forked from Minki/linux
2c1cfb2db6
Machines with sun4c support are very rare these days, and noone is using them for any practical purposes. The sun4c support has been know broken for quite some time too. So rather than trying to keep it up-to-date, lets get rid of it. This allows us to do some very welcome cleanup of sparc32 support. Updated the former sun4c specifc nmi (which was also used for sun4m UP) to be a generic UP NMI. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
1324 lines
44 KiB
ArmAsm
1324 lines
44 KiB
ArmAsm
/*
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* head.S: The initial boot code for the Sparc port of Linux.
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*
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* Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
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* Copyright (C) 1995,1999 Pete Zaitcev (zaitcev@yahoo.com)
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* Copyright (C) 1996 Miguel de Icaza (miguel@nuclecu.unam.mx)
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* Copyright (C) 1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
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* Copyright (C) 1997 Michael A. Griffith (grif@acm.org)
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*
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* CompactPCI platform by Eric Brower, 1999.
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*/
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#include <linux/version.h>
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#include <linux/init.h>
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#include <asm/head.h>
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#include <asm/asi.h>
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#include <asm/contregs.h>
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#include <asm/ptrace.h>
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#include <asm/psr.h>
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#include <asm/page.h>
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#include <asm/kdebug.h>
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#include <asm/winmacro.h>
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#include <asm/thread_info.h> /* TI_UWINMASK */
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#include <asm/errno.h>
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#include <asm/pgtsrmmu.h> /* SRMMU_PGDIR_SHIFT */
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.data
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/*
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* The following are used with the prom_vector node-ops to figure out
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* the cpu-type
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*/
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.align 4
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cputyp:
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.word 1
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.align 4
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.globl cputypval
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cputypval:
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.asciz "sun4c"
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.ascii " "
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cputypvalend:
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cputypvallen = cputypvar - cputypval
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.align 4
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/*
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* Sun people can't spell worth damn. "compatability" indeed.
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* At least we *know* we can't spell, and use a spell-checker.
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*/
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/* Uh, actually Linus it is I who cannot spell. Too much murky
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* Sparc assembly will do this to ya.
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*/
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cputypvar:
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.asciz "compatability"
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/* Tested on SS-5, SS-10. Probably someone at Sun applied a spell-checker. */
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.align 4
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cputypvar_sun4m:
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.asciz "compatible"
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.align 4
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sun4_notsup:
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.asciz "Sparc-Linux sun4 support does no longer exist.\n\n"
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.align 4
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sun4e_notsup:
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.asciz "Sparc-Linux sun4e support does not exist\n\n"
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.align 4
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/* The Sparc trap table, bootloader gives us control at _start. */
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__HEAD
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.globl _stext, _start, __stext
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.globl trapbase
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_start: /* danger danger */
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__stext:
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_stext:
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trapbase:
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#ifdef CONFIG_SMP
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trapbase_cpu0:
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#endif
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/* We get control passed to us here at t_zero. */
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t_zero: b gokernel; nop; nop; nop;
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t_tflt: SPARC_TFAULT /* Inst. Access Exception */
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t_bins: TRAP_ENTRY(0x2, bad_instruction) /* Illegal Instruction */
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t_pins: TRAP_ENTRY(0x3, priv_instruction) /* Privileged Instruction */
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t_fpd: TRAP_ENTRY(0x4, fpd_trap_handler) /* Floating Point Disabled */
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t_wovf: WINDOW_SPILL /* Window Overflow */
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t_wunf: WINDOW_FILL /* Window Underflow */
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t_mna: TRAP_ENTRY(0x7, mna_handler) /* Memory Address Not Aligned */
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t_fpe: TRAP_ENTRY(0x8, fpe_trap_handler) /* Floating Point Exception */
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t_dflt: SPARC_DFAULT /* Data Miss Exception */
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t_tio: TRAP_ENTRY(0xa, do_tag_overflow) /* Tagged Instruction Ovrflw */
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t_wpt: TRAP_ENTRY(0xb, do_watchpoint) /* Watchpoint Detected */
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t_badc: BAD_TRAP(0xc) BAD_TRAP(0xd) BAD_TRAP(0xe) BAD_TRAP(0xf) BAD_TRAP(0x10)
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t_irq1: TRAP_ENTRY_INTERRUPT(1) /* IRQ Software/SBUS Level 1 */
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t_irq2: TRAP_ENTRY_INTERRUPT(2) /* IRQ SBUS Level 2 */
