Import Turris OS kernel patches

1 files changed, 0 insertions, 217 deletions

diff --git a/nixos/modules/kernel-patches/0005-generic-Mangle-bootloader-s-kernel-arguments.patch b/nixos/modules/kernel-patches/0005-generic-Mangle-bootloader-s-kernel-arguments.patch
deleted file mode 100644
index 4eafb31..0000000
--- a/nixos/modules/kernel-patches/0005-generic-Mangle-bootloader-s-kernel-arguments.patch
+++ /dev/null
@@ -1,217 +0,0 @@
-From 7f478ddf690dfccd8aea406a9697e1448920bf0f Mon Sep 17 00:00:00 2001
-From: Adrian Panella <ianchi74@outlook.com>
-Date: Thu, 9 Mar 2017 09:37:17 +0100
-Subject: [PATCH 05/10] generic: Mangle bootloader's kernel arguments
-
-The command-line arguments provided by the boot loader will be
-appended to a new device tree property: bootloader-args.
-If there is a property "append-rootblock" in DT under /chosen
-and a root= option in bootloaders command line it will be parsed
-and added to DT bootargs with the form: <append-rootblock>XX.
-Only command line ATAG will be processed, the rest of the ATAGs
-sent by bootloader will be ignored.
-This is usefull in dual boot systems, to get the current root partition
-without afecting the rest of the system.
-
-Signed-off-by: Adrian Panella <ianchi74@outlook.com>
-
-This patch has been modified to be mvebu specific. The original patch
-did not pass the bootloader cmdline on if no append-rootblock stanza
-was found, resulting in blank cmdline and failure to boot.
-
-Signed-off-by: Michael Gray <michael.gray@lantisproject.com>
----
- arch/arm/Kconfig                        | 11 ++++
- arch/arm/boot/compressed/atags_to_fdt.c | 85 ++++++++++++++++++++++++-
- init/main.c                             | 16 +++++
- 3 files changed, 111 insertions(+), 1 deletion(-)
-
-diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
-index 7630ba9cb6cc..dae040cc2a4f 100644
---- a/arch/arm/Kconfig
-+++ b/arch/arm/Kconfig
-@@ -1638,6 +1638,17 @@ config ARM_ATAG_DTB_COMPAT_CMDLINE_EXTEND
- 	  The command-line arguments provided by the boot loader will be
- 	  appended to the the device tree bootargs property.
- 
-+config ARM_ATAG_DTB_COMPAT_CMDLINE_MANGLE
-+	bool "Append rootblock parsing bootloader's kernel arguments"
-+	help
-+	  The command-line arguments provided by the boot loader will be
-+	  appended to a new device tree property: bootloader-args.
-+	  If there is a property "append-rootblock" in DT under /chosen 
-+	  and a root= option in bootloaders command line it will be parsed 
-+	  and added to DT bootargs with the form: <append-rootblock>XX.
-+	  Only command line ATAG will be processed, the rest of the ATAGs
-+	  sent by bootloader will be ignored.
-+
- endchoice
- 
- config CMDLINE
-diff --git a/arch/arm/boot/compressed/atags_to_fdt.c b/arch/arm/boot/compressed/atags_to_fdt.c
-index 1feb6b0f7a1f..fb8cd4f07e60 100644
---- a/arch/arm/boot/compressed/atags_to_fdt.c
-+++ b/arch/arm/boot/compressed/atags_to_fdt.c
-@@ -5,6 +5,8 @@
- 
- #if defined(CONFIG_ARM_ATAG_DTB_COMPAT_CMDLINE_EXTEND)
- #define do_extend_cmdline 1
-+#elif defined(CONFIG_ARM_ATAG_DTB_COMPAT_CMDLINE_MANGLE)
-+#define do_extend_cmdline 1
- #else
- #define do_extend_cmdline 0
- #endif
-@@ -69,6 +71,72 @@ static uint32_t get_cell_size(const void *fdt)
- 	return cell_size;
- }
- 
-+#if defined(CONFIG_ARM_ATAG_DTB_COMPAT_CMDLINE_MANGLE)
-+
-+static char *append_rootblock(char *dest, const char *str, int len, void *fdt)
-+{
-+	char *ptr, *end;
-+	char *root="root=";
-+	int i, l;
-+	const char *rootblock;
-+
-+	//ARM doesn't have __HAVE_ARCH_STRSTR, so search manually
-+	ptr = str - 1;
