Loading...
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 99 100 101 102 103 104 105 106 107 108 109 110 | /* * linux/arch/h8300/platform/h8300h/h8max/crt0_ram.S * * Yoshinori Sato <ysato@users.sourceforge.jp> * * Platform depend startup * Target Archtecture: H8MAX * Memory Layout : RAM */ #define ASSEMBLY #include <asm/linkage.h> #if !defined(CONFIG_BLKDEV_RESERVE) #if defined(CONFIG_GDB_DEBUG) #define RAMEND (__ramend - 0xc000) #else #define RAMEND __ramend #endif #else #define RAMEND CONFIG_BLKDEV_RESERVE_ADDRESS #endif .global __start .global _command_line .global __platform_gpio_table .global __target_name .h8300h .section .text .file "crt0_ram.S" /* CPU Reset entry */ __start: mov.l #RAMEND,sp ldc #0x80,ccr /* Peripheral Setup */ #if defined(CONFIG_MTD_UCLINUX) /* move romfs image */ jsr @__move_romfs #endif /* .bss clear */ mov.l #__sbss,er5 mov.l #__ebss,er4 sub.l er5,er4 shlr er4 shlr er4 sub.l er0,er0 1: mov.l er0,@er5 adds #4,er5 dec.l #1,er4 bne 1b /* copy kernel commandline */ mov.l #COMMAND_START,er5 mov.l #_command_line,er6 mov.w #512,r4 eepmov.w /* uClinux kernel start */ ldc #0x90,ccr /* running kernel */ mov.l #_init_thread_union,sp add.l #0x2000,sp jsr @_start_kernel _exit: jmp _exit rts /* I/O port assign information */ __platform_gpio_table: mov.l #gpio_table,er0 rts gpio_table: ;; P1DDR .byte 0xff,0xff ;; P2DDR .byte 0xff,0xff ;; P3DDR .byte 0x00,0x00 ;; P4DDR .byte 0x00,0x00 ;; P5DDR .byte 0x01,0x01 ;; P6DDR .byte 0xf6,0xf6 ;; dummy .byte 0x00,0x00 ;; P8DDR .byte 0xee,0xee ;; P9DDR .byte 0x00,0x00 ;; PADDR .byte 0x00,0x00 ;; PBDDR .byte 0x30,0x30 __target_name: .asciz "H8MAX" .section .bootvec,"ax" jmp @__start |