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t_irq3: TRAP_ENTRY_INTERRUPT(3) /* IRQ SCSI/DMA/SBUS Level 3 */
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t_irq4: TRAP_ENTRY_INTERRUPT(4) /* IRQ Software Level 4 */
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t_irq5: TRAP_ENTRY_INTERRUPT(5) /* IRQ SBUS/Ethernet Level 5 */
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t_irq6: TRAP_ENTRY_INTERRUPT(6) /* IRQ Software Level 6 */
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t_irq7: TRAP_ENTRY_INTERRUPT(7) /* IRQ Video/SBUS Level 5 */
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t_irq8: TRAP_ENTRY_INTERRUPT(8) /* IRQ SBUS Level 6 */
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t_irq9: TRAP_ENTRY_INTERRUPT(9) /* IRQ SBUS Level 7 */
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t_irq10:TRAP_ENTRY_INTERRUPT(10) /* IRQ Timer #1 (one we use) */
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t_irq11:TRAP_ENTRY_INTERRUPT(11) /* IRQ Floppy Intr. */
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t_irq12:TRAP_ENTRY_INTERRUPT(12) /* IRQ Zilog serial chip */
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t_irq13:TRAP_ENTRY_INTERRUPT(13) /* IRQ Audio Intr. */
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t_irq14:TRAP_ENTRY_INTERRUPT(14) /* IRQ Timer #2 */
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.globl t_nmi
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t_nmi: TRAP_ENTRY(0x1f, linux_trap_ipi15)
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t_racc: TRAP_ENTRY(0x20, do_reg_access) /* General Register Access Error */
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t_iacce:BAD_TRAP(0x21) /* Instr Access Error */
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t_bad22:BAD_TRAP(0x22) BAD_TRAP(0x23)
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t_cpdis:TRAP_ENTRY(0x24, do_cp_disabled) /* Co-Processor Disabled */
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t_uflsh:SKIP_TRAP(0x25, unimp_flush) /* Unimplemented FLUSH inst. */
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t_bad26:BAD_TRAP(0x26) BAD_TRAP(0x27)
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t_cpexc:TRAP_ENTRY(0x28, do_cp_exception) /* Co-Processor Exception */
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t_dacce:SPARC_DFAULT /* Data Access Error */
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t_hwdz: TRAP_ENTRY(0x2a, do_hw_divzero) /* Division by zero, you lose... */
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t_dserr:BAD_TRAP(0x2b) /* Data Store Error */
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t_daccm:BAD_TRAP(0x2c) /* Data Access MMU-Miss */
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t_bad2d:BAD_TRAP(0x2d) BAD_TRAP(0x2e) BAD_TRAP(0x2f) BAD_TRAP(0x30) BAD_TRAP(0x31)
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t_bad32:BAD_TRAP(0x32) BAD_TRAP(0x33) BAD_TRAP(0x34) BAD_TRAP(0x35) BAD_TRAP(0x36)
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t_bad37:BAD_TRAP(0x37) BAD_TRAP(0x38) BAD_TRAP(0x39) BAD_TRAP(0x3a) BAD_TRAP(0x3b)
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t_iaccm:BAD_TRAP(0x3c) /* Instr Access MMU-Miss */
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t_bad3d:BAD_TRAP(0x3d) BAD_TRAP(0x3e) BAD_TRAP(0x3f) BAD_TRAP(0x40) BAD_TRAP(0x41)
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t_bad42:BAD_TRAP(0x42) BAD_TRAP(0x43) BAD_TRAP(0x44) BAD_TRAP(0x45) BAD_TRAP(0x46)
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t_bad47:BAD_TRAP(0x47) BAD_TRAP(0x48) BAD_TRAP(0x49) BAD_TRAP(0x4a) BAD_TRAP(0x4b)
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t_bad4c:BAD_TRAP(0x4c) BAD_TRAP(0x4d) BAD_TRAP(0x4e) BAD_TRAP(0x4f) BAD_TRAP(0x50)
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t_bad51:BAD_TRAP(0x51) BAD_TRAP(0x52) BAD_TRAP(0x53) BAD_TRAP(0x54) BAD_TRAP(0x55)
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t_bad56:BAD_TRAP(0x56) BAD_TRAP(0x57) BAD_TRAP(0x58) BAD_TRAP(0x59) BAD_TRAP(0x5a)
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t_bad5b:BAD_TRAP(0x5b) BAD_TRAP(0x5c) BAD_TRAP(0x5d) BAD_TRAP(0x5e) BAD_TRAP(0x5f)
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t_bad60:BAD_TRAP(0x60) BAD_TRAP(0x61) BAD_TRAP(0x62) BAD_TRAP(0x63) BAD_TRAP(0x64)
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t_bad65:BAD_TRAP(0x65) BAD_TRAP(0x66) BAD_TRAP(0x67) BAD_TRAP(0x68) BAD_TRAP(0x69)
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t_bad6a:BAD_TRAP(0x6a) BAD_TRAP(0x6b) BAD_TRAP(0x6c) BAD_TRAP(0x6d) BAD_TRAP(0x6e)
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t_bad6f:BAD_TRAP(0x6f) BAD_TRAP(0x70) BAD_TRAP(0x71) BAD_TRAP(0x72) BAD_TRAP(0x73)
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t_bad74:BAD_TRAP(0x74) BAD_TRAP(0x75) BAD_TRAP(0x76) BAD_TRAP(0x77) BAD_TRAP(0x78)
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t_bad79:BAD_TRAP(0x79) BAD_TRAP(0x7a) BAD_TRAP(0x7b) BAD_TRAP(0x7c) BAD_TRAP(0x7d)
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t_bad7e:BAD_TRAP(0x7e) BAD_TRAP(0x7f)
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t_bad80:BAD_TRAP(0x80) /* SunOS System Call */
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t_sbkpt:BREAKPOINT_TRAP /* Software Breakpoint/KGDB */
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t_divz: TRAP_ENTRY(0x82, do_hw_divzero) /* Divide by zero trap */
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t_flwin:TRAP_ENTRY(0x83, do_flush_windows) /* Flush Windows Trap */
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t_clwin:BAD_TRAP(0x84) /* Clean Windows Trap */
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t_rchk: BAD_TRAP(0x85) /* Range Check */
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t_funal:BAD_TRAP(0x86) /* Fix Unaligned Access Trap */
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t_iovf: BAD_TRAP(0x87) /* Integer Overflow Trap */
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t_bad88:BAD_TRAP(0x88) /* Slowaris System Call */
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t_bad89:BAD_TRAP(0x89) /* Net-B.S. System Call */
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t_bad8a:BAD_TRAP(0x8a) BAD_TRAP(0x8b) BAD_TRAP(0x8c) BAD_TRAP(0x8d) BAD_TRAP(0x8e)
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t_bad8f:BAD_TRAP(0x8f)
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t_linux:LINUX_SYSCALL_TRAP /* Linux System Call */
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t_bad91:BAD_TRAP(0x91) BAD_TRAP(0x92) BAD_TRAP(0x93) BAD_TRAP(0x94) BAD_TRAP(0x95)
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t_bad96:BAD_TRAP(0x96) BAD_TRAP(0x97) BAD_TRAP(0x98) BAD_TRAP(0x99) BAD_TRAP(0x9a)
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t_bad9b:BAD_TRAP(0x9b) BAD_TRAP(0x9c) BAD_TRAP(0x9d) BAD_TRAP(0x9e) BAD_TRAP(0x9f)
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t_getcc:GETCC_TRAP /* Get Condition Codes */
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t_setcc:SETCC_TRAP /* Set Condition Codes */
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t_getpsr:GETPSR_TRAP /* Get PSR Register */
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t_bada3:BAD_TRAP(0xa3) BAD_TRAP(0xa4) BAD_TRAP(0xa5) BAD_TRAP(0xa6)
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t_bada7:BAD_TRAP(0xa7)
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t_bada8:BAD_TRAP(0xa8) BAD_TRAP(0xa9) BAD_TRAP(0xaa) BAD_TRAP(0xab)
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t_badac:BAD_TRAP(0xac) BAD_TRAP(0xad) BAD_TRAP(0xae) BAD_TRAP(0xaf) BAD_TRAP(0xb0)
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t_badb1:BAD_TRAP(0xb1) BAD_TRAP(0xb2) BAD_TRAP(0xb3) BAD_TRAP(0xb4) BAD_TRAP(0xb5)
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t_badb6:BAD_TRAP(0xb6) BAD_TRAP(0xb7) BAD_TRAP(0xb8) BAD_TRAP(0xb9) BAD_TRAP(0xba)
