diff options
Diffstat (limited to 'arch/cris/arch-v10')
| -rw-r--r-- | arch/cris/arch-v10/boot/compressed/head.S | 22 | ||||
| -rw-r--r-- | arch/cris/arch-v10/boot/rescue/head.S | 33 | ||||
| -rw-r--r-- | arch/cris/arch-v10/kernel/entry.S | 54 | ||||
| -rw-r--r-- | arch/cris/arch-v10/kernel/kgdb.c | 17 | ||||
| -rw-r--r-- | arch/cris/arch-v10/kernel/process.c | 3 |
5 files changed, 97 insertions, 32 deletions
diff --git a/arch/cris/arch-v10/boot/compressed/head.S b/arch/cris/arch-v10/boot/compressed/head.S index 4cbdd4b1d9d6..e73f44c998d9 100644 --- a/arch/cris/arch-v10/boot/compressed/head.S +++ b/arch/cris/arch-v10/boot/compressed/head.S @@ -13,7 +13,8 @@ #include <asm/arch/sv_addr_ag.h> #define RAM_INIT_MAGIC 0x56902387 - +#define COMMAND_LINE_MAGIC 0x87109563 + ;; Exported symbols .globl _input_data @@ -88,6 +89,12 @@ basse: move.d pc, r5 cmp.d r2, r1 bcs 1b nop + + ;; Save command line magic and address. + move.d _cmd_line_magic, $r12 + move.d $r10, [$r12] + move.d _cmd_line_addr, $r12 + move.d $r11, [$r12] ;; Do the decompression and save compressed size in _inptr @@ -98,7 +105,13 @@ basse: move.d pc, r5 move.d [_input_data], r9 ; flash address of compressed kernel add.d [_inptr], r9 ; size of compressed kernel - + + ;; Restore command line magic and address. + move.d _cmd_line_magic, $r10 + move.d [$r10], $r10 + move.d _cmd_line_addr, $r11 + move.d [$r11], $r11 + ;; Enter the decompressed kernel move.d RAM_INIT_MAGIC, r8 ; Tell kernel that DRAM is initialized jump 0x40004000 ; kernel is linked to this address @@ -107,5 +120,8 @@ basse: move.d pc, r5 _input_data: .dword 0 ; used by the decompressor - +_cmd_line_magic: + .dword 0 +_cmd_line_addr: + .dword 0 #include "../../lib/hw_settings.S" diff --git a/arch/cris/arch-v10/boot/rescue/head.S b/arch/cris/arch-v10/boot/rescue/head.S index 8689ea972c46..addb2194de0f 100644 --- a/arch/cris/arch-v10/boot/rescue/head.S +++ b/arch/cris/arch-v10/boot/rescue/head.S @@ -1,4 +1,4 @@ -/* $Id: head.S,v 1.6 2003/04/09 08:12:43 pkj Exp $ +/* $Id: head.S,v 1.7 2005/03/07 12:11:06 starvik Exp $ * * Rescue code, made to reside at the beginning of the * flash-memory. when it starts, it checks a partition @@ -121,12 +121,13 @@ ;; 0x80000000 if loaded in flash (as it should be) ;; since etrax actually starts at address 2 when booting from flash, we ;; put a nop (2 bytes) here first so we dont accidentally skip the di - + nop di jump in_cache ; enter cached area instead -in_cache: +in_cache: + ;; first put a jump test to give a possibility of upgrading the rescue code ;; without erasing/reflashing the sector. we put a longword of -1 here and if @@ -325,9 +326,29 @@ flash_ok: ;; result will be in r0 checksum: moveq 0, $r0 -1: addu.b [$r1+], $r0 - subq 1, $r2 - bne 1b + moveq CONFIG_ETRAX_FLASH1_SIZE, $r6 + + ;; If the first physical flash memory is exceeded wrap to the second one. + btstq 26, $r1 ; Are we addressing first flash? + bpl 1f + nop + clear.d $r6 + +1: test.d $r6 ; 0 = no wrapping + beq 2f + nop + lslq 20, $r6 ; Convert