mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-21 14:37:57 +00:00
f35dbef6d2
Refresh kernel patches. Built under MacOS Run tested: x86_64 (apu2) Signed-off-by: Kevin Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk>
218 lines
6.8 KiB
Diff
218 lines
6.8 KiB
Diff
From 803eb124e1a64e42888542c3444bfe6dac412c7f Mon Sep 17 00:00:00 2001
|
|
From: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
|
|
Date: Mon, 4 Jan 2021 09:41:35 +0530
|
|
Subject: mtd: parsers: Add Qcom SMEM parser
|
|
|
|
NAND based Qualcomm platforms have the partition table populated in the
|
|
Shared Memory (SMEM). Hence, add a parser for parsing the partitions
|
|
from it.
|
|
|
|
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
|
|
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
|
|
Link: https://lore.kernel.org/linux-mtd/20210104041137.113075-3-manivannan.sadhasivam@linaro.org
|
|
---
|
|
drivers/mtd/parsers/Kconfig | 8 ++
|
|
drivers/mtd/parsers/Makefile | 1 +
|
|
drivers/mtd/parsers/qcomsmempart.c | 170 +++++++++++++++++++++++++++++++++++++
|
|
3 files changed, 179 insertions(+)
|
|
create mode 100644 drivers/mtd/parsers/qcomsmempart.c
|
|
|
|
--- a/drivers/mtd/parsers/Kconfig
|
|
+++ b/drivers/mtd/parsers/Kconfig
|
|
@@ -196,6 +196,14 @@ config MTD_REDBOOT_PARTS_READONLY
|
|
|
|
endif # MTD_REDBOOT_PARTS
|
|
|
|
+config MTD_QCOMSMEM_PARTS
|
|
+ tristate "Qualcomm SMEM NAND flash partition parser"
|
|
+ depends on MTD_NAND_QCOM || COMPILE_TEST
|
|
+ depends on QCOM_SMEM
|
|
+ help
|
|
+ This provides support for parsing partitions from Shared Memory (SMEM)
|
|
+ for NAND flash on Qualcomm platforms.
|
|
+
|
|
config MTD_ROUTERBOOT_PARTS
|
|
tristate "RouterBoot flash partition parser"
|
|
depends on MTD && OF
|
|
--- a/drivers/mtd/parsers/Makefile
|
|
+++ b/drivers/mtd/parsers/Makefile
|
|
@@ -13,4 +13,5 @@ obj-$(CONFIG_MTD_AFS_PARTS) += afs.o
|
|
obj-$(CONFIG_MTD_PARSER_TRX) += parser_trx.o
|
|
obj-$(CONFIG_MTD_SHARPSL_PARTS) += sharpslpart.o
|
|
obj-$(CONFIG_MTD_REDBOOT_PARTS) += redboot.o
|
|
+obj-$(CONFIG_MTD_QCOMSMEM_PARTS) += qcomsmempart.o
|
|
obj-$(CONFIG_MTD_ROUTERBOOT_PARTS) += routerbootpart.o
|
|
--- /dev/null
|
|
+++ b/drivers/mtd/parsers/qcomsmempart.c
|
|
@@ -0,0 +1,170 @@
|
|
+// SPDX-License-Identifier: GPL-2.0-only
|
|
+/*
|
|
+ * Qualcomm SMEM NAND flash partition parser
|
|
+ *
|
|
+ * Copyright (C) 2020, Linaro Ltd.
