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!

3 files changed, 302 insertions, 0 deletions

diff --git a/arch/sh/kernel/cpu/sh3/Makefile b/arch/sh/kernel/cpu/sh3/Makefile
new file mode 100644
index 0000000..a64532e
--- /dev/null
+++ b/arch/sh/kernel/cpu/sh3/Makefile
@@ -0,0 +1,6 @@
+#
+# Makefile for the Linux/SuperH SH-3 backends.
+#
+
+obj-y	:= ex.o probe.o
+
diff --git a/arch/sh/kernel/cpu/sh3/ex.S b/arch/sh/kernel/cpu/sh3/ex.S
new file mode 100644
index 0000000..966c085
--- /dev/null
+++ b/arch/sh/kernel/cpu/sh3/ex.S
@@ -0,0 +1,199 @@
+/*
+ *  arch/sh/kernel/cpu/sh3/ex.S
+ *
+ *  The SH-3 exception vector table.
+
+ *  Copyright (C) 1999, 2000, 2002  Niibe Yutaka
+ *  Copyright (C) 2003  Paul Mundt
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ */
+#include <linux/linkage.h>
+#include <linux/config.h>
+
+	.align 2
+	.data
+
+ENTRY(exception_handling_table)
+	.long	exception_error		/* 000 */
+	.long	exception_error
+#if defined(CONFIG_MMU)
+	.long	tlb_miss_load		/* 040 */
+	.long	tlb_miss_store
+	.long	initial_page_write
+	.long	tlb_protection_violation_load
+	.long	tlb_protection_violation_store
+	.long	address_error_load
+	.long	address_error_store	/* 100 */
+#else
+	.long	exception_error	! tlb miss load		/* 040 */
+	.long	exception_error	! tlb miss store
+	.long	exception_error	! initial page write
+	.long	exception_error	! tlb prot violation load
+	.long	exception_error	! tlb prot violation store
+	.long	exception_error	! address error load
+	.long	exception_error	! address error store	/* 100 */
+#endif
+	.long	exception_error	! fpu_exception	/* 120 */
+	.long	exception_error			/* 140 */
+	.long	system_call	! Unconditional Trap	 /* 160 */
+	.long	exception_error	! reserved_instruction (filled by trap_init) /* 180 */
+	.long	exception_error	! illegal_slot_instruction (filled by trap_init) /*1A0*/
+ENTRY(nmi_slot)
+#if defined (CONFIG_KGDB_NMI)
+	.long	debug_enter	/* 1C0 */	! Allow trap to debugger
+#else
+	.long	exception_none	/* 1C0 */	! Not implemented yet
+#endif
+ENTRY(user_break_point_trap)
+	.long	break_point_trap	/* 1E0 */
+ENTRY(interrupt_table)
+	! external hardware
+	.long	do_IRQ	! 0000		/* 200 */
+	.long	do_IRQ	! 0001
+	.long	do_IRQ	! 0010
+	.long	do_IRQ	! 0011
+	.long	do_IRQ	! 0100
+	.long	do_IRQ	! 0101
+	.long	do_IRQ	! 0110
+	.long	do_IRQ	! 0111
+	.long	do_IRQ	! 1000		/* 300 */
+	.long	do_IRQ	! 1001
+	.long	do_IRQ	! 1010
+	.long	do_IRQ	! 1011
+	.long	do_IRQ	! 1100
+	.long	do_IRQ	! 1101
+	.long	do_IRQ	! 1110
+	.long	exception_error		
+	! Internal hardware
+	.long	do_IRQ	! TMU0 tuni0	/* 400 */
+	.long	do_IRQ	! TMU1 tuni1
+	.long	do_IRQ	! TMU2 tuni2
+	.long	do_IRQ	!      ticpi2
+	.long	do_IRQ	! RTC  ati
+	.long	do_IRQ	!      pri
+	.long	do_IRQ	!      cui
+	.long	do_IRQ	! SCI  eri
+	.long	do_IRQ	!      rxi	/* 500 */
+	.long	do_IRQ	!      txi
+	.long	do_IRQ	!      tei
+	.long	do_IRQ	! WDT  iti	/* 560 */
+	.long	do_IRQ	! REF  rcmi
+	.long	do_IRQ	!      rovi
+	.long	do_IRQ			
+	.long	do_IRQ			/* 5E0 */
+#if  defined(CONFIG_CPU_SUBTYPE_SH7707) || defined(CONFIG_CPU_SUBTYPE_SH7709) || \
+     defined(CONFIG_CPU_SUBTYPE_SH7300) || defined(CONFIG_CPU_SUBTYPE_SH7705)