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t_badbb:BAD_TRAP(0xbb) BAD_TRAP(0xbc) BAD_TRAP(0xbd) BAD_TRAP(0xbe) BAD_TRAP(0xbf)
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t_badc0:BAD_TRAP(0xc0) BAD_TRAP(0xc1) BAD_TRAP(0xc2) BAD_TRAP(0xc3) BAD_TRAP(0xc4)
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t_badc5:BAD_TRAP(0xc5) BAD_TRAP(0xc6) BAD_TRAP(0xc7) BAD_TRAP(0xc8) BAD_TRAP(0xc9)
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t_badca:BAD_TRAP(0xca) BAD_TRAP(0xcb) BAD_TRAP(0xcc) BAD_TRAP(0xcd) BAD_TRAP(0xce)
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t_badcf:BAD_TRAP(0xcf) BAD_TRAP(0xd0) BAD_TRAP(0xd1) BAD_TRAP(0xd2) BAD_TRAP(0xd3)
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t_badd4:BAD_TRAP(0xd4) BAD_TRAP(0xd5) BAD_TRAP(0xd6) BAD_TRAP(0xd7) BAD_TRAP(0xd8)
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t_badd9:BAD_TRAP(0xd9) BAD_TRAP(0xda) BAD_TRAP(0xdb) BAD_TRAP(0xdc) BAD_TRAP(0xdd)
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t_badde:BAD_TRAP(0xde) BAD_TRAP(0xdf) BAD_TRAP(0xe0) BAD_TRAP(0xe1) BAD_TRAP(0xe2)
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t_bade3:BAD_TRAP(0xe3) BAD_TRAP(0xe4) BAD_TRAP(0xe5) BAD_TRAP(0xe6) BAD_TRAP(0xe7)
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t_bade8:BAD_TRAP(0xe8) BAD_TRAP(0xe9) BAD_TRAP(0xea) BAD_TRAP(0xeb) BAD_TRAP(0xec)
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t_baded:BAD_TRAP(0xed) BAD_TRAP(0xee) BAD_TRAP(0xef) BAD_TRAP(0xf0) BAD_TRAP(0xf1)
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t_badf2:BAD_TRAP(0xf2) BAD_TRAP(0xf3) BAD_TRAP(0xf4) BAD_TRAP(0xf5) BAD_TRAP(0xf6)
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t_badf7:BAD_TRAP(0xf7) BAD_TRAP(0xf8) BAD_TRAP(0xf9) BAD_TRAP(0xfa) BAD_TRAP(0xfb)
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t_badfc:BAD_TRAP(0xfc)
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t_kgdb: KGDB_TRAP(0xfd)
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dbtrap: BAD_TRAP(0xfe) /* Debugger/PROM breakpoint #1 */
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dbtrap2:BAD_TRAP(0xff) /* Debugger/PROM breakpoint #2 */
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.globl end_traptable
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end_traptable:
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#ifdef CONFIG_SMP
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/* Trap tables for the other cpus. */
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.globl trapbase_cpu1, trapbase_cpu2, trapbase_cpu3
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trapbase_cpu1:
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BAD_TRAP(0x0) SRMMU_TFAULT TRAP_ENTRY(0x2, bad_instruction)
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TRAP_ENTRY(0x3, priv_instruction) TRAP_ENTRY(0x4, fpd_trap_handler)
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WINDOW_SPILL WINDOW_FILL TRAP_ENTRY(0x7, mna_handler)
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TRAP_ENTRY(0x8, fpe_trap_handler) SRMMU_DFAULT
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TRAP_ENTRY(0xa, do_tag_overflow) TRAP_ENTRY(0xb, do_watchpoint)
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BAD_TRAP(0xc) BAD_TRAP(0xd) BAD_TRAP(0xe) BAD_TRAP(0xf) BAD_TRAP(0x10)
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TRAP_ENTRY_INTERRUPT(1) TRAP_ENTRY_INTERRUPT(2)
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TRAP_ENTRY_INTERRUPT(3) TRAP_ENTRY_INTERRUPT(4)
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TRAP_ENTRY_INTERRUPT(5) TRAP_ENTRY_INTERRUPT(6)
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TRAP_ENTRY_INTERRUPT(7) TRAP_ENTRY_INTERRUPT(8)
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TRAP_ENTRY_INTERRUPT(9) TRAP_ENTRY_INTERRUPT(10)
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TRAP_ENTRY_INTERRUPT(11) TRAP_ENTRY_INTERRUPT(12)
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TRAP_ENTRY_INTERRUPT(13) TRAP_ENTRY_INTERRUPT(14)
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TRAP_ENTRY(0x1f, linux_trap_ipi15_sun4m)
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TRAP_ENTRY(0x20, do_reg_access) BAD_TRAP(0x21) BAD_TRAP(0x22)
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BAD_TRAP(0x23) TRAP_ENTRY(0x24, do_cp_disabled) SKIP_TRAP(0x25, unimp_flush)
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BAD_TRAP(0x26) BAD_TRAP(0x27) TRAP_ENTRY(0x28, do_cp_exception)
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SRMMU_DFAULT TRAP_ENTRY(0x2a, do_hw_divzero) BAD_TRAP(0x2b) BAD_TRAP(0x2c)
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BAD_TRAP(0x2d) BAD_TRAP(0x2e) BAD_TRAP(0x2f) BAD_TRAP(0x30) BAD_TRAP(0x31)
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BAD_TRAP(0x32) BAD_TRAP(0x33) BAD_TRAP(0x34) BAD_TRAP(0x35) BAD_TRAP(0x36)
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BAD_TRAP(0x37) BAD_TRAP(0x38) BAD_TRAP(0x39) BAD_TRAP(0x3a) BAD_TRAP(0x3b)
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BAD_TRAP(0x3c) BAD_TRAP(0x3d) BAD_TRAP(0x3e) BAD_TRAP(0x3f) BAD_TRAP(0x40)
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BAD_TRAP(0x41) BAD_TRAP(0x42) BAD_TRAP(0x43) BAD_TRAP(0x44) BAD_TRAP(0x45)
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BAD_TRAP(0x46) BAD_TRAP(0x47) BAD_TRAP(0x48) BAD_TRAP(0x49) BAD_TRAP(0x4a)
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BAD_TRAP(0x4b) BAD_TRAP(0x4c) BAD_TRAP(0x4d) BAD_TRAP(0x4e) BAD_TRAP(0x4f)
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BAD_TRAP(0x50)
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BAD_TRAP(0x51) BAD_TRAP(0x52) BAD_TRAP(0x53) BAD_TRAP(0x54) BAD_TRAP(0x55)
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BAD_TRAP(0x56) BAD_TRAP(0x57) BAD_TRAP(0x58) BAD_TRAP(0x59) BAD_TRAP(0x5a)
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BAD_TRAP(0x5b) BAD_TRAP(0x5c) BAD_TRAP(0x5d) BAD_TRAP(0x5e) BAD_TRAP(0x5f)
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BAD_TRAP(0x60) BAD_TRAP(0x61) BAD_TRAP(0x62) BAD_TRAP(0x63) BAD_TRAP(0x64)
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BAD_TRAP(0x65) BAD_TRAP(0x66) BAD_TRAP(0x67) BAD_TRAP(0x68) BAD_TRAP(0x69)
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BAD_TRAP(0x6a) BAD_TRAP(0x6b) BAD_TRAP(0x6c) BAD_TRAP(0x6d) BAD_TRAP(0x6e)
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BAD_TRAP(0x6f) BAD_TRAP(0x70) BAD_TRAP(0x71) BAD_TRAP(0x72) BAD_TRAP(0x73)
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BAD_TRAP(0x74) BAD_TRAP(0x75) BAD_TRAP(0x76) BAD_TRAP(0x77) BAD_TRAP(0x78)
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BAD_TRAP(0x79) BAD_TRAP(0x7a) BAD_TRAP(0x7b) BAD_TRAP(0x7c) BAD_TRAP(0x7d)
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BAD_TRAP(0x7e) BAD_TRAP(0x7f)
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BAD_TRAP(0x80)
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BREAKPOINT_TRAP
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TRAP_ENTRY(0x82, do_hw_divzero)
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TRAP_ENTRY(0x83, do_flush_windows) BAD_TRAP(0x84) BAD_TRAP(0x85)
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BAD_TRAP(0x86) BAD_TRAP(0x87) BAD_TRAP(0x88)
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BAD_TRAP(0x89) BAD_TRAP(0x8a) BAD_TRAP(0x8b) BAD_TRAP(0x8c)
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BAD_TRAP(0x8d) BAD_TRAP(0x8e) BAD_TRAP(0x8f)
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LINUX_SYSCALL_TRAP BAD_TRAP(0x91) BAD_TRAP(0x92) BAD_TRAP(0x93) BAD_TRAP(0x94)
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BAD_TRAP(0x95) BAD_TRAP(0x96) BAD_TRAP(0x97) BAD_TRAP(0x98) BAD_TRAP(0x99)
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BAD_TRAP(0x9a) BAD_TRAP(0x9b) BAD_TRAP(0x9c) BAD_TRAP(0x9d) BAD_TRAP(0x9e)
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BAD_TRAP(0x9f) GETCC_TRAP SETCC_TRAP GETPSR_TRAP
