diff options
| -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 | ||||
| -rw-r--r-- | arch/cris/kernel/crisksyms.c | 21 | ||||
| -rw-r--r-- | arch/cris/kernel/setup.c | 26 | ||||
| -rw-r--r-- | include/asm-cris/arch-v10/system.h | 2 | ||||
| -rw-r--r-- | include/asm-cris/axisflashmap.h | 3 |
9 files changed, 121 insertions, 60 deletions
diff --git a/arch/cris/arch-v10/boot/compressed/head.S b/arch/cris/arch-v10/boot/compressed/head.S index 4cbdd4b1d9d..e73f44c998d 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 8689ea972c4..addb2194de0 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 1bc44f481c3..c0163bf94a5 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 7d368c877ee..b72e6a91a63 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 87ff3779082..69e28b4057e 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); diff --git a/arch/cris/kernel/crisksyms.c b/arch/cris/kernel/crisksyms.c index 7141bbecd7e..85833d704eb 100644 --- a/arch/cris/kernel/crisksyms.c +++ b/arch/cris/kernel/crisksyms.c @@ -27,13 +27,13 @@ extern void __Udiv(void); extern void __Umod(void); extern void __Div(void); extern void __Mod(void); +extern void __ashldi3(void); extern void __ashrdi3(void); -extern void iounmap(void *addr); +extern void __lshrdi3(void); +extern void iounmap(volatile void * __iomem); /* Platform dependent support */ EXPORT_SYMBOL(dump_thread); -EXPORT_SYMBOL(enable_irq); -EXPORT_SYMBOL(disable_irq); EXPORT_SYMBOL(kernel_thread); EXPORT_SYMBOL(get_cmos_time); EXPORT_SYMBOL(loops_per_usec); @@ -57,7 +57,9 @@ EXPORT_SYMBOL(__Udiv); EXPORT_SYMBOL(__Umod); EXPORT_SYMBOL(__Div); EXPORT_SYMBOL(__Mod); +EXPORT_SYMBOL(__ashldi3); EXPORT_SYMBOL(__ashrdi3); +EXPORT_SYMBOL(__lshrdi3); /* Memory functions */ EXPORT_SYMBOL(__ioremap); @@ -69,23 +71,10 @@ EXPORT_SYMBOL(__down); EXPORT_SYMBOL(__down_interruptible); EXPORT_SYMBOL(__down_trylock); -/* Export shadow registers for the CPU I/O pins */ -EXPORT_SYMBOL(genconfig_shadow); -EXPORT_SYMBOL(port_pa_data_shadow); -EXPORT_SYMBOL(port_pa_dir_shadow); -EXPORT_SYMBOL(port_pb_data_shadow); -EXPORT_SYMBOL(port_pb_dir_shadow); -EXPORT_SYMBOL(port_pb_config_shadow); -EXPORT_SYMBOL(port_g_data_shadow); - /* Userspace access functions */ EXPORT_SYMBOL(__copy_user_zeroing); EXPORT_SYMBOL(__copy_user); -/* Cache flush functions */ -EXPORT_SYMBOL(flush_etrax_cache); -EXPORT_SYMBOL(prepare_rx_descriptor); - #undef memcpy #undef memset extern void * memset(void *, int, __kernel_size_t); diff --git a/arch/cris/kernel/setup.c b/arch/cris/kernel/setup.c index 6ec2671078b..d11206e467a 100644 --- a/arch/cris/kernel/setup.c +++ b/arch/cris/kernel/setup.c @@ -17,6 +17,7 @@ #include <asm/pgtable.h> #include <linux/seq_file.h> #include <linux/tty.h> +#include <linux/utsname.h> #include <asm/setup.h> @@ -29,7 +30,7 @@ struct screen_info screen_info; extern int root_mountflags; extern char _etext, _edata, _end; -static char command_line[COMMAND_LINE_SIZE] = { 0, }; +char cris_command_line[COMMAND_LINE_SIZE] = { 0, }; extern const unsigned long text_start, edata; /* set by the linker script */ extern unsigned long dram_start, dram_end; @@ -147,34 +148,35 @@ setup_arch(char **cmdline_p) paging_init(); - /* We don't use a command line yet, so just re-initialize it without - saving anything that might be there. */ - - *cmdline_p = command_line; + *cmdline_p = cris_command_line; #ifdef CONFIG_ETRAX_CMDLINE - strlcpy(command_line, CONFIG_ETRAX_CMDLINE, COMMAND_LINE_SIZE); - command_line[COMMAND_LINE_SIZE - 1] = '\0'; + if (!strcmp(cris_command_line, "")) { + strlcpy(cris_command_line, CONFIG_ETRAX_CMDLINE, COMMAND_LINE_SIZE); + cris_command_line[COMMAND_LINE_SIZE - 1] = '\0'; + } +#endif /* Save command line for future references. */ - memcpy(saved_command_line, command_line, COMMAND_LINE_SIZE); + memcpy(saved_command_line, cris_command_line, COMMAND_LINE_SIZE); saved_command_line[COMMAND_LINE_SIZE - 1] = '\0'; -#endif /* give credit for the CRIS port */ show_etrax_copyright(); + + /* Setup utsname */ + strcpy(system_utsname.machine, cris_machine_name); } static void *c_start(struct seq_file *m, loff_t *pos) { - /* We only got one CPU... */ - return *pos < 1 ? (void *)1 : NULL; + return *pos < NR_CPUS ? (void *)(int)(*pos + 1): NULL; } static void *c_next(struct seq_file *m, void *v, loff_t *pos) { ++*pos; - return NULL; + return c_start(m, pos); } static void c_stop(struct seq_file *m, void *v) diff --git a/include/asm-cris/arch-v10/system.h b/include/asm-cris/arch-v10/system.h index 781ca30229a..6cc35642b8a 100644 --- a/include/asm-cris/arch-v10/system.h +++ b/include/asm-cris/arch-v10/system.h @@ -11,6 +11,8 @@ extern inline unsigned long rdvr(void) { return vr; } +#define cris_machine_name "cris" + /* read/write the user-mode stackpointer */ extern inline unsigned long rdusp(void) { diff --git a/include/asm-cris/axisflashmap.h b/include/asm-cris/axisflashmap.h index 600bb8715d8..7a8d3114e68 100644 --- a/include/asm-cris/axisflashmap.h +++ b/include/asm-cris/axisflashmap.h @@ -40,4 +40,7 @@ struct partitiontable_entry { #define PARTITION_TYPE_KERNEL 0x0002 #define PARTITION_TYPE_JFFS 0x0003 +/* The master mtd for the entire flash. */ +extern struct mtd_info* axisflash_mtd; + #endif |