Linux/arch/nios2/boot/compressed/head.S

Version: ~ [ linux-6.11.5 ] ~ [ linux-6.10.14 ] ~ [ linux-6.9.12 ] ~ [ linux-6.8.12 ] ~ [ linux-6.7.12 ] ~ [ linux-6.6.58 ] ~ [ linux-6.5.13 ] ~ [ linux-6.4.16 ] ~ [ linux-6.3.13 ] ~ [ linux-6.2.16 ] ~ [ linux-6.1.114 ] ~ [ linux-6.0.19 ] ~ [ linux-5.19.17 ] ~ [ linux-5.18.19 ] ~ [ linux-5.17.15 ] ~ [ linux-5.16.20 ] ~ [ linux-5.15.169 ] ~ [ linux-5.14.21 ] ~ [ linux-5.13.19 ] ~ [ linux-5.12.19 ] ~ [ linux-5.11.22 ] ~ [ linux-5.10.228 ] ~ [ linux-5.9.16 ] ~ [ linux-5.8.18 ] ~ [ linux-5.7.19 ] ~ [ linux-5.6.19 ] ~ [ linux-5.5.19 ] ~ [ linux-5.4.284 ] ~ [ linux-5.3.18 ] ~ [ linux-5.2.21 ] ~ [ linux-5.1.21 ] ~ [ linux-5.0.21 ] ~ [ linux-4.20.17 ] ~ [ linux-4.19.322 ] ~ [ linux-4.18.20 ] ~ [ linux-4.17.19 ] ~ [ linux-4.16.18 ] ~ [ linux-4.15.18 ] ~ [ linux-4.14.336 ] ~ [ linux-4.13.16 ] ~ [ linux-4.12.14 ] ~ [ linux-4.11.12 ] ~ [ linux-4.10.17 ] ~ [ linux-4.9.337 ] ~ [ linux-4.4.302 ] ~ [ linux-3.10.108 ] ~ [ linux-2.6.32.71 ] ~ [ linux-2.6.0 ] ~ [ linux-2.4.37.11 ] ~ [ unix-v6-master ] ~ [ ccs-tools-1.8.9 ] ~ [ policy-sample ] ~
Architecture: ~ [ i386 ] ~ [ alpha ] ~ [ m68k ] ~ [ mips ] ~ [ ppc ] ~ [ sparc ] ~ [ sparc64 ] ~

