[U-Boot] [PATCH 4/4] nds32: Enable the function of passing parameters to Linux
Kuan-Yu Kuo
ken.kuoky at gmail.com
Sat Jun 8 05:14:12 CEST 2013
Add a header file, setup.h, which copy from Linux source code,
this file contain structures are used to pass initialisation parameters
to Linux. Enable this function on adp-ag101/adp-ag101p target
Signed-off-by: Kuan-Yu Kuo <ken.kuoky at gmail.com>
Cc: Macpaul Lin <macpaul at gmail.com>
---
arch/nds32/include/asm/setup.h | 192 ++++++++++++++++++++++++++++++++++++++++
include/common.h | 1 +
include/configs/adp-ag101.h | 7 ++
include/configs/adp-ag101p.h | 7 ++
4 files changed, 207 insertions(+)
create mode 100644 arch/nds32/include/asm/setup.h
diff --git a/arch/nds32/include/asm/setup.h b/arch/nds32/include/asm/setup.h
new file mode 100644
index 0000000..0a14ea0
--- /dev/null
+++ b/arch/nds32/include/asm/setup.h
@@ -0,0 +1,192 @@
+/*
+ * linux/arch/nds32/include/asm/setup.h
+ *
+ * Copyright (C) 1997-1999 Russell King
+ * Copyright (C) 2008 Andes Technology Corporation
+ * Copyright (C) 2013 Ken Kuo (ken_kuo at andestech.com)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * Structure passed to kernel to tell it about the
+ * hardware it's running on. See Documentation/arm/Setup
+ * for more info.
+ */
+#ifndef __ASMNDS32_SETUP_H
+#define __ASMNDS32_SETUP_H
+
+#define COMMAND_LINE_SIZE 256
+
+/* The list ends with an ATAG_NONE node. */
+#define ATAG_NONE 0x00000000
+
+struct tag_header {
+ u32 size;
+ u32 tag;
+};
+
+/* The list must start with an ATAG_CORE node */
+#define ATAG_CORE 0x54410001
+
+struct tag_core {
+ u32 flags; /* bit 0 = read-only */
+ u32 pagesize;
+ u32 rootdev;
+};
+
+/* it is allowed to have multiple ATAG_MEM nodes */
+#define ATAG_MEM 0x54410002
+
+struct tag_mem32 {
+ u32 size;
+ u32 start; /* physical start address */
+};
+
+/* VGA text type displays */
+#define ATAG_VIDEOTEXT 0x54410003
+
+struct tag_videotext {
+ u8 x;
+ u8 y;
+ u16 video_page;
+ u8 video_mode;
+ u8 video_cols;
+ u16 video_ega_bx;
+ u8 video_lines;
+ u8 video_isvga;
+ u16 video_points;
+};
+
+/* describes how the ramdisk will be used in kernel */
+#define ATAG_RAMDISK 0x54410004
+
+struct tag_ramdisk {
+ u32 flags; /* bit 0 = load, bit 1 = prompt */
+ u32 size; /* decompressed ramdisk size in _kilo_ bytes */
+ u32 start; /* starting block of floppy-based RAM disk image */
+};
+
+/*
+ * this one accidentally used virtual addresses - as such,
+ * it's deprecated.
