diff options
Diffstat (limited to 'arch/h8300/platform/h8300h/aki3068net')
-rw-r--r-- | arch/h8300/platform/h8300h/aki3068net/Makefile | 6 | ||||
-rw-r--r-- | arch/h8300/platform/h8300h/aki3068net/crt0_ram.S | 111 | ||||
-rw-r--r-- | arch/h8300/platform/h8300h/aki3068net/timer.c | 52 |
3 files changed, 169 insertions, 0 deletions
diff --git a/arch/h8300/platform/h8300h/aki3068net/Makefile b/arch/h8300/platform/h8300h/aki3068net/Makefile new file mode 100644 index 000000000000..b03c328f8c70 --- /dev/null +++ b/arch/h8300/platform/h8300h/aki3068net/Makefile @@ -0,0 +1,6 @@ +# +# Makefile for the linux kernel. +# + +extra-y := crt0_ram.o +obj-y := timer.o diff --git a/arch/h8300/platform/h8300h/aki3068net/crt0_ram.S b/arch/h8300/platform/h8300h/aki3068net/crt0_ram.S new file mode 100644 index 000000000000..31c3703d8d60 --- /dev/null +++ b/arch/h8300/platform/h8300h/aki3068net/crt0_ram.S @@ -0,0 +1,111 @@ +/* + * linux/arch/h8300/platform/h8300h/aki3068net/crt0_ram.S + * + * Yoshinori Sato <ysato@users.sourceforge.jp> + * + * Platform depend startup + * Target Archtecture: AE-3068 (aka. aki3068net) + * Memory Layout : RAM + */ + +#define ASSEMBLY + +#include <linux/config.h> +#include <asm/linkage.h> + +#if !defined(CONFIG_BLKDEV_RESERVE) +#if defined(CONFIG_GDB_DEBUG) +#define RAMEND (__ramend - 0xc000) +#else +#define RAMEND __ramend +#endif +#else +#define RAMEND CONFIG_BLKDEV_RESERVE_ADDRESS +#endif + + .global SYMBOL_NAME(_start) + .global SYMBOL_NAME(command_line) + .global SYMBOL_NAME(_platform_gpio_table) + .global SYMBOL_NAME(_target_name) + + .h8300h + + .section .text + .file "crt0_ram.S" + + /* CPU Reset entry */ +SYMBOL_NAME_LABEL(_start) + mov.l #RAMEND,sp + ldc #0x80,ccr + + /* Peripheral Setup */ + +#if defined(CONFIG_MTD_UCLINUX) + /* move romfs image */ + jsr @__move_romfs +#endif + + /* .bss clear */ + mov.l #__sbss,er5 + mov.l #__ebss,er4 + sub.l er5,er4 + shlr er4 + shlr er4 + sub.l er0,er0 +1: + mov.l er0,@er5 + adds #4,er5 + dec.l #1,er4 + bne 1b + + /* copy kernel commandline */ + mov.l #COMMAND_START,er5 + mov.l #SYMBOL_NAME(command_line),er6 + mov.w #512,r4 + eepmov.w + + /* uClinux kernel start */ + ldc #0x90,ccr /* running kernel */ + mov.l #SYMBOL_NAME(init_thread_union),sp + add.l #0x2000,sp + jsr @_start_kernel +_exit: + + jmp _exit + + rts + + /* I/O port assign information */ +__platform_gpio_table: + mov.l #gpio_table,er0 + rts + +gpio_table: + ;; P1DDR + .byte 0xff,0xff + ;; P2DDR + .byte 0xff,0xff + ;; P3DDR + .byte 0xff,0x00 + ;; P4DDR + .byte 0x00,0x00 + ;; P5DDR + .byte 0x01,0x01 + ;; P6DDR + .byte 0x00,0x00 + ;; dummy + .byte 0x00,0x00 + ;; P8DDR + .byte 0x0c,0x0c + ;; P9DDR + .byte 0x00,0x00 + ;; PADDR + .byte 0x00,0x00 + ;; PBDDR + .byte 0x30,0x30 + +__target_name: + .asciz "AE-3068" + + .section .bootvec,"ax" + jmp @SYMBOL_NAME(_start) diff --git a/arch/h8300/platform/h8300h/aki3068net/timer.c b/arch/h8300/platform/h8300h/aki3068net/timer.c new file mode 100644 index 000000000000..086efb1fd283 --- /dev/null +++ b/arch/h8300/platform/h8300h/aki3068net/timer.c @@ -0,0 +1,52 @@ +/* + * linux/arch/h8300/platform/h8300h/aki3068net/timer.c + * + * Yoshinori Sato <ysato@users.sourcefoge.jp> + * + * Platform depend Timer Handler + * + */ + +#include <linux/config.h> +#include <linux/errno.h> +#include <linux/sched.h> +#include <linux/kernel.h> +#include <linux/param.h> +#include <linux/string.h> +#include <linux/mm.h> +#include <linux/interrupt.h> +#include <linux/init.h> +#include <linux/timex.h> + +#include <asm/segment.h> +#include <asm/io.h> +#include <asm/irq.h> +#include <asm/regs306x.h> + +#define CMFA 6 + +#define CMIEA 0x40 +#define CCLR_CMA 0x08 +#define CLK_DIV8192 0x03 + +#define H8300_TIMER_FREQ CONFIG_CPU_CLOCK*1000/8192 /* Timer input freq. */ + +void __init platform_timer_setup(irqreturn_t (*timer_int)(int, void *, struct pt_regs *)) +{ + /* setup 8bit timer ch2 */ + ctrl_outb(H8300_TIMER_FREQ / HZ, TCORA2); /* set interval */ + ctrl_outb(0x00, _8TCSR2); /* no output */ + request_irq(40, timer_int, 0, "timer", 0); + ctrl_outb(CMIEA|CCLR_CMA|CLK_DIV8192, _8TCR2); /* start count */ +} + +void platform_timer_eoi(void) +{ + *(volatile unsigned char *)_8TCSR2 &= ~(1 << CMFA); +} + +void platform_gettod(int *year, int *mon, int *day, int *hour, + int *min, int *sec) +{ + *year = *mon = *day = *hour = *min = *sec = 0; +} |