|
|
+ */
|
|
+
|
|
+#include <linux/ctype.h>
|
|
+#include <linux/module.h>
|
|
+#include <linux/mtd/mtd.h>
|
|
+#include <linux/mtd/partitions.h>
|
|
+#include <linux/slab.h>
|
|
+#include <linux/soc/qcom/smem.h>
|
|
+
|
|
+#define SMEM_AARM_PARTITION_TABLE 9
|
|
+#define SMEM_APPS 0
|
|
+
|
|
+#define SMEM_FLASH_PART_MAGIC1 0x55ee73aa
|
|
+#define SMEM_FLASH_PART_MAGIC2 0xe35ebddb
|
|
+#define SMEM_FLASH_PTABLE_V3 3
|
|
+#define SMEM_FLASH_PTABLE_V4 4
|
|
+#define SMEM_FLASH_PTABLE_MAX_PARTS_V3 16
|
|
+#define SMEM_FLASH_PTABLE_MAX_PARTS_V4 48
|
|
+#define SMEM_FLASH_PTABLE_HDR_LEN (4 * sizeof(u32))
|
|
+#define SMEM_FLASH_PTABLE_NAME_SIZE 16
|
|
+
|
|
+/**
|
|
+ * struct smem_flash_pentry - SMEM Flash partition entry
|
|
+ * @name: Name of the partition
|
|
+ * @offset: Offset in blocks
|
|
+ * @length: Length of the partition in blocks
|
|
+ * @attr: Flags for this partition
|
|
+ */
|
|
+struct smem_flash_pentry {
|
|
+ char name[SMEM_FLASH_PTABLE_NAME_SIZE];
|
|
+ __le32 offset;
|
|
+ __le32 length;
|
|
+ u8 attr;
|
|
+} __packed __aligned(4);
|
|
+
|
|
+/**
|
|
+ * struct smem_flash_ptable - SMEM Flash partition table
|
|
+ * @magic1: Partition table Magic 1
|
|
+ * @magic2: Partition table Magic 2
|
|
+ * @version: Partition table version
|
|
+ * @numparts: Number of partitions in this ptable
|
|
+ * @pentry: Flash partition entries belonging to this ptable
|
|
+ */
|
|
+struct smem_flash_ptable {
|
|
+ __le32 magic1;
|
|
+ __le32 magic2;
|
|
+ __le32 version;
|
|
+ __le32 numparts;
|
|
+ struct smem_flash_pentry pentry[SMEM_FLASH_PTABLE_MAX_PARTS_V4];
|
|
+} __packed __aligned(4);
|
|
+
|
|
+static int parse_qcomsmem_part(struct mtd_info *mtd,
|
|
+ const struct mtd_partition **pparts,
|
|
+ struct mtd_part_parser_data *data)
|
|
+{
|
|
+ struct smem_flash_pentry *pentry;
|
|
+ struct smem_flash_ptable *ptable;
|
|
+ size_t len = SMEM_FLASH_PTABLE_HDR_LEN;
|
|
+ struct mtd_partition *parts;
|
|
+ int ret, i, numparts;
|
|
+ char *name, *c;
|
|
+
|
|
+ pr_debug("Parsing partition table info from SMEM\n");
|
|
+ ptable = qcom_smem_get(SMEM_APPS, SMEM_AARM_PARTITION_TABLE, &len);
|
|
+ if (IS_ERR(ptable)) {
|
|
+ pr_err("Error reading partition table header\n");
|
|
+ return PTR_ERR(ptable);
|
|
+ }
|
|
+
|
|
+ /* Verify ptable magic */
|
|
+ if (le32_to_cpu(ptable->magic1) != SMEM_FLASH_PART_MAGIC1 ||
|
|
+ le32_to_cpu(ptable->magic2) != SMEM_FLASH_PART_MAGIC2) {
|
|
+ pr_err("Partition table magic verification failed\n");
|
|
+ return -EINVAL;
|
|
+ }
|
|
+
|
|
+ /* Ensure that # of partitions is less than the max we have allocated */
|
|
+ numparts = le32_to_cpu(ptable->numparts);
|
|
+ if (numparts > SMEM_FLASH_PTABLE_MAX_PARTS_V4) {
|
|
+ pr_err("Partition numbers exceed the max limit\n");
|
|
