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author | Thomas Gleixner <tglx@mtd.linutronix.de> | 2005-11-06 15:36:37 +0100 |
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committer | Thomas Gleixner <tglx@mtd.linutronix.de> | 2005-11-06 15:36:37 +0100 |
commit | 2fc2991175bf77395e6b15fe6b2304d3bf72da40 (patch) | |
tree | b0ff38c09240e7c00e1577d447ebe89143d752dc /arch/mips/qemu | |
parent | [MTD] mtdchar: Return EINVAL for bad seeks instead of fixing up to valid byte (diff) | |
parent | [PATCH] nvidiafb: Geforce 7800 series support added (diff) | |
download | linux-dev-2fc2991175bf77395e6b15fe6b2304d3bf72da40.tar.xz linux-dev-2fc2991175bf77395e6b15fe6b2304d3bf72da40.zip |
Merge branch 'master' of /home/tglx/work/mtd/git/linux-2.6.git/
Diffstat (limited to 'arch/mips/qemu')
-rw-r--r-- | arch/mips/qemu/Makefile | 5 | ||||
-rw-r--r-- | arch/mips/qemu/q-firmware.c | 7 | ||||
-rw-r--r-- | arch/mips/qemu/q-int.S | 17 | ||||
-rw-r--r-- | arch/mips/qemu/q-irq.c | 37 | ||||
-rw-r--r-- | arch/mips/qemu/q-mem.c | 6 | ||||
-rw-r--r-- | arch/mips/qemu/q-setup.c | 25 |
6 files changed, 97 insertions, 0 deletions
diff --git a/arch/mips/qemu/Makefile b/arch/mips/qemu/Makefile new file mode 100644 index 000000000000..934944ab9e85 --- /dev/null +++ b/arch/mips/qemu/Makefile @@ -0,0 +1,5 @@ +# +# Makefile for Qemu specific kernel interface routines under Linux. +# + +obj-y = q-firmware.o q-int.o q-irq.o q-mem.o q-setup.o diff --git a/arch/mips/qemu/q-firmware.c b/arch/mips/qemu/q-firmware.c new file mode 100644 index 000000000000..5980f02b2df9 --- /dev/null +++ b/arch/mips/qemu/q-firmware.c @@ -0,0 +1,7 @@ +#include <linux/init.h> +#include <asm/bootinfo.h> + +void __init prom_init(void) +{ + add_memory_region(0x0<<20, 0x10<<20, BOOT_MEM_RAM); +} diff --git a/arch/mips/qemu/q-int.S b/arch/mips/qemu/q-int.S new file mode 100644 index 000000000000..6e3dfe5eb14b --- /dev/null +++ b/arch/mips/qemu/q-int.S @@ -0,0 +1,17 @@ +/* + * Qemu interrupt handler code. + * + * Copyright (C) 2005 by Ralf Baechle + */ +#include <asm/asm.h> +#include <asm/regdef.h> +#include <asm/stackframe.h> + + .align 5 + NESTED(qemu_handle_int, PT_SIZE, sp) + SAVE_ALL + CLI + move a0, sp + PTR_LA ra, ret_from_irq + j do_qemu_int + END(qemu_handle_int) diff --git a/arch/mips/qemu/q-irq.c b/arch/mips/qemu/q-irq.c new file mode 100644 index 000000000000..2c4e0704ff10 --- /dev/null +++ b/arch/mips/qemu/q-irq.c @@ -0,0 +1,37 @@ +#include <linux/init.h> +#include <linux/linkage.h> + +#include <asm/i8259.h> +#include <asm/mipsregs.h> +#include <asm/qemu.h> +#include <asm/system.h> +#include <asm/time.h> + +extern asmlinkage void qemu_handle_int(void); + +asmlinkage void do_qemu_int(struct pt_regs *regs) +{ + unsigned int pending = read_c0_status() & read_c0_cause(); + + if (pending & 0x8000) { + ll_timer_interrupt(Q_COUNT_COMPARE_IRQ, regs); + return; + } + if (pending & 0x0400) { + int irq = i8259_irq(); + + if (likely(irq >= 0)) + do_IRQ(irq, regs); + + return; + } +} + +void __init arch_init_irq(void) +{ + set_except_vector(0, qemu_handle_int); + mips_hpt_frequency = QEMU_C0_COUNTER_CLOCK; /* 100MHz */ + + init_i8259_irqs(); + set_c0_status(0x8400); +} diff --git a/arch/mips/qemu/q-mem.c b/arch/mips/qemu/q-mem.c new file mode 100644 index 000000000000..d174fac43031 --- /dev/null +++ b/arch/mips/qemu/q-mem.c @@ -0,0 +1,6 @@ +#include <linux/init.h> + +unsigned long __init prom_free_prom_memory(void) +{ + return 0UL; +} diff --git a/arch/mips/qemu/q-setup.c b/arch/mips/qemu/q-setup.c new file mode 100644 index 000000000000..022eb1af6db1 --- /dev/null +++ b/arch/mips/qemu/q-setup.c @@ -0,0 +1,25 @@ +#include <linux/init.h> +#include <asm/io.h> +#include <asm/time.h> + +#define QEMU_PORT_BASE 0xb4000000 + +const char *get_system_type(void) +{ + return "Qemu"; +} + +static void __init qemu_timer_setup(struct irqaction *irq) +{ + /* set the clock to 100 Hz */ + outb_p(0x34,0x43); /* binary, mode 2, LSB/MSB, ch 0 */ + outb_p(LATCH & 0xff , 0x40); /* LSB */ + outb(LATCH >> 8 , 0x40); /* MSB */ + setup_irq(0, irq); +} + +void __init plat_setup(void) +{ + set_io_port_base(QEMU_PORT_BASE); + board_timer_setup = qemu_timer_setup; +} |