Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 225 insertions, 0 deletions

diff --git a/arch/arm/kernel/compat.c b/arch/arm/kernel/compat.c
new file mode 100644
index 000000000000..7195add42e74
--- /dev/null
+++ b/arch/arm/kernel/compat.c
@@ -0,0 +1,225 @@
+/*
+ *  linux/arch/arm/kernel/compat.c
+ *
+ *  Copyright (C) 2001 Russell King
+ *
+ * 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.
+ *
+ * We keep the old params compatibility cruft in one place (here)
+ * so we don't end up with lots of mess around other places.
+ *
+ * NOTE:
+ *  The old struct param_struct is deprecated, but it will be kept in
+ *  the kernel for 5 years from now (2001). This will allow boot loaders
+ *  to convert to the new struct tag way.
+ */
+#include <linux/config.h>
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/string.h>
+#include <linux/init.h>
+
+#include <asm/setup.h>
+#include <asm/mach-types.h>
+#include <asm/page.h>
+
+#include <asm/mach/arch.h>
+
+/*
+ * Usage:
+ *  - do not go blindly adding fields, add them at the end
+ *  - when adding fields, don't rely on the address until
+ *    a patch from me has been released
+ *  - unused fields should be zero (for future expansion)
+ *  - this structure is relatively short-lived - only
+ *    guaranteed to contain useful data in setup_arch()
+ *
+ * This is the old deprecated way to pass parameters to the kernel
+ */
+struct param_struct {
+    union {
+        struct {
+            unsigned long page_size;            /*  0 */
+            unsigned long nr_pages;             /*  4 */
+            unsigned long ramdisk_size;         /*  8 */
+            unsigned long flags;                /* 12 */
+#define FLAG_READONLY   1
+#define FLAG_RDLOAD     4
+#define FLAG_RDPROMPT   8
+            unsigned long rootdev;              /* 16 */
+            unsigned long video_num_cols;       /* 20 */
+            unsigned long video_num_rows;       /* 24 */
+            unsigned long video_x;              /* 28 */
+            unsigned long video_y;              /* 32 */
+            unsigned long memc_control_reg;     /* 36 */
+            unsigned char sounddefault;         /* 40 */
+            unsigned char adfsdrives;           /* 41 */
+            unsigned char bytes_per_char_h;     /* 42 */
+            unsigned char bytes_per_char_v;     /* 43 */
+            unsigned long pages_in_bank[4];     /* 44 */
+            unsigned long pages_in_vram;        /* 60 */
+            unsigned long initrd_start;         /* 64 */
+            unsigned long initrd_size;          /* 68 */
+            unsigned long rd_start;             /* 72 */
+            unsigned long system_rev;           /* 76 */
+            unsigned long system_serial_low;    /* 80 */
+            unsigned long system_serial_high;   /* 84 */
+            unsigned long mem_fclk_21285;       /* 88 */
+        } s;
+        char unused[256];
+    } u1;
+    union {
+        char paths[8][128];
+        struct {
+            unsigned long magic;
+            char n[1024 - sizeof(unsigned long)];
+        } s;
+    } u2;
+    char commandline[COMMAND_LINE_SIZE];
+};
+
+static struct tag * __init memtag(struct tag *tag, unsigned long start, unsigned long size)
+{
+        tag = tag_next(tag);
+        tag->hdr.tag = ATAG_MEM;
+        tag->hdr.size = tag_size(tag_mem32);
+        tag->u.mem.size = size;
+        tag->u.mem.start = start;
+
+        return tag;
+}
+
+static void __init build_tag_list(struct param_struct *params, void *taglist)
+{
+        struct tag *tag = taglist;
+
+        if (params->u1.s.page_size != PAGE_SIZE) {
+                printk(KERN_WARNING "Warning: bad configuration page, "
+                       "trying to continue\n");
+                return;
+        }
+
+        printk(KERN_DEBUG "Converting old-style param struct to taglist\n");
+
+#ifdef CONFIG_ARCH_NETWINDER
+        if (params->u1.s.nr_pages != 0x02000 &&
+            params->u1.s.nr_pages != 0x04000 &&
+            params->u1.s.nr_pages != 0x08000 &&
+            params->u1.s.nr_pages != 0x10000) {
+                printk(KERN_WARNING "Warning: bad NeTTrom parameters "
+                       "detected, using defaults\n");
+
+                params->u1.s.nr_pages = 0x1000; /* 16MB */
