mail archive of the barebox mailing list
 help / color / mirror / Atom feed
From: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
To: barebox@lists.infradead.org
Cc: Nicolas Ferre <nicolas.ferre@atmel.com>,
	Patrice Vilchez <patrice.vilchez@atmel.com>
Subject: [PATCH 02/12] cfi_flash: add Atmel real protect flash support
Date: Fri, 26 Nov 2010 20:52:31 +0100	[thread overview]
Message-ID: <1290801161-2417-2-git-send-email-plagnioj@jcrosoft.com> (raw)
In-Reply-To: <20101126194353.GH26540@game.jcrosoft.org>

based on U-Boot

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
---
 drivers/nor/cfi_flash.h     |    4 ++++
 drivers/nor/cfi_flash_amd.c |   17 +++++++++++++++++
 2 files changed, 21 insertions(+), 0 deletions(-)

diff --git a/drivers/nor/cfi_flash.h b/drivers/nor/cfi_flash.h
index ee1a6f0..047a035 100644
--- a/drivers/nor/cfi_flash.h
+++ b/drivers/nor/cfi_flash.h
@@ -121,6 +121,10 @@ extern struct cfi_cmd_set cfi_cmd_set_amd;
 #define AMD_ADDR_START		((info->portwidth == FLASH_CFI_8BIT) ? 0xAAA : 0x555)
 #define AMD_ADDR_ACK		((info->portwidth == FLASH_CFI_8BIT) ? 0x555 : 0x2AA)
 
+#define ATM_CMD_UNLOCK_SECT		0x70
+#define ATM_CMD_SOFTLOCK_START		0x80
+#define ATM_CMD_LOCK_SECT		0x40
+
 #define FLASH_OFFSET_MANUFACTURER_ID	0x00
 #define FLASH_OFFSET_DEVICE_ID		0x01
 #define FLASH_OFFSET_DEVICE_ID2		0x0E
diff --git a/drivers/nor/cfi_flash_amd.c b/drivers/nor/cfi_flash_amd.c
index b10f7b2..dffd6f0 100644
--- a/drivers/nor/cfi_flash_amd.c
+++ b/drivers/nor/cfi_flash_amd.c
@@ -135,6 +135,23 @@ static int amd_flash_write_cfibuffer (struct flash_info *info, ulong dest, const
 
 static int amd_flash_real_protect (struct flash_info *info, long sector, int prot)
 {
+	if (info->manufacturer_id != (uchar)ATM_MANUFACT)
+		return 0;
+
+	if (prot) {
+		flash_unlock_seq (info);
+		flash_write_cmd (info, 0, AMD_ADDR_START,
+				 ATM_CMD_SOFTLOCK_START);
+		flash_unlock_seq (info);
+		flash_write_cmd (info, sector, 0, ATM_CMD_LOCK_SECT);
+	} else {
+		flash_write_cmd (info, 0, AMD_ADDR_START,
+				 AMD_CMD_UNLOCK_START);
+		if (info->device_id == ATM_ID_BV6416)
+			flash_write_cmd (info, sector, 0,
+					 ATM_CMD_UNLOCK_SECT);
+	}
+
 	return 0;
 }
 
-- 
1.7.1


_______________________________________________
barebox mailing list
barebox@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/barebox

  parent reply	other threads:[~2010-11-26 19:56 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-11-26 19:43 [PATCH 0/12] cfi_flash: improvment Jean-Christophe PLAGNIOL-VILLARD
2010-11-26 19:52 ` [PATCH 01/12] cfi_flash: move intel real protect flash support to cfi_flash_intel.c Jean-Christophe PLAGNIOL-VILLARD
2010-11-26 19:52 ` Jean-Christophe PLAGNIOL-VILLARD [this message]
2010-11-26 19:52 ` [PATCH 03/12] cfi_flash: move flash_read_uchar from inline to noinline Jean-Christophe PLAGNIOL-VILLARD
2010-11-26 19:52 ` [PATCH 04/12] cfi_flash: use amd and standard reset flash command at probing Jean-Christophe PLAGNIOL-VILLARD
2010-11-26 19:52 ` [PATCH 05/12] cfi_flash: synchronize command offsets with Linux CFI driver Jean-Christophe PLAGNIOL-VILLARD
2010-11-26 19:52 ` [PATCH 06/12] cfi_flash: update manufacturer id flash support Jean-Christophe PLAGNIOL-VILLARD
2010-11-26 19:52 ` [PATCH 07/12] cfi_flash: Introduce read and write accessors Jean-Christophe PLAGNIOL-VILLARD
2010-11-26 19:52 ` [PATCH 08/12] cfi_flash: Read whole QRY structure in one go Jean-Christophe PLAGNIOL-VILLARD
2010-11-26 19:52 ` [PATCH 09/12] cfi_flash: do not reset flash when probe fails Jean-Christophe PLAGNIOL-VILLARD
2010-11-26 19:52 ` [PATCH 10/12] cfi_flash: move reset command assigment to specific chipset init function Jean-Christophe PLAGNIOL-VILLARD
2010-11-26 19:52 ` [PATCH 11/12] cfi_flash: introduce flash cmdset fixup Jean-Christophe PLAGNIOL-VILLARD
2010-11-26 19:52 ` [PATCH 12/12] cfi_flash_amd: Add manufacturer-specific fixups Jean-Christophe PLAGNIOL-VILLARD
2010-11-29 20:53 ` [PATCH 0/12] cfi_flash: improvment Sascha Hauer
2010-11-30 13:44   ` Jean-Christophe PLAGNIOL-VILLARD
2010-12-02 17:52   ` Jean-Christophe PLAGNIOL-VILLARD

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=1290801161-2417-2-git-send-email-plagnioj@jcrosoft.com \
    --to=plagnioj@jcrosoft.com \
    --cc=barebox@lists.infradead.org \
    --cc=nicolas.ferre@atmel.com \
    --cc=patrice.vilchez@atmel.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox