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-rw-r--r--target/linux/ipq806x/patches/0050-drivers-of-add-initialization-code-for-dynamic-reser.patch316
1 files changed, 0 insertions, 316 deletions
diff --git a/target/linux/ipq806x/patches/0050-drivers-of-add-initialization-code-for-dynamic-reser.patch b/target/linux/ipq806x/patches/0050-drivers-of-add-initialization-code-for-dynamic-reser.patch
deleted file mode 100644
index 4b633b599f..0000000000
--- a/target/linux/ipq806x/patches/0050-drivers-of-add-initialization-code-for-dynamic-reser.patch
+++ /dev/null
@@ -1,316 +0,0 @@
-From 968b497e1027ec78e986370976c76e1652aa0459 Mon Sep 17 00:00:00 2001
-From: Marek Szyprowski <m.szyprowski@samsung.com>
-Date: Fri, 28 Feb 2014 14:42:48 +0100
-Subject: [PATCH 050/182] drivers: of: add initialization code for dynamic
- reserved memory
-
-This patch adds support for dynamically allocated reserved memory regions
-declared in device tree. Such regions are defined by 'size', 'alignment'
-and 'alloc-ranges' properties.
-
-Based on previous code provided by Josh Cartwright <joshc@codeaurora.org>
-
-Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
-Signed-off-by: Grant Likely <grant.likely@linaro.org>
----
- drivers/of/Kconfig | 6 ++
- drivers/of/Makefile | 1 +
- drivers/of/fdt.c | 13 ++-
- drivers/of/of_reserved_mem.c | 188 +++++++++++++++++++++++++++++++++++++++
- include/linux/of_reserved_mem.h | 21 +++++
- 5 files changed, 227 insertions(+), 2 deletions(-)
- create mode 100644 drivers/of/of_reserved_mem.c
- create mode 100644 include/linux/of_reserved_mem.h
-
---- a/drivers/of/Kconfig
-+++ b/drivers/of/Kconfig
-@@ -75,4 +75,10 @@ config OF_MTD
- depends on MTD
- def_bool y
-
-+config OF_RESERVED_MEM
-+ depends on OF_EARLY_FLATTREE
-+ bool
-+ help
-+ Helpers to allow for reservation of memory regions
-+
- endmenu # OF
---- a/drivers/of/Makefile
-+++ b/drivers/of/Makefile
-@@ -9,3 +9,4 @@ obj-$(CONFIG_OF_MDIO) += of_mdio.o
- obj-$(CONFIG_OF_PCI) += of_pci.o
- obj-$(CONFIG_OF_PCI_IRQ) += of_pci_irq.o
- obj-$(CONFIG_OF_MTD) += of_mtd.o
-+obj-$(CONFIG_OF_RESERVED_MEM) += of_reserved_mem.o
---- a/drivers/of/fdt.c
-+++ b/drivers/of/fdt.c
-@@ -15,6 +15,7 @@
- #include <linux/module.h>
- #include <linux/of.h>
- #include <linux/of_fdt.h>
-+#include <linux/of_reserved_mem.h>
- #include <linux/sizes.h>
- #include <linux/string.h>
- #include <linux/errno.h>
-@@ -450,7 +451,7 @@ static int __init __reserved_mem_reserve
- phys_addr_t base, size;
- unsigned long len;
- __be32 *prop;
-- int nomap;
-+ int nomap, first = 1;
-
- prop = of_get_flat_dt_prop(node, "reg", &len);
- if (!prop)
-@@ -477,6 +478,10 @@ static int __init __reserved_mem_reserve
- uname, &base, (unsigned long)size / SZ_1M);
-
- len -= t_len;
-+ if (first) {
-+ fdt_reserved_mem_save_node(node, uname, base, size);
-+ first = 0;
-+ }
- }
- return 0;
- }
-@@ -512,6 +517,7 @@ static int __init __fdt_scan_reserved_me
- {
- static int found;
- const char *status;
-+ int err;
-
- if (!found && depth == 1 && strcmp(uname, "reserved-memory") == 0) {
- if (__reserved_mem_check_root(node) != 0) {
-@@ -534,7 +540,9 @@ static int __init __fdt_scan_reserved_me
- if (status && strcmp(status, "okay") != 0 && strcmp(status, "ok") != 0)
- return 0;
-
-- __reserved_mem_reserve_reg(node, uname);
-+ err = __reserved_mem_reserve_reg(node, uname);
-+ if (err == -ENOENT && of_get_flat_dt_prop(node, "size", NULL))
-+ fdt_reserved_mem_save_node(node, uname, 0, 0);
-
- /* scan next node */
- return 0;
-@@ -550,6 +558,7 @@ static int __init __fdt_scan_reserved_me
- void __init early_init_fdt_scan_reserved_mem(void)
- {
- of_scan_flat_dt(__fdt_scan_reserved_mem, NULL);
-+ fdt_init_reserved_mem();
- }
-
- /**
---- /dev/null
-+++ b/drivers/of/of_reserved_mem.c
-@@ -0,0 +1,188 @@
-+/*
-+ * Device tree based initialization code for reserved memory.
-+ *
-+ * Copyright (c) 2013, The Linux Foundation. All Rights Reserved.
-+ * Copyright (c) 2013,2014 Samsung Electronics Co., Ltd.
-+ * http://www.samsung.com
-+ * Author: Marek Szyprowski <m.szyprowski@samsung.com>
-+ * Author: Josh Cartwright <joshc@codeaurora.org>
-+ *
-+ * 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; either version 2 of the
-+ * License or (at your optional) any later version of the license.
-+ */
-+
-+#include <linux/err.h>
-+#include <linux/of.h>
-+#include <linux/of_fdt.h>
-+#include <linux/of_platform.h>
-+#include <linux/mm.h>
-+#include <linux/sizes.h>
-+#include <linux/of_reserved_mem.h>
-+
-+#define MAX_RESERVED_REGIONS 16
-+static struct reserved_mem reserved_mem[MAX_RESERVED_REGIONS];
-+static int reserved_mem_count;
-+
-+#if defined(CONFIG_HAVE_MEMBLOCK)
-+#include <linux/memblock.h>
-+int __init __weak early_init_dt_alloc_reserved_memory_arch(phys_addr_t size,
-+ phys_addr_t align, phys_addr_t start, phys_addr_t end, bool nomap,
-+ phys_addr_t *res_base)
-+{
-+ /*
-+ * We use __memblock_alloc_base() because memblock_alloc_base()
-+ * panic()s on allocation failure.
-+ */
-+ phys_addr_t base = __memblock_alloc_base(size, align, end);
-+ if (!base)
-+ return -ENOMEM;
-+
-+ /*
-+ * Check if the allocated region fits in to start..end window
-+ */
-+ if (base < start) {
-+ memblock_free(base, size);
-+ return -ENOMEM;
-+ }
-+
-+ *res_base = base;
-+ if (nomap)
-+ return memblock_remove(base, size);
-+ return 0;
-+}
-+#else
-+int __init __weak early_init_dt_alloc_reserved_memory_arch(phys_addr_t size,
-+ phys_addr_t align, phys_addr_t start, phys_addr_t end, bool nomap,
-+ phys_addr_t *res_base)
-+{
-+ pr_err("Reserved memory not supported, ignoring region 0x%llx%s\n",
-+ size, nomap ? " (nomap)" : "");
-+ return -ENOSYS;
-+}
-+#endif
-+
-+/**
-+ * res_mem_save_node() - save fdt node for second pass initialization
-+ */
-+void __init fdt_reserved_mem_save_node(unsigned long node, const char *uname,
-+ phys_addr_t base, phys_addr_t size)
-+{
-+ struct reserved_mem *rmem = &reserved_mem[reserved_mem_count];
-+
-+ if (reserved_mem_count == ARRAY_SIZE(reserved_mem)) {
-+ pr_err("Reserved memory: not enough space all defined regions.\n");
-+ return;
-+ }
-+
-+ rmem->fdt_node = node;
-+ rmem->name = uname;
-+ rmem->base = base;
-+ rmem->size = size;
-+
-+ reserved_mem_count++;
-+ return;
-+}
-+
-+/**
-+ * res_mem_alloc_size() - allocate reserved memory described by 'size', 'align'
-+ * and 'alloc-ranges' properties
-+ */
-+static int __init __reserved_mem_alloc_size(unsigned long node,
-+ const char *uname, phys_addr_t *res_base, phys_addr_t *res_size)
-+{
-+ int t_len = (dt_root_addr_cells + dt_root_size_cells) * sizeof(__be32);
-+ phys_addr_t start = 0, end = 0;
-+ phys_addr_t base = 0, align = 0, size;
-+ unsigned long len;
-+ __be32 *prop;
-+ int nomap;
-+ int ret;
-+
-+ prop = of_get_flat_dt_prop(node, "size", &len);
-+ if (!prop)
-+ return -EINVAL;
-+
-+ if (len != dt_root_size_cells * sizeof(__be32)) {
-+ pr_err("Reserved memory: invalid size property in '%s' node.\n",
-+ uname);
-+ return -EINVAL;
-+ }
-+ size = dt_mem_next_cell(dt_root_size_cells, &prop);
-+
-+ nomap = of_get_flat_dt_prop(node, "no-map", NULL) != NULL;
-+
-+ prop = of_get_flat_dt_prop(node, "alignment", &len);
-+ if (prop) {
-+ if (len != dt_root_addr_cells * sizeof(__be32)) {
-+ pr_err("Reserved memory: invalid alignment property in '%s' node.\n",
-+ uname);
-+ return -EINVAL;
-+ }
-+ align = dt_mem_next_cell(dt_root_addr_cells, &prop);
-+ }
-+
-+ prop = of_get_flat_dt_prop(node, "alloc-ranges", &len);
-+ if (prop) {
-+
-+ if (len % t_len != 0) {
-+ pr_err("Reserved memory: invalid alloc-ranges property in '%s', skipping node.\n",
-+ uname);
-+ return -EINVAL;
-+ }
-+
-+ base = 0;
-+
-+ while (len > 0) {
-+ start = dt_mem_next_cell(dt_root_addr_cells, &prop);
-+ end = start + dt_mem_next_cell(dt_root_size_cells,
-+ &prop);
-+
-+ ret = early_init_dt_alloc_reserved_memory_arch(size,
-+ align, start, end, nomap, &base);
-+ if (ret == 0) {
-+ pr_debug("Reserved memory: allocated memory for '%s' node: base %pa, size %ld MiB\n",
-+ uname, &base,
-+ (unsigned long)size / SZ_1M);
-+ break;
-+ }
-+ len -= t_len;
-+ }
-+
-+ } else {
-+ ret = early_init_dt_alloc_reserved_memory_arch(size, align,
-+ 0, 0, nomap, &base);
-+ if (ret == 0)
-+ pr_debug("Reserved memory: allocated memory for '%s' node: base %pa, size %ld MiB\n",
-+ uname, &base, (unsigned long)size / SZ_1M);
-+ }
-+
-+ if (base == 0) {
-+ pr_info("Reserved memory: failed to allocate memory for node '%s'\n",
-+ uname);
-+ return -ENOMEM;
-+ }
-+
-+ *res_base = base;
-+ *res_size = size;
-+
-+ return 0;
-+}
-+
-+/**
-+ * fdt_init_reserved_mem - allocate and init all saved reserved memory regions
-+ */
-+void __init fdt_init_reserved_mem(void)
-+{
-+ int i;
-+ for (i = 0; i < reserved_mem_count; i++) {
-+ struct reserved_mem *rmem = &reserved_mem[i];
-+ unsigned long node = rmem->fdt_node;
-+ int err = 0;
-+
-+ if (rmem->size == 0)
-+ err = __reserved_mem_alloc_size(node, rmem->name,
-+ &rmem->base, &rmem->size);
-+ }
-+}
---- /dev/null
-+++ b/include/linux/of_reserved_mem.h
-@@ -0,0 +1,21 @@
-+#ifndef __OF_RESERVED_MEM_H
-+#define __OF_RESERVED_MEM_H
-+
-+struct reserved_mem {
-+ const char *name;
-+ unsigned long fdt_node;
-+ phys_addr_t base;
-+ phys_addr_t size;
-+};
-+
-+#ifdef CONFIG_OF_RESERVED_MEM
-+void fdt_init_reserved_mem(void);
-+void fdt_reserved_mem_save_node(unsigned long node, const char *uname,
-+ phys_addr_t base, phys_addr_t size);
-+#else
-+static inline void fdt_init_reserved_mem(void) { }
-+static inline void fdt_reserved_mem_save_node(unsigned long node,
-+ const char *uname, phys_addr_t base, phys_addr_t size) { }
-+#endif
-+
-+#endif /* __OF_RESERVED_MEM_H */
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