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BAD_TRAP(0xa3) BAD_TRAP(0xa4) BAD_TRAP(0xa5) BAD_TRAP(0xa6)
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BAD_TRAP(0xa7) BAD_TRAP(0xa8) BAD_TRAP(0xa9) BAD_TRAP(0xaa) BAD_TRAP(0xab)
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BAD_TRAP(0xac) BAD_TRAP(0xad) BAD_TRAP(0xae) BAD_TRAP(0xaf) BAD_TRAP(0xb0)
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BAD_TRAP(0xb1) BAD_TRAP(0xb2) BAD_TRAP(0xb3) BAD_TRAP(0xb4) BAD_TRAP(0xb5)
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|
BAD_TRAP(0xb6) BAD_TRAP(0xb7) BAD_TRAP(0xb8) BAD_TRAP(0xb9) BAD_TRAP(0xba)
|
|
BAD_TRAP(0xbb) BAD_TRAP(0xbc) BAD_TRAP(0xbd) BAD_TRAP(0xbe) BAD_TRAP(0xbf)
|
|
BAD_TRAP(0xc0) BAD_TRAP(0xc1) BAD_TRAP(0xc2) BAD_TRAP(0xc3) BAD_TRAP(0xc4)
|
|
BAD_TRAP(0xc5) BAD_TRAP(0xc6) BAD_TRAP(0xc7) BAD_TRAP(0xc8) BAD_TRAP(0xc9)
|
|
BAD_TRAP(0xca) BAD_TRAP(0xcb) BAD_TRAP(0xcc) BAD_TRAP(0xcd) BAD_TRAP(0xce)
|
|
BAD_TRAP(0xcf) BAD_TRAP(0xd0) BAD_TRAP(0xd1) BAD_TRAP(0xd2) BAD_TRAP(0xd3)
|
|
BAD_TRAP(0xd4) BAD_TRAP(0xd5) BAD_TRAP(0xd6) BAD_TRAP(0xd7) BAD_TRAP(0xd8)
|
|
BAD_TRAP(0xd9) BAD_TRAP(0xda) BAD_TRAP(0xdb) BAD_TRAP(0xdc) BAD_TRAP(0xdd)
|
|
BAD_TRAP(0xde) BAD_TRAP(0xdf) BAD_TRAP(0xe0) BAD_TRAP(0xe1) BAD_TRAP(0xe2)
|
|
BAD_TRAP(0xe3) BAD_TRAP(0xe4) BAD_TRAP(0xe5) BAD_TRAP(0xe6) BAD_TRAP(0xe7)
|
|
BAD_TRAP(0xe8) BAD_TRAP(0xe9) BAD_TRAP(0xea) BAD_TRAP(0xeb) BAD_TRAP(0xec)
|
|
BAD_TRAP(0xed) BAD_TRAP(0xee) BAD_TRAP(0xef) BAD_TRAP(0xf0) BAD_TRAP(0xf1)
|
|
BAD_TRAP(0xf2) BAD_TRAP(0xf3) BAD_TRAP(0xf4) BAD_TRAP(0xf5) BAD_TRAP(0xf6)
|
|
BAD_TRAP(0xf7) BAD_TRAP(0xf8) BAD_TRAP(0xf9) BAD_TRAP(0xfa) BAD_TRAP(0xfb)
|
|
BAD_TRAP(0xfc) KGDB_TRAP(0xfd) BAD_TRAP(0xfe) BAD_TRAP(0xff)
|
|
|
|
trapbase_cpu2:
|
|
BAD_TRAP(0x0) SRMMU_TFAULT TRAP_ENTRY(0x2, bad_instruction)
|
|
TRAP_ENTRY(0x3, priv_instruction) TRAP_ENTRY(0x4, fpd_trap_handler)
|
|
WINDOW_SPILL WINDOW_FILL TRAP_ENTRY(0x7, mna_handler)
|
|
TRAP_ENTRY(0x8, fpe_trap_handler) SRMMU_DFAULT
|
|
TRAP_ENTRY(0xa, do_tag_overflow) TRAP_ENTRY(0xb, do_watchpoint)
|
|
BAD_TRAP(0xc) BAD_TRAP(0xd) BAD_TRAP(0xe) BAD_TRAP(0xf) BAD_TRAP(0x10)
|
|
TRAP_ENTRY_INTERRUPT(1) TRAP_ENTRY_INTERRUPT(2)
|
|
TRAP_ENTRY_INTERRUPT(3) TRAP_ENTRY_INTERRUPT(4)
|
|
TRAP_ENTRY_INTERRUPT(5) TRAP_ENTRY_INTERRUPT(6)
|
|
TRAP_ENTRY_INTERRUPT(7) TRAP_ENTRY_INTERRUPT(8)
|
|
TRAP_ENTRY_INTERRUPT(9) TRAP_ENTRY_INTERRUPT(10)
|
|
TRAP_ENTRY_INTERRUPT(11) TRAP_ENTRY_INTERRUPT(12)
|
|
TRAP_ENTRY_INTERRUPT(13) TRAP_ENTRY_INTERRUPT(14)
|
|
TRAP_ENTRY(0x1f, linux_trap_ipi15_sun4m)
|
|
TRAP_ENTRY(0x20, do_reg_access) BAD_TRAP(0x21) BAD_TRAP(0x22)
|
|
BAD_TRAP(0x23) TRAP_ENTRY(0x24, do_cp_disabled) SKIP_TRAP(0x25, unimp_flush)
|
|
BAD_TRAP(0x26) BAD_TRAP(0x27) TRAP_ENTRY(0x28, do_cp_exception)
|
|
SRMMU_DFAULT TRAP_ENTRY(0x2a, do_hw_divzero) BAD_TRAP(0x2b) BAD_TRAP(0x2c)
|
|
BAD_TRAP(0x2d) BAD_TRAP(0x2e) BAD_TRAP(0x2f) BAD_TRAP(0x30) BAD_TRAP(0x31)
|
|
BAD_TRAP(0x32) BAD_TRAP(0x33) BAD_TRAP(0x34) BAD_TRAP(0x35) BAD_TRAP(0x36)
|
|
BAD_TRAP(0x37) BAD_TRAP(0x38) BAD_TRAP(0x39) BAD_TRAP(0x3a) BAD_TRAP(0x3b)
|
|
BAD_TRAP(0x3c) BAD_TRAP(0x3d) BAD_TRAP(0x3e) BAD_TRAP(0x3f) BAD_TRAP(0x40)
|
|
BAD_TRAP(0x41) BAD_TRAP(0x42) BAD_TRAP(0x43) BAD_TRAP(0x44) BAD_TRAP(0x45)
|
|
BAD_TRAP(0x46) BAD_TRAP(0x47) BAD_TRAP(0x48) BAD_TRAP(0x49) BAD_TRAP(0x4a)
|
|
BAD_TRAP(0x4b) BAD_TRAP(0x4c) BAD_TRAP(0x4d) BAD_TRAP(0x4e) BAD_TRAP(0x4f)
|
|
BAD_TRAP(0x50)
|
|
BAD_TRAP(0x51) BAD_TRAP(0x52) BAD_TRAP(0x53) BAD_TRAP(0x54) BAD_TRAP(0x55)
|
|
BAD_TRAP(0x56) BAD_TRAP(0x57) BAD_TRAP(0x58) BAD_TRAP(0x59) BAD_TRAP(0x5a)
|
|
BAD_TRAP(0x5b) BAD_TRAP(0x5c) BAD_TRAP(0x5d) BAD_TRAP(0x5e) BAD_TRAP(0x5f)
|
|
BAD_TRAP(0x60) BAD_TRAP(0x61) BAD_TRAP(0x62) BAD_TRAP(0x63) BAD_TRAP(0x64)
|
|
BAD_TRAP(0x65) BAD_TRAP(0x66) BAD_TRAP(0x67) BAD_TRAP(0x68) BAD_TRAP(0x69)
|
|
BAD_TRAP(0x6a) BAD_TRAP(0x6b) BAD_TRAP(0x6c) BAD_TRAP(0x6d) BAD_TRAP(0x6e)
|
|
BAD_TRAP(0x6f) BAD_TRAP(0x70) BAD_TRAP(0x71) BAD_TRAP(0x72) BAD_TRAP(0x73)
|
|
BAD_TRAP(0x74) BAD_TRAP(0x75) BAD_TRAP(0x76) BAD_TRAP(0x77) BAD_TRAP(0x78)
|
|
BAD_TRAP(0x79) BAD_TRAP(0x7a) BAD_TRAP(0x7b) BAD_TRAP(0x7c) BAD_TRAP(0x7d)
|
|
BAD_TRAP(0x7e) BAD_TRAP(0x7f)
|
|
BAD_TRAP(0x80)
|
|
BREAKPOINT_TRAP
|
|
TRAP_ENTRY(0x82, do_hw_divzero)
|
|
TRAP_ENTRY(0x83, do_flush_windows) BAD_TRAP(0x84) BAD_TRAP(0x85)
|
|
BAD_TRAP(0x86) BAD_TRAP(0x87) BAD_TRAP(0x88)
|
|
BAD_TRAP(0x89) BAD_TRAP(0x8a) BAD_TRAP(0x8b) BAD_TRAP(0x8c)
|
|
BAD_TRAP(0x8d) BAD_TRAP(0x8e) BAD_TRAP(0x8f)
|
|
LINUX_SYSCALL_TRAP BAD_TRAP(0x91) BAD_TRAP(0x92) BAD_TRAP(0x93) BAD_TRAP(0x94)
|
|
BAD_TRAP(0x95) BAD_TRAP(0x96) BAD_TRAP(0x97) BAD_TRAP(0x98) BAD_TRAP(0x99)
|
|
BAD_TRAP(0x9a) BAD_TRAP(0x9b) BAD_TRAP(0x9c) BAD_TRAP(0x9d) BAD_TRAP(0x9e)
|
|
BAD_TRAP(0x9f) GETCC_TRAP SETCC_TRAP GETPSR_TRAP
|
|
BAD_TRAP(0xa3) BAD_TRAP(0xa4) BAD_TRAP(0xa5) BAD_TRAP(0xa6)
|
|
BAD_TRAP(0xa7) BAD_TRAP(0xa8) BAD_TRAP(0xa9) BAD_TRAP(0xaa) BAD_TRAP(0xab)
|
|
BAD_TRAP(0xac) BAD_TRAP(0xad) BAD_TRAP(0xae) BAD_TRAP(0xaf) BAD_TRAP(0xb0)
|
|
BAD_TRAP(0xb1) BAD_TRAP(0xb2) BAD_TRAP(0xb3) BAD_TRAP(0xb4) BAD_TRAP(0xb5)
|
|
BAD_TRAP(0xb6) BAD_TRAP(0xb7) BAD_TRAP(0xb8) BAD_TRAP(0xb9) BAD_TRAP(0xba)
|
|
BAD_TRAP(0xbb) BAD_TRAP(0xbc) BAD_TRAP(0xbd) BAD_TRAP(0xbe) BAD_TRAP(0xbf)
|
|
BAD_TRAP(0xc0) BAD_TRAP(0xc1) BAD_TRAP(0xc2) BAD_TRAP(0xc3) BAD_TRAP(0xc4)
|
|
BAD_TRAP(0xc5) BAD_TRAP(0xc6) BAD_TRAP(0xc7) BAD_TRAP(0xc8) BAD_TRAP(0xc9)
|
|
BAD_TRAP(0xca) BAD_TRAP(0xcb) BAD_TRAP(0xcc) BAD_TRAP(0xcd) BAD_TRAP(0xce)
|
|
BAD_TRAP(0xcf) BAD_TRAP(0xd0) BAD_TRAP(0xd1) BAD_TRAP(0xd2) BAD_TRAP(0xd3)
|
|
BAD_TRAP(0xd4) BAD_TRAP(0xd5) BAD_TRAP(0xd6) BAD_TRAP(0xd7) BAD_TRAP(0xd8)
|
|
BAD_TRAP(0xd9) BAD_TRAP(0xda) BAD_TRAP(0xdb) BAD_TRAP(0xdc) BAD_TRAP(0xdd)
|
|
BAD_TRAP(0xde) BAD_TRAP(0xdf) BAD_TRAP(0xe0) BAD_TRAP(0xe1) BAD_TRAP(0xe2)
|
|
BAD_TRAP(0xe3) BAD_TRAP(0xe4) BAD_TRAP(0xe5) BAD_TRAP(0xe6) BAD_TRAP(0xe7)
|
|
BAD_TRAP(0xe8) BAD_TRAP(0xe9) BAD_TRAP(0xea) BAD_TRAP(0xeb) BAD_TRAP(0xec)
|
|
BAD_TRAP(0xed) BAD_TRAP(0xee) BAD_TRAP(0xef) BAD_TRAP(0xf0) BAD_TRAP(0xf1)
|
|
BAD_TRAP(0xf2) BAD_TRAP(0xf3) BAD_TRAP(0xf4) BAD_TRAP(0xf5) BAD_TRAP(0xf6)
|
|
BAD_TRAP(0xf7) BAD_TRAP(0xf8) BAD_TRAP(0xf9) BAD_TRAP(0xfa) BAD_TRAP(0xfb)
|
|
BAD_TRAP(0xfc) KGDB_TRAP(0xfd) BAD_TRAP(0xfe) BAD_TRAP(0xff)
|
|
|
|
trapbase_cpu3:
|
|
BAD_TRAP(0x0) SRMMU_TFAULT TRAP_ENTRY(0x2, bad_instruction)
|
|
TRAP_ENTRY(0x3, priv_instruction) TRAP_ENTRY(0x4, fpd_trap_handler)
|
|
WINDOW_SPILL WINDOW_FILL TRAP_ENTRY(0x7, mna_handler)
|
|
TRAP_ENTRY(0x8, fpe_trap_handler) SRMMU_DFAULT
|
|
TRAP_ENTRY(0xa, do_tag_overflow) TRAP_ENTRY(0xb, do_watchpoint)
|
|
BAD_TRAP(0xc) BAD_TRAP(0xd) BAD_TRAP(0xe) BAD_TRAP(0xf) BAD_TRAP(0x10)
|
|
TRAP_ENTRY_INTERRUPT(1) TRAP_ENTRY_INTERRUPT(2)
|
|
TRAP_ENTRY_INTERRUPT(3) TRAP_ENTRY_INTERRUPT(4)
|
|
TRAP_ENTRY_INTERRUPT(5) TRAP_ENTRY_INTERRUPT(6)
|
|
TRAP_ENTRY_INTERRUPT(7) TRAP_ENTRY_INTERRUPT(8)
|
|
TRAP_ENTRY_INTERRUPT(9) TRAP_ENTRY_INTERRUPT(10)
|
|
TRAP_ENTRY_INTERRUPT(11) TRAP_ENTRY_INTERRUPT(12)
|
|
TRAP_ENTRY_INTERRUPT(13) TRAP_ENTRY_INTERRUPT(14)
|
|
TRAP_ENTRY(0x1f, linux_trap_ipi15_sun4m)
|
|
TRAP_ENTRY(0x20, do_reg_access) BAD_TRAP(0x21) BAD_TRAP(0x22)
|
|
BAD_TRAP(0x23) TRAP_ENTRY(0x24, do_cp_disabled) SKIP_TRAP(0x25, unimp_flush)
|
|
BAD_TRAP(0x26) BAD_TRAP(0x27) TRAP_ENTRY(0x28, do_cp_exception)
|
|
SRMMU_DFAULT TRAP_ENTRY(0x2a, do_hw_divzero) BAD_TRAP(0x2b) BAD_TRAP(0x2c)
|
|
BAD_TRAP(0x2d) BAD_TRAP(0x2e) BAD_TRAP(0x2f) BAD_TRAP(0x30) BAD_TRAP(0x31)
|
|
BAD_TRAP(0x32) BAD_TRAP(0x33) BAD_TRAP(0x34) BAD_TRAP(0x35) BAD_TRAP(0x36)
|
|
BAD_TRAP(0x37) BAD_TRAP(0x38) BAD_TRAP(0x39) BAD_TRAP(0x3a) BAD_TRAP(0x3b)
|
|
BAD_TRAP(0x3c) BAD_TRAP(0x3d) BAD_TRAP(0x3e) BAD_TRAP(0x3f) BAD_TRAP(0x40)
|
|
BAD_TRAP(0x41) BAD_TRAP(0x42) BAD_TRAP(0x43) BAD_TRAP(0x44) BAD_TRAP(0x45)
|
|
BAD_TRAP(0x46) BAD_TRAP(0x47) BAD_TRAP(0x48) BAD_TRAP(0x49) BAD_TRAP(0x4a)
|
|
BAD_TRAP(0x4b) BAD_TRAP(0x4c) BAD_TRAP(0x4d) BAD_TRAP(0x4e) BAD_TRAP(0x4f)
