1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
|
diff -Nru linux-2.6.19.2/arch/mips/Kconfig linux-ar7/arch/mips/Kconfig
--- linux-2.6.19.2/arch/mips/Kconfig 2006-12-12 02:32:53.000000000 +0700
+++ linux-ar7/arch/mips/Kconfig 2007-01-29 21:52:21.000000000 +0700
@@ -12,6 +12,18 @@
prompt "System type"
default SGI_IP22
+config AR7
+ bool "Texas Instruments AR7"
+ select BOOT_ELF32
+ select DMA_NONCOHERENT
+ select HW_HAS_PCI
+ select IRQ_CPU
+ select SWAP_IO_SPACE
+ select SYS_HAS_CPU_MIPS32_R1
+ select SYS_SUPPORTS_32BIT_KERNEL
+ select SYS_SUPPORTS_LITTLE_ENDIAN
+ select NEED_MULTIPLE_NODES
+
config MIPS_MTX1
bool "4G Systems MTX-1 board"
select DMA_NONCOHERENT
diff -Nru linux-2.6.19.2/arch/mips/Makefile linux-ar7/arch/mips/Makefile
--- linux-2.6.19.2/arch/mips/Makefile 2006-12-12 02:32:53.000000000 +0700
+++ linux-ar7/arch/mips/Makefile 2007-01-29 21:52:21.000000000 +0700
@@ -158,6 +158,13 @@
#
#
+# Texas Instruments AR7
+#
+core-$(CONFIG_AR7) += arch/mips/ar7/
+cflags-$(CONFIG_AR7) += -Iinclude/asm-mips/ar7
+load-$(CONFIG_AR7) += 0xffffffff94100000
+
+#
# Acer PICA 61, Mips Magnum 4000 and Olivetti M700.
#
core-$(CONFIG_MACH_JAZZ) += arch/mips/jazz/
diff -Nru linux-2.6.19.2/arch/mips/kernel/setup.c linux-ar7/arch/mips/kernel/setup.c
--- linux-2.6.19.2orig/arch/mips/kernel/setup.c 2006-12-12 02:32:53.000000000 +0700
+++ linux-ar7/arch/mips/kernel/setup.c 2007-03-04 22:32:13.000000000 +0700
@@ -236,7 +236,7 @@
* Initialize the bootmem allocator. It also setup initrd related data
* if needed.
*/
-#ifdef CONFIG_SGI_IP27
+#ifdef CONFIG_NEED_MULTIPLE_NODES
static void __init bootmem_init(void)
{
@@ -244,7 +244,7 @@
finalize_initrd();
}
-#else /* !CONFIG_SGI_IP27 */
+#else /* !CONFIG_NEED_MULTIPLE_NODES */
static void __init bootmem_init(void)
{
@@ -349,7 +349,7 @@
finalize_initrd();
}
-#endif /* CONFIG_SGI_IP27 */
+#endif /* CONFIG_NEED_MULTIPLE_NODES */
/*
* arch_mem_init - initialize memory managment subsystem
diff -Nru linux-2.6.19.2/arch/mips/kernel/traps.c linux-ar7/arch/mips/kernel/traps.c
--- linux-2.6.19.2/arch/mips/kernel/traps.c 2007-01-11 02:10:37.000000000 +0700
+++ linux-ar7/arch/mips/kernel/traps.c 2007-03-15 13:19:19.000000000 +0700
@@ -1072,11 +1072,6 @@
unsigned long exception_handlers[32];
unsigned long vi_handlers[64];
-/*
- * As a side effect of the way this is implemented we're limited
- * to interrupt handlers in the address range from
- * KSEG0 <= x < KSEG0 + 256mb on the Nevada. Oh well ...
- */
void *set_except_vector(int n, void *addr)
{
unsigned long handler = (unsigned long) addr;
@@ -1084,9 +1079,15 @@
exception_handlers[n] = handler;
if (n == 0 && cpu_has_divec) {
- *(volatile u32 *)(ebase + 0x200) = 0x08000000 |
- (0x03ffffff & (handler >> 2));
- flush_icache_range(ebase + 0x200, ebase + 0x204);
+ /* lui k0, 0x0000 */
+ *(volatile u32 *)(CAC_BASE+0x200) = 0x3c1a0000 | (handler >> 16);
+ /* ori k0, 0x0000 */
+ *(volatile u32 *)(CAC_BASE+0x204) = 0x375a0000 | (handler & 0xffff);
+ /* jr k0 */
+ *(volatile u32 *)(CAC_BASE+0x208) = 0x03400008;
+ /* nop */
+ *(volatile u32 *)(CAC_BASE+0x20C) = 0x00000000;
+ flush_icache_range(CAC_BASE+0x200, CAC_BASE+0x210);
}
return (void *)old_handler;
}
|
