diff options
author | Sam Ravnborg <sam@ravnborg.org> | 2008-12-03 03:08:37 -0800 |
---|---|---|
committer | David S. Miller <davem@davemloft.net> | 2008-12-04 09:17:20 -0800 |
commit | d670bd4f803c8b646acd20f3ba21e65458293faf (patch) | |
tree | eabc30aadce1556023c4aa445c649ba9e1d3f352 /arch/sparc/kernel/head.S | |
parent | 478b8fecda511942404ac232897a718cecd13e48 (diff) | |
download | op-kernel-dev-d670bd4f803c8b646acd20f3ba21e65458293faf.zip op-kernel-dev-d670bd4f803c8b646acd20f3ba21e65458293faf.tar.gz |
sparc: prepare kernel/ for unification
o sparc32 files with identical names to sparc64 renamed to <name>_32.S
o introduced a few Kconfig helpers to simplify Makefile logic
o refactored Makefile to prepare for unification
- use obj-$(CONFIG_SPARC32) for sparc32 specific files
- use <name>_$(BITS) for files where sparc64 has a _64 variant
- sparc64 directly include a few files where sparc32 builds them,
refer to these files directly (no BITS)
- sneaked in -Werror as used by sparc64
o modified sparc/Makefile to use the new names for head/init_task
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc/kernel/head.S')
-rw-r--r-- | arch/sparc/kernel/head.S | 1295 |
1 files changed, 0 insertions, 1295 deletions
diff --git a/arch/sparc/kernel/head.S b/arch/sparc/kernel/head.S deleted file mode 100644 index 51b4042..0000000 --- a/arch/sparc/kernel/head.S +++ /dev/null @@ -1,1295 +0,0 @@ -/* - * head.S: The initial boot code for the Sparc port of Linux. - * - * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu) - * Copyright (C) 1995,1999 Pete Zaitcev (zaitcev@yahoo.com) - * Copyright (C) 1996 Miguel de Icaza (miguel@nuclecu.unam.mx) - * Copyright (C) 1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz) - * Copyright (C) 1997 Michael A. Griffith (grif@acm.org) - * - * CompactPCI platform by Eric Brower, 1999. - */ - -#include <linux/version.h> -#include <linux/init.h> - -#include <asm/head.h> -#include <asm/asi.h> -#include <asm/contregs.h> -#include <asm/ptrace.h> -#include <asm/psr.h> -#include <asm/page.h> -#include <asm/kdebug.h> -#include <asm/winmacro.h> -#include <asm/thread_info.h> /* TI_UWINMASK */ -#include <asm/errno.h> -#include <asm/pgtsrmmu.h> /* SRMMU_PGDIR_SHIFT */ - - .data -/* - * The following are used with the prom_vector node-ops to figure out - * the cpu-type - */ - - .align 4 -cputyp: - .word 1 - - .align 4 - .globl cputypval -cputypval: - .asciz "sun4c" - .ascii " " - -cputypvalend: -cputypvallen = cputypvar - cputypval - - .align 4 -/* - * Sun people can't spell worth damn. "compatability" indeed. - * At least we *know* we can't spell, and use a spell-checker. - */ - -/* Uh, actually Linus it is I who cannot spell. Too much murky - * Sparc assembly will do this to ya. - */ -cputypvar: - .asciz "compatability" - -/* Tested on SS-5, SS-10. Probably someone at Sun applied a spell-checker. */ - .align 4 -cputypvar_sun4m: - .asciz "compatible" - - .align 4 - -sun4_notsup: - .asciz "Sparc-Linux sun4 support does no longer exist.