|
|
BAD_TRAP(0x50)
|
|
BAD_TRAP(0x51) BAD_TRAP(0x52) BAD_TRAP(0x53) BAD_TRAP(0x54) BAD_TRAP(0x55)
|
|
BAD_TRAP(0x56) BAD_TRAP(0x57) BAD_TRAP(0x58) BAD_TRAP(0x59) BAD_TRAP(0x5a)
|
|
BAD_TRAP(0x5b) BAD_TRAP(0x5c) BAD_TRAP(0x5d) BAD_TRAP(0x5e) BAD_TRAP(0x5f)
|
|
BAD_TRAP(0x60) BAD_TRAP(0x61) BAD_TRAP(0x62) BAD_TRAP(0x63) BAD_TRAP(0x64)
|
|
BAD_TRAP(0x65) BAD_TRAP(0x66) BAD_TRAP(0x67) BAD_TRAP(0x68) BAD_TRAP(0x69)
|
|
BAD_TRAP(0x6a) BAD_TRAP(0x6b) BAD_TRAP(0x6c) BAD_TRAP(0x6d) BAD_TRAP(0x6e)
|
|
BAD_TRAP(0x6f) BAD_TRAP(0x70) BAD_TRAP(0x71) BAD_TRAP(0x72) BAD_TRAP(0x73)
|
|
BAD_TRAP(0x74) BAD_TRAP(0x75) BAD_TRAP(0x76) BAD_TRAP(0x77) BAD_TRAP(0x78)
|
|
BAD_TRAP(0x79) BAD_TRAP(0x7a) BAD_TRAP(0x7b) BAD_TRAP(0x7c) BAD_TRAP(0x7d)
|
|
BAD_TRAP(0x7e) BAD_TRAP(0x7f)
|
|
BAD_TRAP(0x80)
|
|
BREAKPOINT_TRAP
|
|
TRAP_ENTRY(0x82, do_hw_divzero)
|
|
TRAP_ENTRY(0x83, do_flush_windows) BAD_TRAP(0x84) BAD_TRAP(0x85)
|
|
BAD_TRAP(0x86) BAD_TRAP(0x87) BAD_TRAP(0x88)
|
|
BAD_TRAP(0x89) BAD_TRAP(0x8a) BAD_TRAP(0x8b) BAD_TRAP(0x8c)
|
|
BAD_TRAP(0x8d) BAD_TRAP(0x8e) BAD_TRAP(0x8f)
|
|
LINUX_SYSCALL_TRAP BAD_TRAP(0x91) BAD_TRAP(0x92) BAD_TRAP(0x93) BAD_TRAP(0x94)
|
|
BAD_TRAP(0x95) BAD_TRAP(0x96) BAD_TRAP(0x97) BAD_TRAP(0x98) BAD_TRAP(0x99)
|
|
BAD_TRAP(0x9a) BAD_TRAP(0x9b) BAD_TRAP(0x9c) BAD_TRAP(0x9d) BAD_TRAP(0x9e)
|
|
BAD_TRAP(0x9f) GETCC_TRAP SETCC_TRAP GETPSR_TRAP
|
|
BAD_TRAP(0xa3) BAD_TRAP(0xa4) BAD_TRAP(0xa5) BAD_TRAP(0xa6)
|
|
BAD_TRAP(0xa7) BAD_TRAP(0xa8) BAD_TRAP(0xa9) BAD_TRAP(0xaa) BAD_TRAP(0xab)
|
|
BAD_TRAP(0xac) BAD_TRAP(0xad) BAD_TRAP(0xae) BAD_TRAP(0xaf) BAD_TRAP(0xb0)
|
|
BAD_TRAP(0xb1) BAD_TRAP(0xb2) BAD_TRAP(0xb3) BAD_TRAP(0xb4) BAD_TRAP(0xb5)
|
|
BAD_TRAP(0xb6) BAD_TRAP(0xb7) BAD_TRAP(0xb8) BAD_TRAP(0xb9) BAD_TRAP(0xba)
|
|
BAD_TRAP(0xbb) BAD_TRAP(0xbc) BAD_TRAP(0xbd) BAD_TRAP(0xbe) BAD_TRAP(0xbf)
|
|
BAD_TRAP(0xc0) BAD_TRAP(0xc1) BAD_TRAP(0xc2) BAD_TRAP(0xc3) BAD_TRAP(0xc4)
|
|
BAD_TRAP(0xc5) BAD_TRAP(0xc6) BAD_TRAP(0xc7) BAD_TRAP(0xc8) BAD_TRAP(0xc9)
|
|
BAD_TRAP(0xca) BAD_TRAP(0xcb) BAD_TRAP(0xcc) BAD_TRAP(0xcd) BAD_TRAP(0xce)
|
|
BAD_TRAP(0xcf) BAD_TRAP(0xd0) BAD_TRAP(0xd1) BAD_TRAP(0xd2) BAD_TRAP(0xd3)
|
|
BAD_TRAP(0xd4) BAD_TRAP(0xd5) BAD_TRAP(0xd6) BAD_TRAP(0xd7) BAD_TRAP(0xd8)
|
|
BAD_TRAP(0xd9) BAD_TRAP(0xda) BAD_TRAP(0xdb) BAD_TRAP(0xdc) BAD_TRAP(0xdd)
|
|
BAD_TRAP(0xde) BAD_TRAP(0xdf) BAD_TRAP(0xe0) BAD_TRAP(0xe1) BAD_TRAP(0xe2)
|
|
BAD_TRAP(0xe3) BAD_TRAP(0xe4) BAD_TRAP(0xe5) BAD_TRAP(0xe6) BAD_TRAP(0xe7)
|
|
BAD_TRAP(0xe8) BAD_TRAP(0xe9) BAD_TRAP(0xea) BAD_TRAP(0xeb) BAD_TRAP(0xec)
|
|
BAD_TRAP(0xed) BAD_TRAP(0xee) BAD_TRAP(0xef) BAD_TRAP(0xf0) BAD_TRAP(0xf1)
|
|
BAD_TRAP(0xf2) BAD_TRAP(0xf3) BAD_TRAP(0xf4) BAD_TRAP(0xf5) BAD_TRAP(0xf6)
|
|
BAD_TRAP(0xf7) BAD_TRAP(0xf8) BAD_TRAP(0xf9) BAD_TRAP(0xfa) BAD_TRAP(0xfb)
|
|
BAD_TRAP(0xfc) KGDB_TRAP(0xfd) BAD_TRAP(0xfe) BAD_TRAP(0xff)
|
|
|
|
#endif
|
|
.align PAGE_SIZE
|
|
|
|
/* This was the only reasonable way I could think of to properly align
|
|
* these page-table data structures.
|
|
*/
|
|
.globl pg0, pg1, pg2, pg3
|
|
.globl empty_bad_page
|
|
.globl empty_bad_page_table
|
|
.globl empty_zero_page
|
|
.globl swapper_pg_dir
|
|
swapper_pg_dir: .skip PAGE_SIZE
|
|
pg0: .skip PAGE_SIZE
|
|
pg1: .skip PAGE_SIZE
|
|
pg2: .skip PAGE_SIZE
|
|
pg3: .skip PAGE_SIZE
|
|
empty_bad_page: .skip PAGE_SIZE
|
|
empty_bad_page_table: .skip PAGE_SIZE
|
|
empty_zero_page: .skip PAGE_SIZE
|
|
|
|
.global root_flags
|
|
.global ram_flags
|
|
.global root_dev
|
|
.global sparc_ramdisk_image
|
|
.global sparc_ramdisk_size
|
|
|
|
/* This stuff has to be in sync with SILO and other potential boot loaders
|
|
* Fields should be kept upward compatible and whenever any change is made,
|
|
* HdrS version should be incremented.
|
|
*/
|
|
.ascii "HdrS"
|
|
.word LINUX_VERSION_CODE
|
|
.half 0x0203 /* HdrS version */
|
|
root_flags:
|
|
.half 1
|
|
root_dev:
|
|
.half 0
|
|
ram_flags:
|
|
.half 0
|
|
sparc_ramdisk_image:
|
|
.word 0
|
|
sparc_ramdisk_size:
|
|
.word 0
|
|
.word reboot_command
|
|
.word 0, 0, 0
|
|
.word _end
|
|
|
|
/* Cool, here we go. Pick up the romvec pointer in %o0 and stash it in
|
|
* %g7 and at prom_vector_p. And also quickly check whether we are on
|
|
* a v0, v2, or v3 prom.
|
|
*/
|
|
gokernel:
|
|
/* Ok, it's nice to know, as early as possible, if we
|
|
* are already mapped where we expect to be in virtual
|
|
* memory. The Solaris /boot elf format bootloader
|
|
* will peek into our elf header and load us where
|
|
* we want to be, otherwise we have to re-map.
|
|
*
|
|
* Some boot loaders don't place the jmp'rs address
|
|
* in %o7, so we do a pc-relative call to a local
|
|
* label, then see what %o7 has.
|
|
*/
|
|
|
|
mov %o7, %g4 ! Save %o7
|
|
|
|
/* Jump to it, and pray... */
|
|
current_pc:
|
|
call 1f
|
|
nop
|
|
|
|
1:
|
|
mov %o7, %g3
|
|
|
|
tst %o0
|
|
be no_sun4u_here
|
|
mov %g4, %o7 /* Previous %o7. */
|
|
|
|
mov %o0, %l0 ! stash away romvec
|
|
mov %o0, %g7 ! put it here too
|
|
mov %o1, %l1 ! stash away debug_vec too
|
|
|
|
/* Ok, let's check out our run time program counter. */
|
|
set current_pc, %g5
|
|
cmp %g3, %g5
|
|
be already_mapped
|
|
nop
|
|
|
|
/* %l6 will hold the offset we have to subtract
|
|
* from absolute symbols in order to access areas
|
|
* in our own image. If already mapped this is
|
|
* just plain zero, else it is KERNBASE.
|
|
*/
|
|
set KERNBASE, %l6
|
|
b copy_prom_lvl14
|
|
nop
|
|
|
|
already_mapped:
|
|
mov 0, %l6
|
|
|
|
/* Copy over the Prom's level 14 clock handler. */
|
|
copy_prom_lvl14:
|
|
#if 1
|
|
/* DJHR
|
|
* preserve our linked/calculated instructions
|
|
*/
|
|
set lvl14_save, %g1
|
|
set t_irq14, %g3
|
|
sub %g1, %l6, %g1 ! translate to physical
|
|
sub %g3, %l6, %g3 ! translate to physical
|
|
ldd [%g3], %g4
|
|
std %g4, [%g1]
|
|
ldd [%g3+8], %g4
|
|
std %g4, [%g1+8]
|
|
#endif
|
|
rd %tbr, %g1
|
|
andn %g1, 0xfff, %g1 ! proms trap table base
|
|
or %g0, (0x1e<<4), %g2 ! offset to lvl14 intr
|
|
or %g1, %g2, %g2
|
|
set t_irq14, %g3
|
|
sub %g3, %l6, %g3
|
|
ldd [%g2], %g4
|
|
std %g4, [%g3]
|
|
ldd [%g2 + 0x8], %g4
|
|
std %g4, [%g3 + 0x8] ! Copy proms handler
|
|
|
|
/* Must determine whether we are on a sun4c MMU, SRMMU, or SUN4/400 MUTANT
|
|
* MMU so we can remap ourselves properly. DON'T TOUCH %l0 thru %l5 in these
|
|
* remapping routines, we need their values afterwards!
|
|
*/
|
|
/* Now check whether we are already mapped, if we
|
|
* are we can skip all this garbage coming up.
|
|
*/
|
|
copy_prom_done:
|
|
cmp %l6, 0
|
|
be go_to_highmem ! this will be a nop then
|
|
nop
|
|
|
|
set LOAD_ADDR, %g6
|
|
cmp %g7, %g6
|
|
bne remap_not_a_sun4 ! This is not a Sun4
|
|
nop
|
|
|
|
or %g0, 0x1, %g1
|
|
lduba [%g1] ASI_CONTROL, %g1 ! Only safe to try on Sun4.
|
|
subcc %g1, 0x24, %g0 ! Is this a mutant Sun4/400???
|
|
be sun4_mutant_remap ! Ugh, it is...
|
|
nop
|
|
|
|
b sun4_normal_remap ! regular sun4, 2 level mmu
|
|
nop
|
|
|
|
remap_not_a_sun4:
|
|
lda [%g0] ASI_M_MMUREGS, %g1 ! same as ASI_PTE on sun4c
|
|
and %g1, 0x1, %g1 ! Test SRMMU Enable bit ;-)
|
|
cmp %g1, 0x0
|
|
be sun4c_remap ! A sun4c MMU or normal Sun4
|
|
nop
|
|
srmmu_remap:
|
|
/* First, check for a viking (TI) module. */
|
|
set 0x40000000, %g2
|
|
rd %psr, %g3
|
|
and %g2, %g3, %g3
|
|
subcc %g3, 0x0, %g0
|
|
bz srmmu_nviking
|
|
nop
|
|
|
|
/* Figure out what kind of viking we are on.
|
|
* We need to know if we have to play with the
|
|
* AC bit and disable traps or not.
|
|
*/
|
|
|
|
/* I've only seen MicroSparc's on SparcClassics with this
|
|
* bit set.
|
|
*/
|
|
set 0x800, %g2
|
|
lda [%g0] ASI_M_MMUREGS, %g3 ! peek in the control reg
|
|
and %g2, %g3, %g3
|
|
subcc %g3, 0x0, %g0
|
|
bnz srmmu_nviking ! is in mbus mode
|
|
nop
|
|
|
|
rd %psr, %g3 ! DO NOT TOUCH %g3
|
|
andn %g3, PSR_ET, %g2
|
|
wr %g2, 0x0, %psr
|
|
WRITE_PAUSE
|
|
|
|
/* Get context table pointer, then convert to
|
|
* a physical address, which is 36 bits.
