* Start threads with IRQs enabled.
* Move symbol exports to arch specific file.
* Prepare for real command line in the future.
* Handle csum for partition that crosses flash boundary.
* Set utsname.
Signed-off-by: Mikael Starvik <starvik@axis.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
#include <asm/arch/sv_addr_ag.h>
#define RAM_INIT_MAGIC 0x56902387
-
+#define COMMAND_LINE_MAGIC 0x87109563
+
;; Exported symbols
.globl _input_data
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
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
_input_data:
.dword 0 ; used by the decompressor
-
+_cmd_line_magic:
+ .dword 0
+_cmd_line_addr:
+ .dword 0
#include "../../lib/hw_settings.S"
-/* $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
;; 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
;; 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
-/* $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
*
* 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
*
#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
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
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
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
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.
.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
*! 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
*!
*!
*!---------------------------------------------------------------------------
*!
-*! $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
*!
#include <linux/kernel.h>
#include <linux/delay.h>
#include <linux/linkage.h>
+#include <linux/reboot.h>
#include <asm/setup.h>
#include <asm/ptrace.h>
}
}
-/* 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 *******************************/
bne goback
nop
+ move.d [reg+0x5E], $r10 ; Get DCCR
+ btstq 8, $r10 ; Test the U-flag.
+ bmi goback
+ nop
+
;;
;; Handle the communication
;;
-/* $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
*
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);
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);
EXPORT_SYMBOL(__Umod);
EXPORT_SYMBOL(__Div);
EXPORT_SYMBOL(__Mod);
+EXPORT_SYMBOL(__ashldi3);
EXPORT_SYMBOL(__ashrdi3);
+EXPORT_SYMBOL(__lshrdi3);
/* Memory functions */
EXPORT_SYMBOL(__ioremap);
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);
#include <asm/pgtable.h>
#include <linux/seq_file.h>
#include <linux/tty.h>
+#include <linux/utsname.h>
#include <asm/setup.h>
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;
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)
return vr;
}
+#define cris_machine_name "cris"
+
/* read/write the user-mode stackpointer */
extern inline unsigned long rdusp(void) {
#define PARTITION_TYPE_KERNEL 0x0002
#define PARTITION_TYPE_JFFS 0x0003
+/* The master mtd for the entire flash. */
+extern struct mtd_info* axisflash_mtd;
+
#endif
projects / GitHub / LineageOS / android_kernel_motorola_exynos9610.git / commitdiff