-+
-+	do {
-+		//first find an 'r' at the begining or after a space
-+		do {
-+			ptr++;
-+			ptr = strchr(ptr, 'r');
-+			if (!ptr)
-+				goto no_append;
-+
-+		} while (ptr != str && *(ptr-1) != ' ');
-+
-+		//then check for the rest
-+		for(i = 1; i <= 4; i++)
-+			if(*(ptr+i) != *(root+i)) break;
-+
-+	} while (i != 5);
-+
-+	end = strchr(ptr, ' ');
-+	end = end ? (end - 1) : (strchr(ptr, 0) - 1);
-+
-+	//find partition number (assumes format root=/dev/mtdXX | /dev/mtdblockXX | yy:XX )
-+	for( i = 0; end >= ptr && *end >= '0' && *end <= '9'; end--, i++);
-+	ptr = end + 1;
-+
-+	/* if append-rootblock property is set use it to append to command line */
-+	rootblock = getprop(fdt, "/chosen", "append-rootblock", &l);
-+	if (rootblock == NULL)
-+		goto no_append;
-+
-+	if (*dest != ' ') {
-+		*dest = ' ';
-+		dest++;
-+		len++;
-+	}
-+
-+	if (len + l + i <= COMMAND_LINE_SIZE) {
-+		memcpy(dest, rootblock, l);
-+		dest += l - 1;
-+		memcpy(dest, ptr, i);
-+		dest += i;
-+	}
-+
-+	return dest;
-+
-+no_append:
-+	len = strlen(str);
-+	if (len + 1 < COMMAND_LINE_SIZE) {
-+		memcpy(dest, str, len);
-+		dest += len;
-+	}
-+
-+	return dest;
-+}
-+#endif
-+
- static void merge_fdt_bootargs(void *fdt, const char *fdt_cmdline)
- {
- 	char cmdline[COMMAND_LINE_SIZE];
-@@ -88,12 +156,21 @@ static void merge_fdt_bootargs(void *fdt, const char *fdt_cmdline)
- 
- 	/* and append the ATAG_CMDLINE */
- 	if (fdt_cmdline) {
-+
-+#if defined(CONFIG_ARM_ATAG_DTB_COMPAT_CMDLINE_MANGLE)
-+		//save original bootloader args
-+		//and append ubi.mtd with root partition number to current cmdline
-+		setprop_string(fdt, "/chosen", "bootloader-args", fdt_cmdline);
-+		ptr = append_rootblock(ptr, fdt_cmdline, len, fdt);
-+
-+#else
- 		len = strlen(fdt_cmdline);
- 		if (ptr - cmdline + len + 2 < COMMAND_LINE_SIZE) {
- 			*ptr++ = ' ';
- 			memcpy(ptr, fdt_cmdline, len);
- 			ptr += len;
- 		}
-+#endif
- 	}
- 	*ptr = '\0';
- 
-@@ -168,7 +245,9 @@ int atags_to_fdt(void *atag_list, void *fdt, int total_space)
- 			else
- 				setprop_string(fdt, "/chosen", "bootargs",
- 					       atag->u.cmdline.cmdline);
--		} else if (atag->hdr.tag == ATAG_MEM) {
-+		}
-+#ifndef CONFIG_ARM_ATAG_DTB_COMPAT_CMDLINE_MANGLE
-+		else if (atag->hdr.tag == ATAG_MEM) {
- 			if (memcount >= sizeof(mem_reg_property)/4)
- 				continue;
- 			if (!atag->u.mem.size)
-@@ -212,6 +291,10 @@ int atags_to_fdt(void *atag_list, void *fdt, int total_space)
- 		setprop(fdt, "/memory", "reg", mem_reg_property,
- 			4 * memcount * memsize);
- 	}
-+#else
-+
-+	}
-+#endif
- 
- 	return fdt_pack(fdt);
- }
-diff --git a/init/main.c b/init/main.c
-index 1fe7942f5d4a..fa08c129d3e1 100644
---- a/init/main.c
-+++ b/init/main.c
-@@ -113,6 +113,10 @@
- 
- #include <kunit/test.h>
- 
-+#if defined(CONFIG_ARM_ATAG_DTB_COMPAT_CMDLINE_MANGLE)
-+#include <linux/of.h>
-+#endif
-+
- static int kernel_init(void *);
- 
- extern void init_IRQ(void);
-@@ -961,6 +965,18 @@ asmlinkage __visible void __init __no_sanitize_address start_kernel(void)
- 	page_alloc_init();
- 
- 	pr_notice("Kernel command line: %s\n", saved_command_line);
-+
-+#if defined(CONFIG_ARM_ATAG_DTB_COMPAT_CMDLINE_MANGLE)
-+	//Show bootloader's original command line for reference
-+	if(of_chosen) {
-+		const char *prop = of_get_property(of_chosen, "bootloader-args", NULL);
-+		if(prop)
-+			pr_notice("Bootloader command line (ignored): %s\n", prop);
-+		else
-+			pr_notice("Bootloader command line not present\n");
-+	}
-+#endif
-+
- 	/* parameters may set static keys */
- 	jump_label_init();
- 	parse_early_param();
--- 
-2.37.2
-