115 lines
3.5 KiB
Diff
115 lines
3.5 KiB
Diff
From 5a37811de679bff03e9c5a746f75574910ede964 Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?=C3=81lvaro=20Fern=C3=A1ndez=20Rojas?= <noltari@gmail.com>
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Date: Wed, 22 Mar 2023 20:52:13 +0100
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Subject: [PATCH] Revert "mtd: rawnand: Macronix: Add support for block
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protection"
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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This reverts commit 03a539c7a118427a6609a26461358c56ac8f3a06.
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Macronix block protection doesn't seem to be supported on Sercomm H-500s
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devices since it hangs the device.
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Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
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---
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drivers/mtd/nand/raw/nand_macronix.c | 72 ----------------------------
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1 file changed, 72 deletions(-)
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--- a/drivers/mtd/nand/raw/nand_macronix.c
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+++ b/drivers/mtd/nand/raw/nand_macronix.c
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@@ -13,10 +13,6 @@
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#define MACRONIX_READ_RETRY_BIT BIT(0)
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#define MACRONIX_NUM_READ_RETRY_MODES 6
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-#define ONFI_FEATURE_ADDR_MXIC_PROTECTION 0xA0
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-#define MXIC_BLOCK_PROTECTION_ALL_LOCK 0x38
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-#define MXIC_BLOCK_PROTECTION_ALL_UNLOCK 0x0
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-
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#define ONFI_FEATURE_ADDR_MXIC_RANDOMIZER 0xB0
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#define MACRONIX_RANDOMIZER_BIT BIT(1)
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#define MACRONIX_RANDOMIZER_ENPGM BIT(0)
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@@ -189,73 +185,6 @@ static void macronix_nand_fix_broken_get
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ONFI_FEATURE_ADDR_TIMING_MODE, 1);
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}
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-/*
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- * Macronix NAND supports Block Protection by Protectoin(PT) pin;
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- * active high at power-on which protects the entire chip even the #WP is
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- * disabled. Lock/unlock protection area can be partition according to
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- * protection bits, i.e. upper 1/2 locked, upper 1/4 locked and so on.
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- */
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-static int mxic_nand_lock(struct nand_chip *chip, loff_t ofs, uint64_t len)
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-{
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- u8 feature[ONFI_SUBFEATURE_PARAM_LEN];
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- int ret;
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-
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- feature[0] = MXIC_BLOCK_PROTECTION_ALL_LOCK;
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- nand_select_target(chip, 0);
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- ret = nand_set_features(chip, ONFI_FEATURE_ADDR_MXIC_PROTECTION,
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- feature);
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- nand_deselect_target(chip);
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- if (ret)
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- pr_err("%s all blocks failed\n", __func__);
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-
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- return ret;
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-}
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-
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-static int mxic_nand_unlock(struct nand_chip *chip, loff_t ofs, uint64_t len)
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-{
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- u8 feature[ONFI_SUBFEATURE_PARAM_LEN];
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- int ret;
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-
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- feature[0] = MXIC_BLOCK_PROTECTION_ALL_UNLOCK;
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- nand_select_target(chip, 0);
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- ret = nand_set_features(chip, ONFI_FEATURE_ADDR_MXIC_PROTECTION,
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- feature);
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- nand_deselect_target(chip);
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- if (ret)
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- pr_err("%s all blocks failed\n", __func__);
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-
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- return ret;
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-}
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-
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-static void macronix_nand_block_protection_support(struct nand_chip *chip)
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-{
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- u8 feature[ONFI_SUBFEATURE_PARAM_LEN];
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- int ret;
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-
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- bitmap_set(chip->parameters.get_feature_list,
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- ONFI_FEATURE_ADDR_MXIC_PROTECTION, 1);
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-
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- feature[0] = MXIC_BLOCK_PROTECTION_ALL_UNLOCK;
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- nand_select_target(chip, 0);
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- ret = nand_get_features(chip, ONFI_FEATURE_ADDR_MXIC_PROTECTION,
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- feature);
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- nand_deselect_target(chip);
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- if (ret || feature[0] != MXIC_BLOCK_PROTECTION_ALL_LOCK) {
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- if (ret)
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- pr_err("Block protection check failed\n");
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-
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- bitmap_clear(chip->parameters.get_feature_list,
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- ONFI_FEATURE_ADDR_MXIC_PROTECTION, 1);
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- return;
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- }
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-
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- bitmap_set(chip->parameters.set_feature_list,
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- ONFI_FEATURE_ADDR_MXIC_PROTECTION, 1);
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-
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- chip->ops.lock_area = mxic_nand_lock;
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- chip->ops.unlock_area = mxic_nand_unlock;
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-}
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-
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static int nand_power_down_op(struct nand_chip *chip)
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{
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int ret;
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@@ -488,7 +417,6 @@ static int macronix_nand_init(struct nan
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macronix_nand_fix_broken_get_timings(chip);
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macronix_nand_onfi_init(chip);
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- macronix_nand_block_protection_support(chip);
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macronix_nand_deep_power_down_support(chip);
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macronix_nand_setup_otp(chip);
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