\n\n" - .align 4 - -sun4e_notsup: - .asciz "Sparc-Linux sun4e support does not exist\n\n" - .align 4 - - /* The Sparc trap table, bootloader gives us control at _start. */ - .section .text.head,"ax" - .globl start, _stext, _start, __stext - .globl trapbase -_start: /* danger danger */ -__stext: -_stext: -start: -trapbase: -#ifdef CONFIG_SMP -trapbase_cpu0: -#endif -/* We get control passed to us here at t_zero. */ -t_zero: b gokernel; nop; nop; nop; -t_tflt: SPARC_TFAULT /* Inst. Access Exception */ -t_bins: TRAP_ENTRY(0x2, bad_instruction) /* Illegal Instruction */ -t_pins: TRAP_ENTRY(0x3, priv_instruction) /* Privileged Instruction */ -t_fpd: TRAP_ENTRY(0x4, fpd_trap_handler) /* Floating Point Disabled */ -t_wovf: WINDOW_SPILL /* Window Overflow */ -t_wunf: WINDOW_FILL /* Window Underflow */ -t_mna: TRAP_ENTRY(0x7, mna_handler) /* Memory Address Not Aligned */ -t_fpe: TRAP_ENTRY(0x8, fpe_trap_handler) /* Floating Point Exception */ -t_dflt: SPARC_DFAULT /* Data Miss Exception */ -t_tio: TRAP_ENTRY(0xa, do_tag_overflow) /* Tagged Instruction Ovrflw */ -t_wpt: TRAP_ENTRY(0xb, do_watchpoint) /* Watchpoint Detected */ -t_badc: BAD_TRAP(0xc) BAD_TRAP(0xd) BAD_TRAP(0xe) BAD_TRAP(0xf) BAD_TRAP(0x10) -t_irq1: TRAP_ENTRY_INTERRUPT(1) /* IRQ Software/SBUS Level 1 */ -t_irq2: TRAP_ENTRY_INTERRUPT(2) /* IRQ SBUS Level 2 */ -t_irq3: TRAP_ENTRY_INTERRUPT(3) /* IRQ SCSI/DMA/SBUS Level 3 */ -t_irq4: TRAP_ENTRY_INTERRUPT(4) /* IRQ Software Level 4 */ -t_irq5: TRAP_ENTRY_INTERRUPT(5) /* IRQ SBUS/Ethernet Level 5 */ -t_irq6: TRAP_ENTRY_INTERRUPT(6) /* IRQ Software Level 6 */ -t_irq7: TRAP_ENTRY_INTERRUPT(7) /* IRQ Video/SBUS Level 5 */ -t_irq8: TRAP_ENTRY_INTERRUPT(8) /* IRQ SBUS Level 6 */ -t_irq9: TRAP_ENTRY_INTERRUPT(9) /* IRQ SBUS Level 7 */ -t_irq10:TRAP_ENTRY_INTERRUPT(10) /* IRQ Timer #1 (one we use) */ -t_irq11:TRAP_ENTRY_INTERRUPT(11) /* IRQ Floppy Intr. */ -t_irq12:TRAP_ENTRY_INTERRUPT(12) /* IRQ Zilog serial chip */ -t_irq13:TRAP_ENTRY_INTERRUPT(13) /* IRQ Audio Intr. */ -t_irq14:TRAP_ENTRY_INTERRUPT(14) /* IRQ Timer #2 */ - .globl t_nmi -#ifndef CONFIG_SMP -t_nmi: NMI_TRAP /* Level 15 (NMI) */ -#else -t_nmi: TRAP_ENTRY(0x1f, linux_trap_ipi15_sun4m) -#endif -t_racc: TRAP_ENTRY(0x20, do_reg_access) /* General Register Access Error */ -t_iacce:BAD_TRAP(0x21) /* Instr Access Error */ -t_bad22:BAD_TRAP(0x22) BAD_TRAP(0x23) -t_cpdis:TRAP_ENTRY(0x24, do_cp_disabled) /* Co-Processor