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, 99 insertions, 0 deletions

diff --git a/arch/alpha/kernel/head.S b/arch/alpha/kernel/head.S
new file mode 100644
index 000000000000..4ca2e404708a
--- /dev/null
+++ b/arch/alpha/kernel/head.S
@@ -0,0 +1,99 @@
+/*
+ * alpha/boot/head.S
+ *
+ * initial boot stuff.. At this point, the bootloader has already
+ * switched into OSF/1 PAL-code, and loaded us at the correct address
+ * (START_ADDR).  So there isn't much left for us to do: just set up
+ * the kernel global pointer and jump to the kernel entry-point.
+ */
+
+#include <linux/config.h>
+#include <asm/system.h>
+#include <asm/asm_offsets.h>
+
+.globl swapper_pg_dir
+.globl _stext
+swapper_pg_dir=SWAPPER_PGD
+
+        .set noreorder
+        .globl  __start
+        .ent    __start
+_stext:
+__start:
+        .prologue 0
+        br      $27,1f
+1:      ldgp    $29,0($27)
+        /* We need to get current_task_info loaded up...  */
+        lda     $8,init_thread_union
+        /* ... and find our stack ... */
+        lda     $30,0x4000 - SIZEOF_PT_REGS($8)
+        /* ... and then we can start the kernel.  */
+        jsr     $26,start_kernel
+        call_pal PAL_halt
+        .end __start
+
+#ifdef CONFIG_SMP
+        .align 3
+        .globl  __smp_callin
+        .ent    __smp_callin
+        /* On entry here from SRM console, the HWPCB of the per-cpu
+           slot for this processor has been loaded.  We've arranged
+           for the UNIQUE value for this process to contain the PCBB
+           of the target idle task.  */
+__smp_callin:
+        .prologue 1
+        ldgp    $29,0($27)      # First order of business, load the GP.
+
+        call_pal PAL_rduniq     # Grab the target PCBB.
+        mov     $0,$16          # Install it.
+        call_pal PAL_swpctx
+
+        lda     $8,0x3fff       # Find "current".
+        bic     $30,$8,$8
+        
+        jsr     $26,smp_callin
+        call_pal PAL_halt
+        .end __smp_callin
+#endif /* CONFIG_SMP */
+
+        #
+        # The following two functions are needed for supporting SRM PALcode
+        # on the PC164 (at least), since that PALcode manages the interrupt
+        # masking, and we cannot duplicate the effort without causing problems
+        #
+
+        .align 3
+        .globl  cserve_ena
+        .ent    cserve_ena
+cserve_ena:
+        .prologue 0
+        bis     $16,$16,$17
+        lda     $16,52($31)
+        call_pal PAL_cserve
+        ret     ($26)
+        .end    cserve_ena
+
+        .align 3
+        .globl  cserve_dis
+        .ent    cserve_dis
+cserve_dis:
+        .prologue 0
+        bis     $16,$16,$17
+        lda     $16,53($31)
+        call_pal PAL_cserve
+        ret     ($26)
+        .end    cserve_dis
+
+        #
+        # It is handy, on occasion, to make halt actually just loop. 
+        # Putting it here means we dont have to recompile the whole
+        # kernel.
+        #
+
+        .align 3
+        .globl  halt
+        .ent    halt
+halt:
+        .prologue 0
+        call_pal PAL_halt
+        .end    halt