+ * describes where the compressed ramdisk image lives (virtual address)
+ */
+#define ATAG_INITRD 0x54410005
+
+/* describes where the compressed ramdisk image lives (physical address) */
+#define ATAG_INITRD2 0x54420005
+
+struct tag_initrd {
+ u32 start; /* physical start address */
+ u32 size; /* size of compressed ramdisk image in bytes */
+};
+
+/* board serial number. "64 bits should be enough for everybody" */
+#define ATAG_SERIAL 0x54410006
+
+struct tag_serialnr {
+ u32 low;
+ u32 high;
+};
+
+/* board revision */
+#define ATAG_REVISION 0x54410007
+
+struct tag_revision {
+ u32 rev;
+};
+
+/* initial values for vesafb-type framebuffers. see struct screen_info
+ * in include/linux/tty.h
+ */
+#define ATAG_VIDEOLFB 0x54410008
+
+struct tag_videolfb {
+ u16 lfb_width;
+ u16 lfb_height;
+ u16 lfb_depth;
+ u16 lfb_linelength;
+ u32 lfb_base;
+ u32 lfb_size;
+ u8 red_size;
+ u8 red_pos;
+ u8 green_size;
+ u8 green_pos;
+ u8 blue_size;
+ u8 blue_pos;
+ u8 rsvd_size;
+ u8 rsvd_pos;
+};
+
+/* command line: \0 terminated string */
+#define ATAG_CMDLINE 0x54410009
+
+struct tag_cmdline {
+ char cmdline[COMMAND_LINE_SIZE];
+};
+
+struct tag {
+ struct tag_header hdr;
+ union {
+ struct tag_core core;
+ struct tag_mem32 mem;
+ struct tag_videotext videotext;
+ struct tag_ramdisk ramdisk;
+ struct tag_initrd initrd;
+ struct tag_serialnr serialnr;
+ struct tag_revision revision;
+ struct tag_videolfb videolfb;
+ struct tag_cmdline cmdline;
+ } u;
+};
+
+struct tagtable {
+ u32 tag;
+ int (*parse)(const struct tag *);
+};
+
+#define tag_member_present(tag, member) \
+ ((unsigned long)(&((struct tag *)0L)->member + 1) \
+ <= (tag)->hdr.size * 4)
+
+#define tag_next(t) ((struct tag *)((u32 *)(t) + (t)->hdr.size))
+#define tag_size(type) ((sizeof(struct tag_header) + sizeof(struct type)) >> 2)
+
+#define for_each_tag(t, base) \
+ for (t = base; t->hdr.size; t = tag_next(t))
+
+#ifdef __KERNEL__
+
+#define __tag __used __attribute__((__section__(".taglist")))
+#define __tagtable(tag, fn) \
+static struct tagtable __tagtable_##fn __tag = { tag, fn }
+
+/*
+ * Memory map description
+ */
+#define NR_BANKS 8
+
+struct meminfo {
+ int nr_banks;
+ struct {
+ unsigned long start;
+ unsigned long size;
+ int node;
+ } bank[NR_BANKS];
+};
+
+/*
+ * Early command line parameters.
+ */
+struct early_params {
+ const char *arg;
+ void (*fn)(char **p);
+};
+
+#define __early_param(name, fn) \
+static struct early_params __early_##fn __used \
+__attribute__((__section__("__early_param"))) = { name, fn }
+
+#endif
+#endif
diff --git a/include/common.h b/include/common.h
index 126891d..e130785 100644
--- a/include/common.h
+++ b/include/common.h
@@ -421,6 +421,7 @@ static inline int setenv_addr(const char *varname, const void *addr)
#endif
#ifdef CONFIG_NDS32
# include <asm/mach-types.h>
+# include <asm/setup.h>
# include <asm/u-boot-nds32.h>
#endif /* CONFIG_NDS32 */
#ifdef CONFIG_MIPS
diff --git a/include/configs/adp-ag101.h b/include/configs/adp-ag101.h
index 85dbad2..1c380ea 100644
--- a/include/configs/adp-ag101.h
+++ b/include/configs/adp-ag101.h
@@ -35,6 +35,13 @@
#define CONFIG_SKIP_LOWLEVEL_INIT
+/*
+ * Definitions related to passing arguments to kernel.
+ */
+#define CONFIG_CMDLINE_TAG /* send commandline to Kernel */
+#define CONFIG_SETUP_MEMORY_TAGS /* send memory definition to kernel */
+#define CONFIG_INITRD_TAG /* send initrd params */
+
#ifndef CONFIG_SKIP_LOWLEVEL_INIT
#define CONFIG_MEM_REMAP
#endif
diff --git a/include/configs/adp-ag101p.h b/include/configs/adp-ag101p.h
index 6085208..8748134 100644
--- a/include/configs/adp-ag101p.h
+++ b/include/configs/adp-ag101p.h
@@ -35,6 +35,13 @@
#define CONFIG_SKIP_LOWLEVEL_INIT
+/*
+ * Definitions related to passing arguments to kernel.
+ */
+#define CONFIG_CMDLINE_TAG /* send commandline to Kernel */
+#define CONFIG_SETUP_MEMORY_TAGS /* send memory definition to kernel */
+#define CONFIG_INITRD_TAG /* send initrd params */
+
#ifndef CONFIG_SKIP_LOWLEVEL_INIT
#define CONFIG_MEM_REMAP
#endif
--
1.7.9.5
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