|
|
*/
|
|
set AC_M_CTPR, %g4
|
|
lda [%g4] ASI_M_MMUREGS, %g4
|
|
sll %g4, 0x4, %g4 ! We use this below
|
|
! DO NOT TOUCH %g4
|
|
|
|
/* Set the AC bit in the Viking's MMU control reg. */
|
|
lda [%g0] ASI_M_MMUREGS, %g5 ! DO NOT TOUCH %g5
|
|
set 0x8000, %g6 ! AC bit mask
|
|
or %g5, %g6, %g6 ! Or it in...
|
|
sta %g6, [%g0] ASI_M_MMUREGS ! Close your eyes...
|
|
|
|
/* Grrr, why does it seem like every other load/store
|
|
* on the sun4m is in some ASI space...
|
|
* Fine with me, let's get the pointer to the level 1
|
|
* page table directory and fetch its entry.
|
|
*/
|
|
lda [%g4] ASI_M_BYPASS, %o1 ! This is a level 1 ptr
|
|
srl %o1, 0x4, %o1 ! Clear low 4 bits
|
|
sll %o1, 0x8, %o1 ! Make physical
|
|
|
|
/* Ok, pull in the PTD. */
|
|
lda [%o1] ASI_M_BYPASS, %o2 ! This is the 0x0 16MB pgd
|
|
|
|
/* Calculate to KERNBASE entry. */
|
|
add %o1, KERNBASE >> (SRMMU_PGDIR_SHIFT - 2), %o3
|
|
|
|
/* Poke the entry into the calculated address. */
|
|
sta %o2, [%o3] ASI_M_BYPASS
|
|
|
|
/* I don't get it Sun, if you engineered all these
|
|
* boot loaders and the PROM (thank you for the debugging
|
|
* features btw) why did you not have them load kernel
|
|
* images up in high address space, since this is necessary
|
|
* for ABI compliance anyways? Does this low-mapping provide
|
|
* enhanced interoperability?
|
|
*
|
|
* "The PROM is the computer."
|
|
*/
|
|
|
|
/* Ok, restore the MMU control register we saved in %g5 */
|
|
sta %g5, [%g0] ASI_M_MMUREGS ! POW... ouch
|
|
|
|
/* Turn traps back on. We saved it in %g3 earlier. */
|
|
wr %g3, 0x0, %psr ! tick tock, tick tock
|
|
|
|
/* Now we burn precious CPU cycles due to bad engineering. */
|
|
WRITE_PAUSE
|
|
|
|
/* Wow, all that just to move a 32-bit value from one
|
|
* place to another... Jump to high memory.
|
|
*/
|
|
b go_to_highmem
|
|
nop
|
|
|
|
/* This works on viking's in Mbus mode and all
|
|
* other MBUS modules. It is virtually the same as
|
|
* the above madness sans turning traps off and flipping
|
|
* the AC bit.
|
|
*/
|
|
srmmu_nviking:
|
|
set AC_M_CTPR, %g1
|
|
lda [%g1] ASI_M_MMUREGS, %g1 ! get ctx table ptr
|
|
sll %g1, 0x4, %g1 ! make physical addr
|
|
lda [%g1] ASI_M_BYPASS, %g1 ! ptr to level 1 pg_table
|
|
srl %g1, 0x4, %g1
|
|
sll %g1, 0x8, %g1 ! make phys addr for l1 tbl
|
|
|
|
lda [%g1] ASI_M_BYPASS, %g2 ! get level1 entry for 0x0
|
|
add %g1, KERNBASE >> (SRMMU_PGDIR_SHIFT - 2), %g3
|
|
sta %g2, [%g3] ASI_M_BYPASS ! place at KERNBASE entry
|
|
b go_to_highmem
|
|
nop ! wheee....
|
|
|
|
/* This remaps the kernel on Sun4/4xx machines
|
|
* that have the Sun Mutant Three Level MMU.
|
|
* It's like a platypus, Sun didn't have the
|
|
* SRMMU in conception so they kludged the three
|
|
* level logic in the regular Sun4 MMU probably.
|
|
*
|
|
* Basically, you take each entry in the top level
|
|
* directory that maps the low 3MB starting at
|
|
* address zero and put the mapping in the KERNBASE
|
|
* slots. These top level pgd's are called regmaps.
|
|
*/
|
|
sun4_mutant_remap:
|
|
or %g0, %g0, %g3 ! source base
|
|
sethi %hi(KERNBASE), %g4 ! destination base
|
|
or %g4, %lo(KERNBASE), %g4
|
|
sethi %hi(0x300000), %g5
|
|
or %g5, %lo(0x300000), %g5 ! upper bound 3MB
|
|
or %g0, 0x1, %l6
|
|
sll %l6, 24, %l6 ! Regmap mapping size
|
|
add %g3, 0x2, %g3 ! Base magic
|
|
add %g4, 0x2, %g4 ! Base magic
|
|
|
|
/* Main remapping loop on Sun4-Mutant-MMU.
|
|
* "I am not an animal..." -Famous Mutant Person
|
|
*/
|
|
sun4_mutant_loop:
|
|
lduha [%g3] ASI_REGMAP, %g2 ! Get lower entry
|
|
stha %g2, [%g4] ASI_REGMAP ! Store in high entry
|
|
add %g4, %l6, %g4 ! Move up high memory ptr
|
|
subcc %g3, %g5, %g0 ! Reached our limit?
|
|
blu sun4_mutant_loop ! Nope, loop again
|
|
add %g3, %l6, %g3 ! delay, Move up low ptr
|
|
b go_to_highmem ! Jump to high memory.
|
|
nop
|
|
|
|
/* The following is for non-4/4xx sun4 MMU's. */
|
|
sun4_normal_remap:
|
|
mov 0, %g3 ! source base
|
|
set KERNBASE, %g4 ! destination base
|
|
set 0x300000, %g5 ! upper bound 3MB
|
|
mov 1, %l6
|
|
sll %l6, 18, %l6 ! sun4 mmu segmap size
|
|
sun4_normal_loop:
|
|
lduha [%g3] ASI_SEGMAP, %g6 ! load phys_seg
|
|
stha %g6, [%g4] ASI_SEGMAP ! stort new virt mapping
|
|
add %g3, %l6, %g3 ! increment source pointer
|
|
subcc %g3, %g5, %g0 ! reached limit?
|
|
blu sun4_normal_loop ! nope, loop again
|
|
add %g4, %l6, %g4 ! delay, increment dest ptr
|
|
b go_to_highmem
|
|
nop
|
|
|
|
/* The following works for Sun4c MMU's */
|
|
sun4c_remap:
|
|
mov 0, %g3 ! source base
|
|
set KERNBASE, %g4 ! destination base
|
|
set 0x300000, %g5 ! upper bound 3MB
|
|
mov 1, %l6
|
|
sll %l6, 18, %l6 ! sun4c mmu segmap size
|
|
sun4c_remap_loop:
|
|
lda [%g3] ASI_SEGMAP, %g6 ! load phys_seg
|
|
sta %g6, [%g4] ASI_SEGMAP ! store new virt mapping
|
|
add %g3, %l6, %g3 ! Increment source ptr
|
|
subcc %g3, %g5, %g0 ! Reached limit?
|
|
bl sun4c_remap_loop ! Nope, loop again
|
|
add %g4, %l6, %g4 ! delay, Increment dest ptr
|
|
|
|
/* Now do a non-relative jump so that PC is in high-memory */
|
|
go_to_highmem:
|
|
set execute_in_high_mem, %g1
|
|
jmpl %g1, %g0
|
|
nop
|
|
|
|
/* The code above should be at beginning and we have to take care about
|
|
* short jumps, as branching to .init.text section from .text is usually
|
|
* impossible */
|
|
__INIT
|
|
/* Acquire boot time privileged register values, this will help debugging.
|
|
* I figure out and store nwindows and nwindowsm1 later on.
|
|
*/
|
|
execute_in_high_mem:
|
|
mov %l0, %o0 ! put back romvec
|
|
mov %l1, %o1 ! and debug_vec
|
|
|
|
sethi %hi(prom_vector_p), %g1
|
|
st %o0, [%g1 + %lo(prom_vector_p)]
|
|
|
|
sethi %hi(linux_dbvec), %g1
|
|
st %o1, [%g1 + %lo(linux_dbvec)]
|
|
|
|
ld [%o0 + 0x4], %o3
|
|
and %o3, 0x3, %o5 ! get the version
|
|
|
|
cmp %o3, 0x2 ! a v2 prom?
|
|
be found_version
|
|
nop
|
|
|
|
/* paul@sfe.com.au */
|
|
cmp %o3, 0x3 ! a v3 prom?
|
|
be found_version
|
|
nop
|
|
|
|
/* Old sun4's pass our load address into %o0 instead of the prom
|
|
* pointer. On sun4's you have to hard code the romvec pointer into
|
|
* your code. Sun probably still does that because they don't even
|
|
* trust their own "OpenBoot" specifications.
|
|
*/
|
|
set LOAD_ADDR, %g6
|
|
cmp %o0, %g6 ! an old sun4?
|
|
be sun4_init
|
|
nop
|
|
|
|
found_version:
|
|
/* Get the machine type via the mysterious romvec node operations. */
|
|
|
|
add %g7, 0x1c, %l1
|
|
ld [%l1], %l0
|
|
ld [%l0], %l0
|
|
call %l0
|
|
or %g0, %g0, %o0 ! next_node(0) = first_node
|
|
or %o0, %g0, %g6
|
|
|
|
sethi %hi(cputypvar), %o1 ! First node has cpu-arch
|
|
or %o1, %lo(cputypvar), %o1
|
|
sethi %hi(cputypval), %o2 ! information, the string
|
|
or %o2, %lo(cputypval), %o2
|
|
ld [%l1], %l0 ! 'compatibility' tells
|
|
ld [%l0 + 0xc], %l0 ! that we want 'sun4x' where
|
|
call %l0 ! x is one of '', 'c', 'm',
|
|
nop ! 'd' or 'e'. %o2 holds pointer
|
|
! to a buf where above string
|
|
! will get stored by the prom.