+	.long	do_IRQ	! 32 IRQ  irq0	/* 600 */
+	.long	do_IRQ	! 33      irq1
+	.long	do_IRQ	! 34      irq2
+	.long	do_IRQ	! 35      irq3
+	.long	do_IRQ	! 36      irq4
+	.long	do_IRQ	! 37      irq5
+	.long	do_IRQ	! 38
+	.long	do_IRQ	! 39
+	.long	do_IRQ	! 40 PINT pint0-7	/* 700 */
+	.long	do_IRQ	! 41      pint8-15
+	.long	do_IRQ	! 42
+	.long	do_IRQ	! 43
+	.long	do_IRQ	! 44
+	.long	do_IRQ	! 45	
+	.long	do_IRQ	! 46
+	.long	do_IRQ	! 47
+	.long	do_IRQ	! 48 DMAC dei0	/* 800 */
+	.long	do_IRQ	! 49      dei1
+	.long	do_IRQ	! 50      dei2
+	.long	do_IRQ	! 51      dei3
+	.long	do_IRQ	! 52 IrDA eri1
+	.long	do_IRQ	! 53      rxi1
+	.long	do_IRQ	! 54      bri1
+	.long	do_IRQ	! 55      txi1
+	.long	do_IRQ	! 56 SCIF eri2
+	.long	do_IRQ	! 57      rxi2
+	.long	do_IRQ	! 58      bri2
+	.long	do_IRQ	! 59      txi2
+	.long	do_IRQ	! 60 ADC  adi	/* 980 */
+#if defined(CONFIG_CPU_SUBTYPE_SH7705)
+	.long	exception_none	! 61	/* 9A0 */
+	.long	exception_none	! 62
+	.long	exception_none	! 63
+	.long	exception_none	! 64	/* A00 */
+	.long	do_IRQ	! 65 USB  usi0
+	.long	do_IRQ	! 66      usi1
+	.long	exception_none	! 67
+	.long	exception_none	! 68
+	.long	exception_none	! 69
+	.long	exception_none	! 70
+	.long	exception_none	! 71
+	.long	exception_none	! 72	/* B00 */
+	.long	exception_none	! 73
+	.long	exception_none	! 74
+	.long	exception_none	! 75
+	.long	exception_none	! 76
+	.long	exception_none	! 77
+	.long	exception_none	! 78
+	.long	exception_none	! 79
+	.long	do_IRQ	! 80 TPU0 tpi0	/* C00 */
+	.long	do_IRQ	! 81 TPU1 tpi1
+	.long	exception_none	! 82
+	.long	exception_none	! 83
+	.long	do_IRQ	! 84 TPU2 tpi2
+	.long	do_IRQ	! 85 TPU3 tpi3	/* CA0 */
+#endif
+#if defined(CONFIG_CPU_SUBTYPE_SH7707) || defined(CONFIG_CPU_SUBTYPE_SH7300)
+	.long   do_IRQ	! 61 LCDC lcdi	/* 9A0 */
+	.long   do_IRQ	! 62 PCC  pcc0i
+	.long   do_IRQ	! 63      pcc1i	/* 9E0 */
+#endif
+#if defined(CONFIG_CPU_SUBTYPE_SH7300)
+	.long   do_IRQ	! 64
+	.long   do_IRQ	! 65
+	.long   do_IRQ	! 66
+	.long   do_IRQ	! 67
+	.long   do_IRQ	! 68
+	.long   do_IRQ	! 69
+	.long   do_IRQ	! 70
+	.long   do_IRQ	! 71
+	.long   do_IRQ	! 72
+	.long   do_IRQ	! 73
+	.long   do_IRQ	! 74
+	.long   do_IRQ	! 75
+	.long   do_IRQ	! 76
+	.long   do_IRQ	! 77
+	.long   do_IRQ	! 78
+	.long   do_IRQ	! 79
+	.long   do_IRQ	! 80 SCIF0(SH7300)
+	.long   do_IRQ	! 81
+	.long   do_IRQ	! 82
+	.long   do_IRQ	! 83
+	.long   do_IRQ	! 84
+	.long   do_IRQ	! 85
+	.long   do_IRQ	! 86
+	.long   do_IRQ	! 87
+	.long   do_IRQ	! 88
+	.long   do_IRQ	! 89
+	.long   do_IRQ	! 90
+	.long   do_IRQ	! 91
+	.long   do_IRQ	! 92
+	.long   do_IRQ	! 93
+	.long   do_IRQ	! 94
+	.long   do_IRQ	! 95
+	.long   do_IRQ	! 96
+	.long   do_IRQ	! 97
+	.long   do_IRQ	! 98
+	.long   do_IRQ	! 99
+	.long   do_IRQ	! 100
+	.long   do_IRQ	! 101
+	.long   do_IRQ	! 102
+	.long   do_IRQ	! 103
+	.long   do_IRQ	! 104
+	.long   do_IRQ	! 105
+	.long   do_IRQ	! 106
+	.long   do_IRQ	! 107
+	.long   do_IRQ	! 108
+#endif
+#endif
+
diff --git a/arch/sh/kernel/cpu/sh3/probe.c b/arch/sh/kernel/cpu/sh3/probe.c
new file mode 100644
index 0000000..5cdc886
--- /dev/null
+++ b/arch/sh/kernel/cpu/sh3/probe.c
@@ -0,0 +1,97 @@
+/*
+ * arch/sh/kernel/cpu/sh3/probe.c
+ *
+ * CPU Subtype Probing for SH-3.
