{
- uint8_t status;
- int result;
-
- status = spi_read_status_register(flash);
- /* If block protection is disabled, stop here. */
- if ((status & 0x6c) == 0)
- return 0;
-
- msg_cdbg("Some block protection in effect, disabling... ");
- if (status & (1 << 7)) {
- msg_cdbg("Need to disable Status Register Write Protect\n");
- /* Clear bit 7 (WPEN). */
- result = spi_write_status_register(flash, status & ~(1 << 7));
- if (result) {
- msg_cerr("spi_write_status_register failed.\n");
- return result;
- }
- }
- /* Global unprotect. Make sure to mask WPEN as well. */
- result = spi_write_status_register(flash, status & ~0xec);
- if (result) {
- msg_cerr("spi_write_status_register failed.\n");
- return result;
- }
- status = spi_read_status_register(flash);
- if ((status & 0x6c) != 0) {
- msg_cerr("Block protection could not be disabled!\n");
- return 1;
- }
- msg_cdbg("done.\n");
- return 0;
-}
-
-int spi_disable_blockprotect_at25fs040(struct flashctx *flash)
-{
- uint8_t status;
- int result;
-
- status = spi_read_status_register(flash);
- /* If block protection is disabled, stop here. */
- if ((status & 0x7c) == 0)
- return 0;
-
- msg_cdbg("Some block protection in effect, disabling... ");
- if (status & (1 << 7)) {
- msg_cdbg("Need to disable Status Register Write Protect\n");
- /* Clear bit 7 (WPEN). */
- result = spi_write_status_register(flash, status & ~(1 << 7));
- if (result) {
- msg_cerr("spi_write_status_register failed.\n");
- return result;
- }
- }
- /* Global unprotect. Make sure to mask WPEN as well. */
- result = spi_write_status_register(flash, status & ~0xfc);
- if (result) {
- msg_cerr("spi_write_status_register failed.\n");
- return result;
- }
- status = spi_read_status_register(flash);
- if ((status & 0x7c) != 0) {
- msg_cerr("Block protection could not be disabled!\n");
- return 1;
- }
- msg_cdbg("done.\n");
- return 0;
-}
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