+                params->u1.s.ramdisk_size = 0;
+                params->u1.s.flags = FLAG_READONLY;
+                params->u1.s.initrd_start = 0;
+                params->u1.s.initrd_size = 0;
+                params->u1.s.rd_start = 0;
+        }
+#endif
+
+        tag->hdr.tag  = ATAG_CORE;
+        tag->hdr.size = tag_size(tag_core);
+        tag->u.core.flags = params->u1.s.flags & FLAG_READONLY;
+        tag->u.core.pagesize = params->u1.s.page_size;
+        tag->u.core.rootdev = params->u1.s.rootdev;
+
+        tag = tag_next(tag);
+        tag->hdr.tag = ATAG_RAMDISK;
+        tag->hdr.size = tag_size(tag_ramdisk);
+        tag->u.ramdisk.flags = (params->u1.s.flags & FLAG_RDLOAD ? 1 : 0) |
+                               (params->u1.s.flags & FLAG_RDPROMPT ? 2 : 0);
+        tag->u.ramdisk.size  = params->u1.s.ramdisk_size;
+        tag->u.ramdisk.start = params->u1.s.rd_start;
+
+        tag = tag_next(tag);
+        tag->hdr.tag = ATAG_INITRD;
+        tag->hdr.size = tag_size(tag_initrd);
+        tag->u.initrd.start = params->u1.s.initrd_start;
+        tag->u.initrd.size  = params->u1.s.initrd_size;
+
+        tag = tag_next(tag);
+        tag->hdr.tag = ATAG_SERIAL;
+        tag->hdr.size = tag_size(tag_serialnr);
+        tag->u.serialnr.low = params->u1.s.system_serial_low;
+        tag->u.serialnr.high = params->u1.s.system_serial_high;
+
+        tag = tag_next(tag);
+        tag->hdr.tag = ATAG_REVISION;
+        tag->hdr.size = tag_size(tag_revision);
+        tag->u.revision.rev = params->u1.s.system_rev;
+
+#ifdef CONFIG_ARCH_ACORN
+        if (machine_is_riscpc()) {
+                int i;
+                for (i = 0; i < 4; i++)
+                        tag = memtag(tag, PHYS_OFFSET + (i << 26),
+                                 params->u1.s.pages_in_bank[i] * PAGE_SIZE);
+        } else
+#endif
+        tag = memtag(tag, PHYS_OFFSET, params->u1.s.nr_pages * PAGE_SIZE);
+
+#ifdef CONFIG_FOOTBRIDGE
+        if (params->u1.s.mem_fclk_21285) {
+                tag = tag_next(tag);
+                tag->hdr.tag = ATAG_MEMCLK;
+                tag->hdr.size = tag_size(tag_memclk);
+                tag->u.memclk.fmemclk = params->u1.s.mem_fclk_21285;
+        }
+#endif
+
+#ifdef CONFIG_ARCH_EBSA285
+        if (machine_is_ebsa285()) {
+                tag = tag_next(tag);
+                tag->hdr.tag = ATAG_VIDEOTEXT;
+                tag->hdr.size = tag_size(tag_videotext);
+                tag->u.videotext.x            = params->u1.s.video_x;
+                tag->u.videotext.y            = params->u1.s.video_y;
+                tag->u.videotext.video_page   = 0;
+                tag->u.videotext.video_mode   = 0;
+                tag->u.videotext.video_cols   = params->u1.s.video_num_cols;
+                tag->u.videotext.video_ega_bx = 0;
+                tag->u.videotext.video_lines  = params->u1.s.video_num_rows;
+                tag->u.videotext.video_isvga  = 1;
+                tag->u.videotext.video_points = 8;
+        }
+#endif
+
+#ifdef CONFIG_ARCH_ACORN
+        tag = tag_next(tag);
+        tag->hdr.tag = ATAG_ACORN;
+        tag->hdr.size = tag_size(tag_acorn);
+        tag->u.acorn.memc_control_reg = params->u1.s.memc_control_reg;
+        tag->u.acorn.vram_pages       = params->u1.s.pages_in_vram;
+        tag->u.acorn.sounddefault     = params->u1.s.sounddefault;
+        tag->u.acorn.adfsdrives       = params->u1.s.adfsdrives;
+#endif
+
+        tag = tag_next(tag);
+        tag->hdr.tag = ATAG_CMDLINE;
+        tag->hdr.size = (strlen(params->commandline) + 3 +
+                         sizeof(struct tag_header)) >> 2;
+        strcpy(tag->u.cmdline.cmdline, params->commandline);
+
+        tag = tag_next(tag);
+        tag->hdr.tag = ATAG_NONE;
+        tag->hdr.size = 0;
+
+        memmove(params, taglist, ((int)tag) - ((int)taglist) +
+                                 sizeof(struct tag_header));
+}
+
+void __init convert_to_tag_list(struct tag *tags)
+{
+        struct param_struct *params = (struct param_struct *)tags;
+        build_tag_list(params, &params->u2);
+}
+
+void __init squash_mem_tags(struct tag *tag)
+{
+        for (; tag->hdr.size; tag = tag_next(tag))
+                if (tag->hdr.tag == ATAG_MEM)
+                        tag->hdr.tag = ATAG_NONE;
+}