+ return -EINVAL;
|
|
+ }
|
|
+
|
|
+ /* Find out length of partition data based on table version */
|
|
+ if (le32_to_cpu(ptable->version) <= SMEM_FLASH_PTABLE_V3) {
|
|
+ len = SMEM_FLASH_PTABLE_HDR_LEN + SMEM_FLASH_PTABLE_MAX_PARTS_V3 *
|
|
+ sizeof(struct smem_flash_pentry);
|
|
+ } else if (le32_to_cpu(ptable->version) == SMEM_FLASH_PTABLE_V4) {
|
|
+ len = SMEM_FLASH_PTABLE_HDR_LEN + SMEM_FLASH_PTABLE_MAX_PARTS_V4 *
|
|
+ sizeof(struct smem_flash_pentry);
|
|
+ } else {
|
|
+ pr_err("Unknown ptable version (%d)", le32_to_cpu(ptable->version));
|
|
+ return -EINVAL;
|
|
+ }
|
|
+
|
|
+ /*
|
|
+ * Now that the partition table header has been parsed, verified
|
|
+ * and the length of the partition table calculated, read the
|
|
+ * complete partition table
|
|
+ */
|
|
+ ptable = qcom_smem_get(SMEM_APPS, SMEM_AARM_PARTITION_TABLE, &len);
|
|
+ if (IS_ERR_OR_NULL(ptable)) {
|
|
+ pr_err("Error reading partition table\n");
|
|
+ return PTR_ERR(ptable);
|
|
+ }
|
|
+
|
|
+ parts = kcalloc(numparts, sizeof(*parts), GFP_KERNEL);
|
|
+ if (!parts)
|
|
+ return -ENOMEM;
|
|
+
|
|
+ for (i = 0; i < numparts; i++) {
|
|
+ pentry = &ptable->pentry[i];
|
|
+ if (pentry->name[0] == '\0')
|
|
+ continue;
|
|
+
|
|
+ name = kstrdup(pentry->name, GFP_KERNEL);
|
|
+ if (!name) {
|
|
+ ret = -ENOMEM;
|
|
+ goto out_free_parts;
|
|
+ }
|
|
+
|
|
+ /* Convert name to lower case */
|
|
+ for (c = name; *c != '\0'; c++)
|
|
+ *c = tolower(*c);
|
|
+
|
|
+ parts[i].name = name;
|
|
+ parts[i].offset = le32_to_cpu(pentry->offset) * mtd->erasesize;
|
|
+ parts[i].mask_flags = pentry->attr;
|
|
+ parts[i].size = le32_to_cpu(pentry->length) * mtd->erasesize;
|
|
+ pr_debug("%d: %s offs=0x%08x size=0x%08x attr:0x%08x\n",
|
|
+ i, pentry->name, le32_to_cpu(pentry->offset),
|
|
+ le32_to_cpu(pentry->length), pentry->attr);
|
|
+ }
|
|
+
|
|
+ pr_debug("SMEM partition table found: ver: %d len: %d\n",
|
|
+ le32_to_cpu(ptable->version), numparts);
|
|
+ *pparts = parts;
|
|
+
|
|
+ return numparts;
|
|
+
|
|
+out_free_parts:
|
|
+ while (--i >= 0)
|
|
+ kfree(parts[i].name);
|
|
+ kfree(parts);
|
|
+ *pparts = NULL;
|
|
+
|
|
+ return ret;
|
|
+}
|
|
+
|
|
+static const struct of_device_id qcomsmem_of_match_table[] = {
|
|
+ { .compatible = "qcom,smem-part" },
|
|
+ {},
|
|
+};
|
|
+MODULE_DEVICE_TABLE(of, qcomsmem_of_match_table);
|
|
+
|
|
+static struct mtd_part_parser mtd_parser_qcomsmem = {
|
|
+ .parse_fn = parse_qcomsmem_part,
|
|
+ .name = "qcomsmem",
|
|
+ .of_match_table = qcomsmem_of_match_table,
|
|
+};
|
|
+module_mtd_part_parser(mtd_parser_qcomsmem);
|
|
+
|
|
+MODULE_LICENSE("GPL v2");
|
|
+MODULE_AUTHOR("Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>");
|
|
+MODULE_DESCRIPTION("Qualcomm SMEM NAND flash partition parser");
|