diff options
Diffstat (limited to 'arch/arm/kernel/head-armv.S')
| -rw-r--r-- | arch/arm/kernel/head-armv.S | 74 |
1 files changed, 62 insertions, 12 deletions
diff --git a/arch/arm/kernel/head-armv.S b/arch/arm/kernel/head-armv.S index e53b7144f..2219d37c3 100644 --- a/arch/arm/kernel/head-armv.S +++ b/arch/arm/kernel/head-armv.S @@ -7,6 +7,9 @@ */ #include <linux/config.h> #include <linux/linkage.h> + +#define DEBUG + .text .align @@ -19,18 +22,20 @@ * MMU off. Note! These should be unique!!! Please read Documentation/ARM-README * for more information. * - * r1 = 0 -> ebsa110 (Ram @ 0x00000000) - * r1 = 1 -> RPC (Ram @ 0x10000000) - * r1 = 2 -> ebsit (???) + * r1 = 0 -> ebsa110 + * r1 = 1 -> RPC + * r1 = 2 -> ebsit * r1 = 3 -> nexuspci - * r1 = 4 -> ebsa285 (Ram @ 0x00000000) + * r1 = 4 -> ebsa285 + * r1 = 5 -> vnc + * r1 = 6 -> CATS */ ENTRY(stext) ENTRY(_stext) __entry: teq r0, #0 @ check for illegal entry... bne .Lerror @ loop indefinitely - cmp r1, #5 @ Unknown machine architecture + cmp r1, #7 @ Unknown machine architecture bge .Lerror @ @ First thing to do is to get the page tables set up so that we can call the kernel @@ -116,7 +121,8 @@ __entry: @ we lose this page! mov pc, lr -.Lerror: mov r0, #0x02000000 +.Lerror: +1: mov r0, #0x02000000 mov r1, #0x11 orr r1, r1, r1, lsl #8 orr r1, r1, r1, lsl #16 @@ -124,7 +130,7 @@ __entry: str r1, [r0], #4 str r1, [r0], #4 str r1, [r0], #4 - b .Lerror + b 1b .Lbranch: .long .Lalready_done_mmap @ Real address of routine @@ -153,12 +159,22 @@ __entry: .long 0 @ EBSA285 - .long SYMBOL_NAME(swapper_pg_dir) - 0xc0000000 @ Address of page tables (physical) + .long SYMBOL_NAME(swapper_pg_dir) - 0xc0000000 @ Address of page tables (physical) .long 0 @ Address of RAM .long 0x24000000 @ I/O base address (0x42000000 -> 0xFE000000) .long 0 + @ Corel VNC + .long SYMBOL_NAME(swapper_pg_dir) - 0xc0000000 @ Address of page tables (physical) + .long 0 @ Address of RAM + .long 0x24000000 @ I/O base address (0x42000000 -> 0xfe000000) + .long 0 + @ CATS + .long SYMBOL_NAME(swapper_pg_dir) - 0xc0000000 @ Address of page tables (physical) + .long 0 @ Address of RAM + .long 0x24000000 @ I/O base address (0x42000000 -> 0xfe000000) + .long 0 .LCProcTypes: @ ARM6 / 610 .long 0x41560600 @@ -167,13 +183,20 @@ __entry: b .Larmv3_flush_early @ arm v3 flush & ctrl early setup mov pc, lr - @ ARM7 / 710 + @ ARM7 .long 0x41007000 .long 0xfffff000 .long 0x00000c12 b .Larmv3_flush_late @ arm v3 flush & ctrl late setup mov pc, lr + @ ARM710 + .long 0x41007000 + .long 0xfff8f000 @ arm710 processors are weird + .long 0x00000c12 + b .Larmv3_flush_late @ arm v3 flush & ctrl late setup + mov pc, lr + @ StrongARM .long 0x4401a100 .long 0xfffffff0 @@ -245,8 +268,11 @@ __entry: mov fp, #0 b SYMBOL_NAME(start_kernel) -#if 1 - +#ifdef DEBUG +/* + * Some debugging routines (useful if you've got MM problems and + * printk isn't working). For DEBUGGING ONLY!!! + */ #if defined(CONFIG_ARCH_RPC) .macro addruart,rx mov \rx, #0xe0000000 @@ -261,6 +287,7 @@ __entry: .macro busyuart,rd,rx 1002: ldrb \rd, [\rx, #0x14] and \rd, \rd, #0x60 + teq \rd, #0x60 bne 1002b .endm @@ -283,6 +310,7 @@ __entry: .macro busyuart,rd,rx 1002: ldrb \rd, [\rx, #0x14] and \rd, \rd, #0x60 + teq \rd, #0x60 bne 1002b .endm @@ -292,7 +320,7 @@ __entry: beq 1001b .endm -#elif defined(CONFIG_ARCH_EBSA285) +#elif defined(CONFIG_ARCH_EBSA285) || defined(CONFIG_ARCH_VNC) .macro addruart,rx mov \rx, #0xfe000000 .endm @@ -309,6 +337,26 @@ __entry: .macro waituart,rd,rx .endm + +#elif defined(CONFIG_ARCH_NEXUSPCI) + .macro addruart,rx + ldr \rx, =0xfff00000 + .endm + + .macro senduart,rd,rx + str \rd, [\rx, #0xc] + .endm + + .macro busyuart,rd,rx +1001: ldr \rd, [\rx, #0x4] + tst \rd, #1 << 0 + bne 1001b + .endm + + .macro waituart,rd,rx + .endm +#else +#error Unknown architecture #endif /* @@ -359,6 +407,8 @@ ENTRY(printch) mov r0, #0 b 1b + .ltorg + .bss hexbuf: .space 16 |