|
|
|
|
subcc %o0, %g0, %g0
|
|
bpos got_prop ! Got the property
|
|
nop
|
|
|
|
or %g6, %g0, %o0
|
|
sethi %hi(cputypvar_sun4m), %o1
|
|
or %o1, %lo(cputypvar_sun4m), %o1
|
|
sethi %hi(cputypval), %o2
|
|
or %o2, %lo(cputypval), %o2
|
|
ld [%l1], %l0
|
|
ld [%l0 + 0xc], %l0
|
|
call %l0
|
|
nop
|
|
|
|
got_prop:
|
|
#ifdef CONFIG_SPARC_LEON
|
|
/* no cpu-type check is needed, it is a SPARC-LEON */
|
|
|
|
sethi %hi(boot_cpu_id), %g2 ! boot-cpu index
|
|
|
|
#ifdef CONFIG_SMP
|
|
ldub [%g2 + %lo(boot_cpu_id)], %g1
|
|
cmp %g1, 0xff ! unset means first CPU
|
|
bne leon_smp_cpu_startup ! continue only with master
|
|
nop
|
|
#endif
|
|
/* Get CPU-ID from most significant 4-bit of ASR17 */
|
|
rd %asr17, %g1
|
|
srl %g1, 28, %g1
|
|
|
|
/* Update boot_cpu_id only on boot cpu */
|
|
stub %g1, [%g2 + %lo(boot_cpu_id)]
|
|
|
|
ba sun4c_continue_boot
|
|
nop
|
|
#endif
|
|
set cputypval, %o2
|
|
ldub [%o2 + 0x4], %l1
|
|
|
|
cmp %l1, ' '
|
|
be 1f
|
|
cmp %l1, 'c'
|
|
be 1f
|
|
cmp %l1, 'm'
|
|
be 1f
|
|
cmp %l1, 's'
|
|
be 1f
|
|
cmp %l1, 'd'
|
|
be 1f
|
|
cmp %l1, 'e'
|
|
be no_sun4e_here ! Could be a sun4e.
|
|
nop
|
|
b no_sun4u_here ! AIEEE, a V9 sun4u... Get our BIG BROTHER kernel :))
|
|
nop
|
|
|
|
1: set cputypval, %l1
|
|
ldub [%l1 + 0x4], %l1
|
|
cmp %l1, 'm' ! Test for sun4d, sun4e ?
|
|
be sun4m_init
|
|
cmp %l1, 's' ! Treat sun4s as sun4m
|
|
be sun4m_init
|
|
cmp %l1, 'd' ! Let us see how the beast will die
|
|
be sun4d_init
|
|
nop
|
|
|
|
/* Jump into mmu context zero. */
|
|
set AC_CONTEXT, %g1
|
|
stba %g0, [%g1] ASI_CONTROL
|
|
|
|
b sun4c_continue_boot
|
|
nop
|
|
|
|
/* CPUID in bootbus can be found at PA 0xff0140000 */
|
|
#define SUN4D_BOOTBUS_CPUID 0xf0140000
|
|
|
|
sun4d_init:
|
|
/* Need to patch call to handler_irq */
|
|
set patch_handler_irq, %g4
|
|
set sun4d_handler_irq, %g5
|
|
sethi %hi(0x40000000), %g3 ! call
|
|
sub %g5, %g4, %g5
|
|
srl %g5, 2, %g5
|
|
or %g5, %g3, %g5
|
|
st %g5, [%g4]
|
|
|
|
#ifdef CONFIG_SMP
|
|
/* Get our CPU id out of bootbus */
|
|
set SUN4D_BOOTBUS_CPUID, %g3
|
|
lduba [%g3] ASI_M_CTL, %g3
|
|
and %g3, 0xf8, %g3
|
|
srl %g3, 3, %g4
|
|
sta %g4, [%g0] ASI_M_VIKING_TMP1
|
|
sethi %hi(boot_cpu_id), %g5
|
|
stb %g4, [%g5 + %lo(boot_cpu_id)]
|
|
#endif
|
|
|
|
/* Fall through to sun4m_init */
|
|
|
|
sun4m_init:
|
|
/* XXX Fucking Cypress... */
|
|
lda [%g0] ASI_M_MMUREGS, %g5
|
|
srl %g5, 28, %g4
|
|
|
|
cmp %g4, 1
|
|
bne 1f
|
|
srl %g5, 24, %g4
|
|
|
|
and %g4, 0xf, %g4
|
|
cmp %g4, 7 /* This would be a HyperSparc. */
|
|
|
|
bne 2f
|
|
nop
|
|
|
|
1:
|
|
|
|
#define PATCH_IT(dst, src) \
|
|
set (dst), %g5; \
|
|
set (src), %g4; \
|
|
ld [%g4], %g3; \
|
|
st %g3, [%g5]; \
|
|
ld [%g4+0x4], %g3; \
|
|
st %g3, [%g5+0x4];
|
|
|
|
/* Signed multiply. */
|
|
PATCH_IT(.mul, .mul_patch)
|
|
PATCH_IT(.mul+0x08, .mul_patch+0x08)
|
|
|
|
/* Signed remainder. */
|
|
PATCH_IT(.rem, .rem_patch)
|
|
PATCH_IT(.rem+0x08, .rem_patch+0x08)
|
|
PATCH_IT(.rem+0x10, .rem_patch+0x10)
|
|
PATCH_IT(.rem+0x18, .rem_patch+0x18)
|
|
PATCH_IT(.rem+0x20, .rem_patch+0x20)
|
|
PATCH_IT(.rem+0x28, .rem_patch+0x28)
|
|
|
|
/* Signed division. */
|
|
PATCH_IT(.div, .div_patch)
|
|
PATCH_IT(.div+0x08, .div_patch+0x08)
|
|
PATCH_IT(.div+0x10, .div_patch+0x10)
|
|
PATCH_IT(.div+0x18, .div_patch+0x18)
|
|
PATCH_IT(.div+0x20, .div_patch+0x20)
|
|
|
|
/* Unsigned multiply. */
|
|
PATCH_IT(.umul, .umul_patch)
|
|
PATCH_IT(.umul+0x08, .umul_patch+0x08)
|
|
|
|
/* Unsigned remainder. */
|
|
PATCH_IT(.urem, .urem_patch)
|
|
PATCH_IT(.urem+0x08, .urem_patch+0x08)
|
|
PATCH_IT(.urem+0x10, .urem_patch+0x10)
|
|
PATCH_IT(.urem+0x18, .urem_patch+0x18)
|
|
|
|
/* Unsigned division. */
|
|
PATCH_IT(.udiv, .udiv_patch)
|
|
PATCH_IT(.udiv+0x08, .udiv_patch+0x08)
|
|
PATCH_IT(.udiv+0x10, .udiv_patch+0x10)
|
|
|
|
#undef PATCH_IT
|
|
|
|
/* Ok, the PROM could have done funny things and apple cider could still
|
|
* be sitting in the fault status/address registers. Read them all to
|
|
* clear them so we don't get magic faults later on.
|
|
*/
|
|
/* This sucks, apparently this makes Vikings call prom panic, will fix later */
|
|
2:
|
|
rd %psr, %o1
|
|
srl %o1, 28, %o1 ! Get a type of the CPU
|
|
|
|
subcc %o1, 4, %g0 ! TI: Viking or MicroSPARC
|
|
be sun4c_continue_boot
|
|
nop
|
|
|
|
set AC_M_SFSR, %o0
|
|
lda [%o0] ASI_M_MMUREGS, %g0
|
|
set AC_M_SFAR, %o0
|
|
lda [%o0] ASI_M_MMUREGS, %g0
|
|
|
|
/* Fujitsu MicroSPARC-II has no asynchronous flavors of FARs */
|
|
subcc %o1, 0, %g0
|
|
be sun4c_continue_boot
|
|
nop
|
|
|
|
set AC_M_AFSR, %o0
|
|
lda [%o0] ASI_M_MMUREGS, %g0
|
|
set AC_M_AFAR, %o0
|
|
lda [%o0] ASI_M_MMUREGS, %g0
|
|
nop
|
|
|
|
|
|
sun4c_continue_boot:
|
|
|
|
|
|
/* Aieee, now set PC and nPC, enable traps, give ourselves a stack and it's
|
|
* show-time!
|
|
*/
|
|
|
|
sethi %hi(cputyp), %o0
|
|
st %g4, [%o0 + %lo(cputyp)]
|
|
|
|
/* Turn on Supervisor, EnableFloating, and all the PIL bits.
|
|
* Also puts us in register window zero with traps off.
|
|
*/
|
|
set (PSR_PS | PSR_S | PSR_PIL | PSR_EF), %g2
|
|
wr %g2, 0x0, %psr
|
|
WRITE_PAUSE
|
|
|
|
/* I want a kernel stack NOW! */
|
|
set init_thread_union, %g1
|
|
set (THREAD_SIZE - STACKFRAME_SZ), %g2
|
|
add %g1, %g2, %sp
|
|
mov 0, %fp /* And for good luck */
|
|
|
|
/* Zero out our BSS section. */
|
|
set __bss_start , %o0 ! First address of BSS
|
|
set _end , %o1 ! Last address of BSS
|
|
add %o0, 0x1, %o0
|
|
1:
|
|
stb %g0, [%o0]
|
|
subcc %o0, %o1, %g0
|
|
bl 1b
|
|
add %o0, 0x1, %o0
|
|
|
|
/* If boot_cpu_id has not been setup by machine specific
|
|
* init-code above we default it to zero.
|
|
*/
|
|
sethi %hi(boot_cpu_id), %g2
|
|
ldub [%g2 + %lo(boot_cpu_id)], %g3
|
|
cmp %g3, 0xff
|
|
bne 1f
|
|
nop
|
|
mov %g0, %g3
|
|
stub %g3, [%g2 + %lo(boot_cpu_id)]
|
|
|
|
1: /* boot_cpu_id set. calculate boot_cpu_id4 = boot_cpu_id*4 */
|
|
sll %g3, 2, %g3
|
|
sethi %hi(boot_cpu_id4), %g2
|
|
stub %g3, [%g2 + %lo(boot_cpu_id4)]
|
|
|
|
/* Initialize the uwinmask value for init task just in case.
|
|
* But first make current_set[boot_cpu_id] point to something useful.
|
|
*/
|
|
set init_thread_union, %g6
|
|
set current_set, %g2
|
|
#ifdef CONFIG_SMP
|
|
st %g6, [%g2]
|
|
add %g2, %g3, %g2
|
|
#endif
|
|
st %g6, [%g2]
|
|
|
|
st %g0, [%g6 + TI_UWINMASK]
|
|
|
|
/* Compute NWINDOWS and stash it away. Now uses %wim trick explained
|
|
* in the V8 manual. Ok, this method seems to work, Sparc is cool...
|
|
* No, it doesn't work, have to play the save/readCWP/restore trick.