MB to bytes + sub.d $r1, $r6 + +2: addu.b [$r1+], $r0 + subq 1, $r6 ; Flash memory left + beq 3f + subq 1, $r2 ; Length left + bne 2b nop ret nop + +3: move.d MEM_CSE1_START, $r1 ; wrap to second flash + ba 2b + nop diff --git a/arch/cris/arch-v10/kernel/entry.S b/arch/cris/arch-v10/kernel/entry.S index 1bc44f481c34..c0163bf94a50 100644 --- a/arch/cris/arch-v10/kernel/entry.S +++ b/arch/cris/arch-v10/kernel/entry.S @@ -1,4 +1,4 @@ -/* $Id: entry.S,v 1.23 2004/10/19 13:07:37 starvik Exp $ +/* $Id: entry.S,v 1.28 2005/06/20 05:06:30 starvik Exp $ * * linux/arch/cris/entry.S * @@ -7,6 +7,22 @@ * Authors: Bjorn Wesen (bjornw@axis.com) * * $Log: entry.S,v $ + * Revision 1.28 2005/06/20 05:06:30 starvik + * Remove unnecessary diff to kernel.org tree + * + * Revision 1.27 2005/03/04 08:16:16 starvik + * Merge of Linux 2.6.11. + * + * Revision 1.26 2005/01/11 13:49:47 starvik + * Added NMI handler. + * + * Revision 1.25 2004/12/27 11:18:32 starvik + * Merge of Linux 2.6.10 (not functional yet). + * + * Revision 1.24 2004/12/22 10:41:23 starvik + * Updates to make v10 compile with the latest SMP aware generic code (even + * though v10 will never have SMP). + * * Revision 1.23 2004/10/19 13:07:37 starvik * Merge of Linux 2.6.9 * @@ -279,6 +295,7 @@ #ifdef CONFIG_PREEMPT ; Check if preemptive kernel scheduling should be done _resume_kernel: + di ; Load current task struct movs.w -8192, $r0 ; THREAD_SIZE = 8192 and.d $sp, $r0 @@ -291,12 +308,7 @@ _need_resched: bpl _Rexit nop ; Ok, lets's do some preemptive kernel scheduling - move.d PREEMPT_ACTIVE, $r10 - move.d $r10, [$r0+TI_preempt_count] ; Mark as active - ei - jsr schedule - clear.d [$r0+TI_preempt_count] ; Mark as inactive - di + jsr preempt_schedule_irq ; Load new task struct movs.w -8192, $r0 ; THREAD_SIZE = 8192 and.d $sp, $r0 @@ -590,15 +602,15 @@ mmu_bus_fault: move.d $r0, [$sp+16] 1: btstq 12, $r1 ; Refill? bpl 2f - lsrq PMD_SHIFT, $r1 ; Get PMD index into PGD (bit 24-31) - move.d [current_pgd], $r0 ; PGD for the current process + lsrq 24, $r1 ; Get PGD index (bit 24-31) + move.d [per_cpu__current_pgd], $r0 ; PGD for the current process move.d [$r0+$r1.d], $r0 ; Get PMD beq 2f nop and.w PAGE_MASK, $r0 ; Remove PMD flags move.d [R_MMU_CAUSE], $r1 lsrq PAGE_SHIFT, $r1 - and.d 0x7ff, $r1 ; Get PTE index into PMD (bit 13-24) + and.d 0x7ff, $r1 ; Get PTE index into PGD (bit 13-23) move.d [$r0+$r1.d], $r1 ; Get PTE beq 2f nop @@ -656,11 +668,6 @@ hwbreakpoint: nop IRQ1_interrupt: - -#if defined(CONFIG_ETRAX_WATCHDOG) && !defined(CONFIG_SVINTO_SIM) -;; If we receive a watchdog interrupt while it is not expected, then set -;; up a canonical frame and dump register contents before dying. - ;; this prologue MUST match the one in irq.h and the struct in ptregs.h!!! move $brp,[$sp=$sp-16]; instruction pointer and room for a fake SBFS frame push $srp @@ -672,9 +679,16 @@ IRQ1_interrupt: push $r10 ; push orig_r10 clear.d [$sp=$sp-4] ; frametype == 0, normal frame -;; We don't check that we actually were bit by the watchdog