+ *
+ * Copyright (C) 1999, 2000  Niibe Yutaka
+ * Copyright (C) 2002  Paul Mundt
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+
+#include <linux/init.h>
+#include <asm/processor.h>
+#include <asm/cache.h>
+#include <asm/io.h>
+
+int __init detect_cpu_and_cache_system(void)
+{
+	unsigned long addr0, addr1, data0, data1, data2, data3;
+
+	jump_to_P2();
+	/*
+	 * Check if the entry shadows or not.
+	 * When shadowed, it's 128-entry system.
+	 * Otherwise, it's 256-entry system.
+	 */
+	addr0 = CACHE_OC_ADDRESS_ARRAY + (3 << 12);
+	addr1 = CACHE_OC_ADDRESS_ARRAY + (1 << 12);
+
+	/* First, write back & invalidate */
+	data0  = ctrl_inl(addr0);
+	ctrl_outl(data0&~(SH_CACHE_VALID|SH_CACHE_UPDATED), addr0);
+	data1  = ctrl_inl(addr1);
+	ctrl_outl(data1&~(SH_CACHE_VALID|SH_CACHE_UPDATED), addr1);
+
+	/* Next, check if there's shadow or not */
+	data0 = ctrl_inl(addr0);
+	data0 ^= SH_CACHE_VALID;
+	ctrl_outl(data0, addr0);
+	data1 = ctrl_inl(addr1);
+	data2 = data1 ^ SH_CACHE_VALID;
+	ctrl_outl(data2, addr1);
+	data3 = ctrl_inl(addr0);
+
+	/* Lastly, invaliate them. */
+	ctrl_outl(data0&~SH_CACHE_VALID, addr0);
+	ctrl_outl(data2&~SH_CACHE_VALID, addr1);
+
+	back_to_P1();
+
+	cpu_data->dcache.ways		= 4;
+	cpu_data->dcache.entry_shift	= 4;
+	cpu_data->dcache.linesz		= L1_CACHE_BYTES;
+	cpu_data->dcache.flags		= 0;
+
+	/*
+	 * 7709A/7729 has 16K cache (256-entry), while 7702 has only
+	 * 2K(direct) 7702 is not supported (yet)
+	 */
+	if (data0 == data1 && data2 == data3) {	/* Shadow */
+		cpu_data->dcache.way_incr	= (1 << 11);
+		cpu_data->dcache.entry_mask	= 0x7f0;
+		cpu_data->dcache.sets		= 128;
+		cpu_data->type = CPU_SH7708;
+
+		cpu_data->flags |= CPU_HAS_MMU_PAGE_ASSOC;
+	} else {				/* 7709A or 7729  */
+		cpu_data->dcache.way_incr	= (1 << 12);
+		cpu_data->dcache.entry_mask	= 0xff0;
+		cpu_data->dcache.sets		= 256;
+		cpu_data->type = CPU_SH7729;
+
+#if defined(CONFIG_CPU_SUBTYPE_SH7705)
+		cpu_data->type = CPU_SH7705;
+
+#if defined(CONFIG_SH7705_CACHE_32KB)
+		cpu_data->dcache.way_incr	= (1 << 13);
+		cpu_data->dcache.entry_mask	= 0x1ff0;
+		cpu_data->dcache.sets		= 512;
+		ctrl_outl(CCR_CACHE_32KB, CCR3);
+#else
+		ctrl_outl(CCR_CACHE_16KB, CCR3);
+#endif
+#endif
+	}
+
+	/*
+	 * SH-3 doesn't have separate caches
+	 */
+	cpu_data->dcache.flags |= SH_CACHE_COMBINED;
+	cpu_data->icache = cpu_data->dcache;
+
+	return 0;
+}
+