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, 113 insertions, 0 deletions

diff --git a/arch/arm26/kernel/head.S b/arch/arm26/kernel/head.S
new file mode 100644
index 000000000000..8bfc62539ba6
--- /dev/null
+++ b/arch/arm26/kernel/head.S
@@ -0,0 +1,113 @@
+/*
+ *  linux/arch/arm26/kernel/head.S
+ *
+ *  Copyright (C) 1994-2000 Russell King
+ *  Copyright (C) 2003 Ian Molton
+ *
+ * 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.
+ *
+ *  26-bit kernel startup code
+ */
+#include <linux/config.h>
+#include <linux/linkage.h>
+#include <asm/mach-types.h>
+
+                .globl  swapper_pg_dir
+                .equ    swapper_pg_dir, 0x0207d000
+
+/*
+ * Entry point.
+ */
+                .section ".init.text",#alloc,#execinstr
+ENTRY(stext)
+
+__entry:
+                cmp     pc, #0x02000000
+                ldrlt   pc, LC0                 @ if 0x01800000, call at 0x02080000
+                teq     r0, #0                  @ Check for old calling method
+                blne    oldparams               @ Move page if old
+
+                adr     r0, LC0
+                ldmib   r0, {r2-r5, sp}         @ Setup stack (and fetch other values)
+
+                mov     r0, #0                  @ Clear BSS
+1:              cmp     r2, r3
+                strcc   r0, [r2], #4
+                bcc     1b
+
+                bl      detect_proc_type
+                str     r0, [r4]
+                bl      detect_arch_type
+                str     r0, [r5]
+
+#ifdef CONFIG_XIP_KERNEL
+               ldr     r3, ETEXT                       @ data section copy
+               ldr     r4, SDATA
+               ldr     r5, EDATA
+1:
+               ldr     r6, [r3], #4
+               str     r6, [r4], #4
+               cmp     r4, r5
+               blt     1b
+#endif
+                mov     fp, #0
+                b       start_kernel
+
+LC0:            .word   _stext
+                .word   __bss_start             @ r2
+                .word   _end                    @ r3
+                .word   processor_id            @ r4
+                .word   __machine_arch_type     @ r5
+                .word   init_thread_union+8192  @ sp
+#ifdef CONFIG_XIP_KERNEL
+ETEXT:          .word   _endtext
+SDATA:          .word   _sdata
+EDATA:          .word   __bss_start
+#endif
+
+arm2_id:        .long   0x41560200  @ ARM2 and 250 dont have a CPUID
+arm250_id:      .long   0x41560250  @ So we create some after probing for them
+                .align
+
+oldparams:      mov     r4, #0x02000000
+                add     r3, r4, #0x00080000
+                add     r4, r4, #0x0007c000
+1:              ldmia   r0!, {r5 - r12}
+                stmia   r4!, {r5 - r12}
+                cmp     r4, r3
+                blt     1b
+                mov     pc, lr
+
+/*
+ * We need some way to automatically detect the difference between
+ * these two machines.  Unfortunately, it is not possible to detect
+ * the presence of the SuperIO chip, because that will hang the old
+ * Archimedes machines solid.
+ */
+/* DAG: Outdated, these have been combined !!!!!!! */
+detect_arch_type:
+#if defined(CONFIG_ARCH_ARC)
+                mov     r0, #MACH_TYPE_ARCHIMEDES
+#elif defined(CONFIG_ARCH_A5K)
+                mov     r0, #MACH_TYPE_A5K
+#endif
+                mov     pc, lr
+
+detect_proc_type:
+                mov     ip, lr
+                mov     r2, #0xea000000         @ Point undef instr to continuation
+                adr     r0, continue - 12
+                orr     r0, r2, r0, lsr #2
+                mov     r1, #0
+                str     r0, [r1, #4]
+                ldr     r0, arm2_id
+                swp     r2, r2, [r1]            @ check for swp (ARM2 cant)
+                ldr     r0, arm250_id
+                mrc     15, 0, r3, c0, c0       @ check for CP#15 (ARM250 cant)
+                mov     r0, r3
+continue:       mov     r2, #0xeb000000         @ Make undef vector loop
+                sub     r2, r2, #2
+                str     r2, [r1, #4]
+                mov     pc, ip