|
|
*/
|
|
|
|
wr %g0, 0x0, %wim ! so we do not get a trap
|
|
WRITE_PAUSE
|
|
|
|
save
|
|
|
|
rd %psr, %g3
|
|
|
|
restore
|
|
|
|
and %g3, 0x1f, %g3
|
|
add %g3, 0x1, %g3
|
|
|
|
mov 2, %g1
|
|
wr %g1, 0x0, %wim ! make window 1 invalid
|
|
WRITE_PAUSE
|
|
|
|
cmp %g3, 0x7
|
|
bne 2f
|
|
nop
|
|
|
|
/* Adjust our window handling routines to
|
|
* do things correctly on 7 window Sparcs.
|
|
*/
|
|
|
|
#define PATCH_INSN(src, dest) \
|
|
set src, %g5; \
|
|
set dest, %g2; \
|
|
ld [%g5], %g4; \
|
|
st %g4, [%g2];
|
|
|
|
/* Patch for window spills... */
|
|
PATCH_INSN(spnwin_patch1_7win, spnwin_patch1)
|
|
PATCH_INSN(spnwin_patch2_7win, spnwin_patch2)
|
|
PATCH_INSN(spnwin_patch3_7win, spnwin_patch3)
|
|
|
|
/* Patch for window fills... */
|
|
PATCH_INSN(fnwin_patch1_7win, fnwin_patch1)
|
|
PATCH_INSN(fnwin_patch2_7win, fnwin_patch2)
|
|
|
|
/* Patch for trap entry setup... */
|
|
PATCH_INSN(tsetup_7win_patch1, tsetup_patch1)
|
|
PATCH_INSN(tsetup_7win_patch2, tsetup_patch2)
|
|
PATCH_INSN(tsetup_7win_patch3, tsetup_patch3)
|
|
PATCH_INSN(tsetup_7win_patch4, tsetup_patch4)
|
|
PATCH_INSN(tsetup_7win_patch5, tsetup_patch5)
|
|
PATCH_INSN(tsetup_7win_patch6, tsetup_patch6)
|
|
|
|
/* Patch for returning from traps... */
|
|
PATCH_INSN(rtrap_7win_patch1, rtrap_patch1)
|
|
PATCH_INSN(rtrap_7win_patch2, rtrap_patch2)
|
|
PATCH_INSN(rtrap_7win_patch3, rtrap_patch3)
|
|
PATCH_INSN(rtrap_7win_patch4, rtrap_patch4)
|
|
PATCH_INSN(rtrap_7win_patch5, rtrap_patch5)
|
|
|
|
/* Patch for killing user windows from the register file. */
|
|
PATCH_INSN(kuw_patch1_7win, kuw_patch1)
|
|
|
|
/* Now patch the kernel window flush sequences.
|
|
* This saves 2 traps on every switch and fork.
|
|
*/
|
|
set 0x01000000, %g4
|
|
set flush_patch_one, %g5
|
|
st %g4, [%g5 + 0x18]
|
|
st %g4, [%g5 + 0x1c]
|
|
set flush_patch_two, %g5
|
|
st %g4, [%g5 + 0x18]
|
|
st %g4, [%g5 + 0x1c]
|
|
set flush_patch_three, %g5
|
|
st %g4, [%g5 + 0x18]
|
|
st %g4, [%g5 + 0x1c]
|
|
set flush_patch_four, %g5
|
|
st %g4, [%g5 + 0x18]
|
|
st %g4, [%g5 + 0x1c]
|
|
set flush_patch_exception, %g5
|
|
st %g4, [%g5 + 0x18]
|
|
st %g4, [%g5 + 0x1c]
|
|
set flush_patch_switch, %g5
|
|
st %g4, [%g5 + 0x18]
|
|
st %g4, [%g5 + 0x1c]
|
|
|
|
2:
|
|
sethi %hi(nwindows), %g4
|
|
st %g3, [%g4 + %lo(nwindows)] ! store final value
|
|
sub %g3, 0x1, %g3
|
|
sethi %hi(nwindowsm1), %g4
|
|
st %g3, [%g4 + %lo(nwindowsm1)]
|
|
|
|
/* Here we go, start using Linux's trap table... */
|
|
set trapbase, %g3
|
|
wr %g3, 0x0, %tbr
|
|
WRITE_PAUSE
|
|
|
|
/* Finally, turn on traps so that we can call c-code. */
|
|
rd %psr, %g3
|
|
wr %g3, 0x0, %psr
|
|
WRITE_PAUSE
|
|
|
|
wr %g3, PSR_ET, %psr
|
|
WRITE_PAUSE
|
|
|
|
/* First we call prom_init() to set up PROMLIB, then
|
|
* off to start_kernel().
|
|
*/
|
|
|
|
sethi %hi(prom_vector_p), %g5
|
|
ld [%g5 + %lo(prom_vector_p)], %o0
|
|
call prom_init
|
|
nop
|
|
|
|
call start_kernel
|
|
nop
|
|
|
|
/* We should not get here. */
|
|
call halt_me
|
|
nop
|
|
|
|
sun4_init:
|
|
sethi %hi(SUN4_PROM_VECTOR+0x84), %o1
|
|
ld [%o1 + %lo(SUN4_PROM_VECTOR+0x84)], %o1
|
|
set sun4_notsup, %o0
|
|
call %o1 /* printf */
|
|
nop
|
|
sethi %hi(SUN4_PROM_VECTOR+0xc4), %o1
|
|
ld [%o1 + %lo(SUN4_PROM_VECTOR+0xc4)], %o1
|
|
call %o1 /* exittomon */
|
|
nop
|
|
1: ba 1b ! Cannot exit into KMON
|
|
nop
|
|
|
|
no_sun4e_here:
|
|
ld [%g7 + 0x68], %o1
|
|
set sun4e_notsup, %o0
|
|
call %o1
|
|
nop
|
|
b halt_me
|
|
nop
|
|
|
|
__INITDATA
|
|
|
|
sun4u_1:
|
|
.asciz "finddevice"
|
|
.align 4
|
|
sun4u_2:
|
|
.asciz "/chosen"
|
|
.align 4
|
|
sun4u_3:
|
|
.asciz "getprop"
|
|
.align 4
|
|
sun4u_4:
|
|
.asciz "stdout"
|
|
.align 4
|
|
sun4u_5:
|
|
.asciz "write"
|
|
.align 4
|
|
sun4u_6:
|
|
.asciz "\n\rOn sun4u you have to use UltraLinux (64bit) kernel\n\rand not a 32bit sun4[cdem] version\n\r\n\r"
|
|
sun4u_6e:
|
|
.align 4
|
|
sun4u_7:
|
|
.asciz "exit"
|
|
.align 8
|
|
sun4u_a1:
|
|
.word 0, sun4u_1, 0, 1, 0, 1, 0, sun4u_2, 0
|
|
sun4u_r1:
|
|
.word 0
|
|
sun4u_a2:
|
|
.word 0, sun4u_3, 0, 4, 0, 1, 0
|
|
sun4u_i2:
|
|
.word 0, 0, sun4u_4, 0, sun4u_1, 0, 8, 0
|
|
sun4u_r2:
|
|
.word 0
|
|
sun4u_a3:
|
|
.word 0, sun4u_5, 0, 3, 0, 1, 0
|
|
sun4u_i3:
|
|
.word 0, 0, sun4u_6, 0, sun4u_6e - sun4u_6 - 1, 0
|
|
sun4u_r3:
|
|
.word 0
|
|
sun4u_a4:
|
|
.word 0, sun4u_7, 0, 0, 0, 0
|
|
sun4u_r4:
|
|
|
|
__INIT
|
|
no_sun4u_here:
|
|
set sun4u_a1, %o0
|
|
set current_pc, %l2
|
|
cmp %l2, %g3
|
|
be 1f
|
|
mov %o4, %l0
|
|
sub %g3, %l2, %l6
|
|
add %o0, %l6, %o0
|
|
mov %o0, %l4
|
|
mov sun4u_r4 - sun4u_a1, %l3
|
|
ld [%l4], %l5
|
|
2:
|
|
add %l4, 4, %l4
|
|
cmp %l5, %l2
|
|
add %l5, %l6, %l5
|
|
bgeu,a 3f
|
|
st %l5, [%l4 - 4]
|
|
3:
|
|
subcc %l3, 4, %l3
|
|
bne 2b
|
|
ld [%l4], %l5
|
|
1:
|
|
call %l0
|
|
mov %o0, %l1
|
|
|
|
ld [%l1 + (sun4u_r1 - sun4u_a1)], %o1
|
|
add %l1, (sun4u_a2 - sun4u_a1), %o0
|
|
call %l0
|
|
st %o1, [%o0 + (sun4u_i2 - sun4u_a2)]
|
|
|
|
ld [%l1 + (sun4u_1 - sun4u_a1)], %o1
|
|
add %l1, (sun4u_a3 - sun4u_a1), %o0
|
|
call %l0
|
|
st %o1, [%o0 + (sun4u_i3 - sun4u_a3)]
|
|
|
|
call %l0
|
|
add %l1, (sun4u_a4 - sun4u_a1), %o0
|
|
|
|
/* Not reached */
|
|
halt_me:
|
|
ld [%g7 + 0x74], %o0
|
|
call %o0 ! Get us out of here...
|
|
nop ! Apparently Solaris is better.
|
|
|
|
/* Ok, now we continue in the .data/.text sections */
|
|
|
|
.data
|
|
.align 4
|
|
|
|
/*
|
|
* Fill up the prom vector, note in particular the kind first element,
|
|
* no joke. I don't need all of them in here as the entire prom vector
|
|
* gets initialized in c-code so all routines can use it.
|
|
*/
|
|
|
|
prom_vector_p:
|
|
.word 0
|
|
|
|
/* We calculate the following at boot time, window fills/spills and trap entry
|
|
* code uses these to keep track of the register windows.
|
|
*/
|
|
|
|
.align 4
|
|
.globl nwindows
|
|
.globl nwindowsm1
|
|
nwindows:
|
|
.word 8
|
|
nwindowsm1:
|
|
.word 7
|
|
|
|
/* Boot time debugger vector value. We need this later on. */
|
|
|
|
.align 4
|
|
.globl linux_dbvec
|
|
linux_dbvec:
|
|
.word 0
|
|
.word 0
|
|
|
|
.align 8
|
|
|
|
.globl lvl14_save
|
|
lvl14_save:
|
|
.word 0
|
|
.word 0
|
|
.word 0
|
|
.word 0
|
|
.word t_irq14
|
|
|
|
.section ".fixup",#alloc,#execinstr
|
|
.globl __ret_efault
|
|
__ret_efault:
|
|
ret
|
|
restore %g0, -EFAULT, %o0
|