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1 /* 1 /* 2 * Copyright (C) 2009 Thomas Chou <thomas@wytro << 3 * << 4 * Based on arch/nios2/kernel/head.S << 5 * << 6 * This file is subject to the terms and condi 2 * This file is subject to the terms and conditions of the GNU General Public 7 * License. See the file "COPYING" in the main !! 3 * License. See the file "COPYING" in the main directory of this archive 8 * for more details. 4 * for more details. 9 * 5 * >> 6 * Copyright (C) 1994, 1995 Waldorf Electronics >> 7 * Written by Ralf Baechle and Andreas Busse >> 8 * Copyright (C) 1995 - 1999 Ralf Baechle >> 9 * Copyright (C) 1996 Paul M. Antoine >> 10 * Modified for DECStation and hence R3000 support by Paul M. Antoine >> 11 * Further modifications by David S. Miller and Harald Koerfgen >> 12 * Copyright (C) 1999 Silicon Graphics, Inc. 10 */ 13 */ 11 14 12 /* !! 15 #include <asm/asm.h> 13 * This code can be loaded anywhere, eg FLASH !! 16 #include <asm/regdef.h> 14 * as long as output does not overlap it. !! 17 15 */ !! 18 LEAF(start) >> 19 /* Save boot rom start args */ >> 20 move s0, a0 >> 21 move s1, a1 >> 22 move s2, a2 >> 23 move s3, a3 >> 24 >> 25 /* Clear BSS */ >> 26 PTR_LA a0, _edata >> 27 PTR_LA a2, _end >> 28 1: PTR_S zero, 0(a0) >> 29 PTR_ADDIU a0, a0, PTRSIZE >> 30 bne a2, a0, 1b >> 31 >> 32 PTR_LA a0, (.heap) /* heap address */ >> 33 PTR_LA sp, (.stack + 8192) /* stack address */ >> 34 >> 35 PTR_LA t9, decompress_kernel >> 36 jalr t9 >> 37 >> 38 2: >> 39 move a0, s0 >> 40 move a1, s1 >> 41 move a2, s2 >> 42 move a3, s3 >> 43 PTR_LI t9, KERNEL_ENTRY >> 44 jalr t9 >> 45 >> 46 3: >> 47 b 3b 16 48 17 #include <linux/linkage.h> !! 49 END(start) 18 #include <asm/cache.h> << 19 50 20 .text !! 51 .comm .heap,BOOT_HEAP_SIZE,4 21 .set noat !! 52 .comm .stack,4096*2,4 22 ENTRY(_start) << 23 wrctl status, r0 /* dis << 24 /* invalidate all instruction cache */ << 25 movia r1, NIOS2_ICACHE_SIZE << 26 movui r2, NIOS2_ICACHE_LINE_SIZE << 27 1: initi r1 << 28 sub r1, r1, r2 << 29 bgt r1, r0, 1b << 30 /* invalidate all data cache */ << 31 movia r1, NIOS2_DCACHE_SIZE << 32 movui r2, NIOS2_DCACHE_LINE_SIZE << 33 1: initd 0(r1) << 34 sub r1, r1, r2 << 35 bgt r1, r0, 1b << 36 << 37 nextpc r1 /* Fin << 38 chkadr: << 39 movia r2, chkadr << 40 beq r1, r2, finish_move /* We << 41 don << 42 /* move code, r1: src, r2: dest, r3: l << 43 addi r1, r1, (_start - chkadr) << 44 movia r2, _start /* Des << 45 movia r3, __bss_start /* End << 46 1: ldw r8, 0(r1) /* loa << 47 stw r8, 0(r2) /* sto << 48 addi r1, r1, 4 /* inc << 49 addi r2, r2, 4 /* inc << 50 blt r2, r3, 1b << 51 /* flush the data cache after moving * << 52 movia r1, NIOS2_DCACHE_SIZE << 53 movui r2, NIOS2_DCACHE_LINE_SIZE << 54 1: flushd 0(r1) << 55 sub r1, r1, r2 << 56 bgt r1, r0, 1b << 57 movia r1, finish_move << 58 jmp r1 /* jmp << 59 << 60 finish_move: << 61 /* zero out the .bss segment (uninitia << 62 movia r2, __bss_start /* pre << 63 movia r1, _end /* the << 64 1: stb r0, 0(r2) << 65 addi r2, r2, 1 << 66 bne r1, r2, 1b << 67 /* << 68 * set up the stack pointer, some wher << 69 * The stack space must be greater tha << 70 */ << 71 movia sp, 0x10000 << 72 add sp, sp, r1 << 73 /* save args passed from u-boot, maybe << 74 addi sp, sp, -16 << 75 stw r4, 0(sp) << 76 stw r5, 4(sp) << 77 stw r6, 8(sp) << 78 stw r7, 12(sp) << 79 /* decompress the kernel */ << 80 call decompress_kernel << 81 /* pass saved args to kernel */ << 82 ldw r4, 0(sp) << 83 ldw r5, 4(sp) << 84 ldw r6, 8(sp) << 85 ldw r7, 12(sp) << 86 << 87 /* flush all data cache after decompre << 88 movia r1, NIOS2_DCACHE_SIZE << 89 movui r2, NIOS2_DCACHE_LINE_SIZE << 90 1: flushd 0(r1) << 91 sub r1, r1, r2 << 92 bgt r1, r0, 1b << 93 /* flush all instruction cache */ << 94 movia r1, NIOS2_ICACHE_SIZE << 95 movui r2, NIOS2_ICACHE_LINE_SIZE << 96 1: flushi r1 << 97 sub r1, r1, r2 << 98 bgt r1, r0, 1b << 99 flushp << 100 /* jump to start real kernel */ << 101 movia r1, (CONFIG_NIOS2_MEM_BASE | C << 102 jmp r1 << 103 << 104 .balign 512 << 105 fake_headers_as_bzImage: << 106 .short 0 << 107 .ascii "HdrS" << 108 .short 0x0202 << 109 .short 0 << 110 .short 0 << 111 .byte 0x00, 0x10 << 112 .short 0 << 113 .byte 0 << 114 .byte 1 << 115 .byte 0x00, 0x80 << 116 .long 0 << 117 .long 0 <<

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Linux/arch/nios2/boot/compressed/head.S

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Differences between /arch/nios2/boot/compressed/head.S (Architecture m68k) and /arch/mips/boot/compressed/head.S (Architecture mips)

TOMOYO Linux Cross Reference Linux/arch/nios2/boot/compressed/head.S

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Differences between /arch/nios2/boot/compressed/head.S (Architecture m68k) and /arch/mips/boot/compressed/head.S (Architecture mips)

TOMOYO Linux Cross Reference
Linux/arch/nios2/boot/compressed/head.S