Linux-2.6.12-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!
diff --git a/arch/mips/dec/boot/Makefile b/arch/mips/dec/boot/Makefile
new file mode 100644
index 0000000..bcea416
--- /dev/null
+++ b/arch/mips/dec/boot/Makefile
@@ -0,0 +1,12 @@
+#
+# Makefile for the DECstation family specific parts of the kernel
+#
+
+netboot: all
+ $(LD) -N -G 0 -T ld.ecoff ../../boot/zImage \
+ dec_boot.o ramdisk.img -o nbImage
+
+obj-y := decstation.o
+
+clean:
+ rm -f nbImage
diff --git a/arch/mips/dec/boot/decstation.c b/arch/mips/dec/boot/decstation.c
new file mode 100644
index 0000000..56fd427
--- /dev/null
+++ b/arch/mips/dec/boot/decstation.c
@@ -0,0 +1,83 @@
+/*
+ * arch/mips/dec/decstation.c
+ */
+
+#define RELOC
+#define INITRD
+#define DEBUG_BOOT
+
+/*
+ * Magic number indicating REX PROM available on DECSTATION.
+ */
+#define REX_PROM_MAGIC 0x30464354
+
+#define REX_PROM_CLEARCACHE 0x7c/4
+#define REX_PROM_PRINTF 0x30/4
+
+#define VEC_RESET 0xBFC00000 /* Prom base address */
+#define PMAX_PROM_ENTRY(x) (VEC_RESET+((x)*8)) /* Prom jump table */
+#define PMAX_PROM_PRINTF PMAX_PROM_ENTRY(17)
+
+#define PARAM (k_start + 0x2000)
+
+#define LOADER_TYPE (*(unsigned char *) (PARAM+0x210))
+#define INITRD_START (*(unsigned long *) (PARAM+0x218))
+#define INITRD_SIZE (*(unsigned long *) (PARAM+0x21c))
+
+extern int _ftext, _end; /* begin and end of kernel image */
+extern void kernel_entry(int, char **, unsigned long, int *);
+
+void * memcpy(void * dest, const void *src, unsigned int count)
+{
+ unsigned long *tmp = (unsigned long *) dest, *s = (unsigned long *) src;
+
+ count >>= 2;
+ while (count--)
+ *tmp++ = *s++;
+
+ return dest;
+}
+
+void dec_entry(int argc, char **argv,
+ unsigned long magic, int *prom_vec)
+{
+ void (*rex_clear_cache)(void);
+ int (*prom_printf)(char *, ...);
+ unsigned long k_start, len;
+
+ /*
+ * The DS5100 leaves cpu with BEV enabled, clear it.
+ */
+ asm( "lui\t$8,0x3000\n\t"
+ "mtc0\t$8,$12\n\t"
+ ".section\t.sdata\n\t"
+ ".section\t.sbss\n\t"
+ ".section\t.text"
+ : : : "$8");
+
+#ifdef DEBUG_BOOT
+ if (magic == REX_PROM_MAGIC) {
+ prom_printf = (int (*)(char *, ...)) *(prom_vec + REX_PROM_PRINTF);
+ } else {
+ prom_printf = (int (*)(char *, ...)) PMAX_PROM_PRINTF;
+ }
+ prom_printf("Launching kernel...\n");
+#endif
+
+ k_start = (unsigned long) (&kernel_entry) & 0xffff0000;
+
+#ifdef RELOC
+ /*
+ * Now copy kernel image to its destination.
+ */
+ len = ((unsigned long) (&_end) - k_start);
+ memcpy((void *)k_start, &_ftext, len);
+#endif
+
+ if (magic == REX_PROM_MAGIC) {
+ rex_clear_cache = (void (*)(void)) * (prom_vec + REX_PROM_CLEARCACHE);
+ rex_clear_cache();
+ }
+
+ kernel_entry(argc, argv, magic, prom_vec);
+}
diff --git a/arch/mips/dec/boot/ld.ecoff b/arch/mips/dec/boot/ld.ecoff
new file mode 100644
index 0000000..aaa633d
--- /dev/null
+++ b/arch/mips/dec/boot/ld.ecoff
@@ -0,0 +1,43 @@
+OUTPUT_FORMAT("ecoff-littlemips")
+OUTPUT_ARCH(mips)
+ENTRY(dec_entry)
+SECTIONS
+{
+ . = 0x80200000;
+
+ .text :
+ {
+ _ftext = .;
+ *(.text)
+ *(.fixup)
+ }
+ .rdata :
+ {
+ *(.rodata .rodata.* .rdata)
+ }
+ .data :
+ {
+ . = ALIGN(0x1000);
+ ramdisk.img (.data)
+ *(.data)
+ }
+ .sdata :
+ {
+ *(.sdata)
+ }
+ _gp = .;
+ .sbss :
+ {
+ *(.sbss)
+ *(.scommon)
+ }
+ .bss :
+ {
+ *(.dynbss)
+ *(.bss)
+ *(COMMON)
+ }
+ /DISCARD/ : {
+ *(.reginfo .mdebug .note)
+ }
+}