as opposed to -;; an external NMI, since there is currently no handler for external NMI. - + move.d [R_IRQ_MASK0_RD], $r1 ; External NMI or watchdog? + and.d 0x80000000, $r1 + beq wdog + move.d $sp, $r10 + jsr handle_nmi + setf m ; Enable NMI again + retb ; Return from NMI + nop +wdog: +#if defined(CONFIG_ETRAX_WATCHDOG) && !defined(CONFIG_SVINTO_SIM) ;; Check if we're waiting for reset to happen, as signalled by ;; hard_reset_now setting cause_of_death to a magic value. If so, just ;; get stuck until reset happens. @@ -1118,6 +1132,10 @@ sys_call_table: .long sys_mq_getsetattr .long sys_ni_syscall /* reserved for kexec */ .long sys_waitid + .long sys_ni_syscall /* 285 */ /* available */ + .long sys_add_key + .long sys_request_key + .long sys_keyctl /* * NOTE!! This doesn't have to be exact - we just have diff --git a/arch/cris/arch-v10/kernel/kgdb.c b/arch/cris/arch-v10/kernel/kgdb.c index 7d368c877ee9..b72e6a91a639 100644 --- a/arch/cris/arch-v10/kernel/kgdb.c +++ b/arch/cris/arch-v10/kernel/kgdb.c @@ -18,6 +18,10 @@ *! Jul 21 1999 Bjorn Wesen eLinux port *! *! $Log: kgdb.c,v $ +*! Revision 1.6 2005/01/14 10:12:17 starvik +*! KGDB on separate port. +*! Console fixes from 2.4. +*! *! Revision 1.5 2004/10/07 13:59:08 starvik *! Corrected call to set_int_vector *! @@ -71,7 +75,7 @@ *! *!--------------------------------------------------------------------------- *! -*! $Id: kgdb.c,v 1.5 2004/10/07 13:59:08 starvik Exp $ +*! $Id: kgdb.c,v 1.6 2005/01/14 10:12:17 starvik Exp $ *! *! (C) Copyright 1999, Axis Communications AB, LUND, SWEDEN *! @@ -225,6 +229,7 @@ #include <linux/kernel.h> #include <linux/delay.h> #include <linux/linkage.h> +#include <linux/reboot.h> #include <asm/setup.h> #include <asm/ptrace.h> @@ -1344,12 +1349,11 @@ handle_exception (int sigval) } } -/* The jump is to the address 0x00000002. Performs a complete re-start - from scratch. */ +/* Performs a complete re-start from scratch. */ static void kill_restart () { - __asm__ volatile ("jump 2"); + machine_restart(""); } /********************************** Breakpoint *******************************/ @@ -1506,6 +1510,11 @@ kgdb_handle_serial: bne goback nop + move.d [reg+0x5E], $r10 ; Get DCCR + btstq 8, $r10 ; Test the U-flag. + bmi goback + nop + ;; ;; Handle the communication ;; diff --git a/arch/cris/arch-v10/kernel/process.c b/arch/cris/arch-v10/kernel/process.c index 87ff37790827..69e28b4057e8 100644 --- a/arch/cris/arch-v10/kernel/process.c +++ b/arch/cris/arch-v10/kernel/process.c @@ -1,4 +1,4 @@ -/* $Id: process.c,v 1.9 2004/10/19 13:07:37 starvik Exp $ +/* $Id: process.c,v 1.12 2004/12/27 11:18:32 starvik Exp $ * * linux/arch/cris/kernel/process.c * @@ -101,6 +101,7 @@ int kernel_thread(int (*fn)(void *), void * arg, unsigned long flags) regs.r11 = (unsigned long)fn; regs.r12 = (unsigned long)arg; regs.irp = (unsigned long)kernel_thread_helper; + regs.dccr = 1 << I_DCCR_BITNR; /* Ok, create the new process.. */ return do_fork(flags | CLONE_VM | CLONE_UNTRACED, 0, ®s, 0, NULL, NULL); |