Disabled */ -t_uflsh:SKIP_TRAP(0x25, unimp_flush) /* Unimplemented FLUSH inst. */ -t_bad26:BAD_TRAP(0x26) BAD_TRAP(0x27) -t_cpexc:TRAP_ENTRY(0x28, do_cp_exception) /* Co-Processor Exception */ -t_dacce:SPARC_DFAULT /* Data Access Error */ -t_hwdz: TRAP_ENTRY(0x2a, do_hw_divzero) /* Division by zero, you lose... */ -t_dserr:BAD_TRAP(0x2b) /* Data Store Error */ -t_daccm:BAD_TRAP(0x2c) /* Data Access MMU-Miss */ -t_bad2d:BAD_TRAP(0x2d) BAD_TRAP(0x2e) BAD_TRAP(0x2f) BAD_TRAP(0x30) BAD_TRAP(0x31) -t_bad32:BAD_TRAP(0x32) BAD_TRAP(0x33) BAD_TRAP(0x34) BAD_TRAP(0x35) BAD_TRAP(0x36) -t_bad37:BAD_TRAP(0x37) BAD_TRAP(0x38) BAD_TRAP(0x39) BAD_TRAP(0x3a) BAD_TRAP(0x3b) -t_iaccm:BAD_TRAP(0x3c) /* Instr Access MMU-Miss */ -t_bad3d:BAD_TRAP(0x3d) BAD_TRAP(0x3e) BAD_TRAP(0x3f) BAD_TRAP(0x40) BAD_TRAP(0x41) -t_bad42:BAD_TRAP(0x42) BAD_TRAP(0x43) BAD_TRAP(0x44) BAD_TRAP(0x45) BAD_TRAP(0x46) -t_bad47:BAD_TRAP(0x47) BAD_TRAP(0x48) BAD_TRAP(0x49) BAD_TRAP(0x4a) BAD_TRAP(0x4b) -t_bad4c:BAD_TRAP(0x4c) BAD_TRAP(0x4d) BAD_TRAP(0x4e) BAD_TRAP(0x4f) BAD_TRAP(0x50) -t_bad51:BAD_TRAP(0x51) BAD_TRAP(0x52) BAD_TRAP(0x53) BAD_TRAP(0x54) BAD_TRAP(0x55) -t_bad56:BAD_TRAP(0x56) BAD_TRAP(0x57) BAD_TRAP(0x58) BAD_TRAP(0x59) BAD_TRAP(0x5a) -t_bad5b:BAD_TRAP(0x5b) BAD_TRAP(0x5c) BAD_TRAP(0x5d) BAD_TRAP(0x5e) BAD_TRAP(0x5f) -t_bad60:BAD_TRAP(0x60) BAD_TRAP(0x61) BAD_TRAP(0x62) BAD_TRAP(0x63) BAD_TRAP(0x64) -t_bad65:BAD_TRAP(0x65) BAD_TRAP(0x66) BAD_TRAP(0x67) BAD_TRAP(0x68) BAD_TRAP(0x69) -t_bad6a:BAD_TRAP(0x6a) BAD_TRAP(0x6b) BAD_TRAP(0x6c) BAD_TRAP(0x6d) BAD_TRAP(0x6e) -t_bad6f:BAD_TRAP(0x6f) BAD_TRAP(0x70) BAD_TRAP(0x71) BAD_TRAP(0x72) BAD_TRAP(0x73) -t_bad74:BAD_TRAP(0x74) BAD_TRAP(0x75) BAD_TRAP(0x76) BAD_TRAP(0x77) BAD_TRAP(0x78) -t_bad79:BAD_TRAP(0x79) BAD_TRAP(0x7a) BAD_TRAP(0x7b) BAD_TRAP(0x7c) BAD_TRAP(0x7d) -t_bad7e:BAD_TRAP(0x7e) BAD_TRAP(0x7f) -t_bad80:BAD_TRAP(0x80) /* SunOS System Call */ -t_sbkpt:BREAKPOINT_TRAP /* Software Breakpoint/KGDB */ -t_divz: TRAP_ENTRY(0x82, do_hw_divzero) /* Divide by zero trap */ -t_flwin:TRAP_ENTRY(0x83, do_flush_windows) /* Flush Windows Trap */ -t_clwin:BAD_TRAP(0x84) /* Clean Windows Trap */ -t_rchk: BAD_TRAP(0x85) /* Range Check */ -t_funal:BAD_TRAP(0x86) /* Fix Unaligned Access Trap */ -t_iovf: BAD_TRAP(0x87) /* Integer Overflow Trap */ -t_bad88:BAD_TRAP(0x88) /* Slowaris System Call */ -t_bad89:BAD_TRAP(0x89) /* Net-B.S. System Call */ -t_bad8a:BAD_TRAP(0x8a) BAD_TRAP(0x8b) BAD_TRAP(0x8c) BAD_TRAP(0x8d) BAD_TRAP(0x8e) -t_bad8f:BAD_TRAP(0x8f) -t_linux:LINUX_SYSCALL_TRAP /* Linux System Call */ -t_bad91:BAD_TRAP(0x91) BAD_TRAP(0x92) BAD_TRAP(0x93) BAD_TRAP(0x94) BAD_TRAP(0x95) -t_bad96:BAD_TRAP(0x96) BAD_TRAP(0x97) BAD_TRAP(0x98) BAD_TRAP(0x99) BAD_TRAP(0x9a) -t_bad9b:BAD_TRAP(0x9b) BAD_TRAP(0x9c) BAD_TRAP(0x9d) BAD_TRAP(0x9e) BAD_TRAP(0x9f) -t_getcc:GETCC_TRAP /* Get Condition Codes */ -t_setcc:SETCC_TRAP /* Set Condition Codes */ -t_getpsr:GETPSR_TRAP /* Get PSR Register */ -t_bada3:BAD_TRAP(0xa3) BAD_TRAP(0xa4) BAD_TRAP(0xa5) BAD_TRAP(0xa6) -t_bada7:BAD_TRAP(0xa7) -t_bada8:BAD_TRAP(0xa8) BAD_TRAP(0xa9) BAD_TRAP(0xaa) BAD_TRAP(0xab) -t_badac:BAD_TRAP(0xac) BAD_TRAP(0xad) BAD_TRAP(0xae) BAD_TRAP(0xaf) BAD_TRAP(0xb0) -t_badb1:BAD_TRAP(0xb1) BAD_TRAP(0xb2) BAD_TRAP(0xb3) BAD_TRAP(0xb4) BAD_TRAP(0xb5) -t_badb6:BAD_TRAP(0xb6) BAD_TRAP(0xb7) BAD_TRAP(0xb8) BAD_TRAP(0xb9) BAD_TRAP(0xba) -t_badbb:BAD_TRAP(0xbb) BAD_TRAP(0xbc) BAD_TRAP(0xbd) BAD_TRAP(0xbe) BAD_TRAP(0xbf) -t_badc0:BAD_TRAP(0xc0) BAD_TRAP(0xc1) BAD_TRAP(0xc2) BAD_TRAP(0xc3) BAD_TRAP(0xc4) -t_badc5:BAD_TRAP(0xc5) BAD_TRAP(0xc6) BAD_TRAP(0xc7) BAD_TRAP(0xc8) BAD_TRAP(0xc9) -t_badca:BAD_TRAP(0xca) BAD_TRAP(0xcb) BAD_TRAP(0xcc) BAD_TRAP(0xcd) BAD_TRAP(0xce) -t_badcf:BAD_TRAP(0xcf) BAD_TRAP(0xd0) BAD_TRAP(0xd1) BAD_TRAP(0xd2) BAD_TRAP(0xd3) -t_badd4:BAD_TRAP(0xd4) BAD_TRAP(0xd5) BAD_TRAP(0xd6) BAD_TRAP(0xd7) BAD_TRAP(0xd8) -t_badd9:BAD_TRAP(0xd9) BAD_TRAP(0xda) BAD_TRAP(0xdb) BAD_TRAP(0xdc) BAD_TRAP(0xdd) -t_badde:BAD_TRAP(0xde) BAD_TRAP(0xdf) BAD_TRAP(0xe0) BAD_TRAP(0xe1) BAD_TRAP(0xe2) -t_bade3:BAD_TRAP(0xe3) BAD_TRAP(0xe4) BAD_TRAP(0xe5) BAD_TRAP(0xe6) BAD_TRAP(0xe7) -t_bade8:BAD_TRAP(0xe8) BAD_TRAP(0xe9) BAD_TRAP(0xea) BAD_TRAP(0xeb) BAD_TRAP(0xec) -t_baded:BAD_TRAP(0xed) BAD_TRAP(0xee) BAD_TRAP(0xef) BAD_TRAP(0xf0) BAD_TRAP(0xf1) -t_badf2:BAD_TRAP(0xf2) BAD_TRAP(0xf3) BAD_TRAP(0xf4) BAD_TRAP(0xf5) BAD_TRAP(0xf6) -t_badf7:BAD_TRAP(0xf7) BAD_TRAP(0xf8) BAD_TRAP(0xf9) BAD_TRAP(0xfa) BAD_TRAP(0xfb) -t_badfc:BAD_TRAP(0xfc) -t_kgdb: KGDB_TRAP(0xfd) -dbtrap: BAD_TRAP(0xfe) /* Debugger/PROM breakpoint #1 */ -dbtrap2:BAD_TRAP(0xff) /* Debugger/PROM breakpoint #2 */ - - .globl end_traptable -end_traptable: - -#ifdef CONFIG_SMP - /* Trap tables for the other cpus. */ - .globl trapbase_cpu1, trapbase_cpu2, trapbase_cpu3 -trapbase_cpu1: - 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_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 .text.init 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: - 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)] - sll %g4, 2, %g4 - sethi %hi(boot_cpu_id4), %g5 - stb %g4, [%g5 + %lo(boot_cpu_id4)] -#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 - - /* 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 - sethi %hi(boot_cpu_id4), %g3 - ldub [%g3 + %lo(boot_cpu_id4)], %g3 - 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 |