diff options
author | Wu Zhangjin <wuzhangjin@gmail.com> | 2009-07-02 17:26:08 +0200 |
---|---|---|
committer | Ralf Baechle <ralf@linux-mips.org> | 2009-09-17 20:07:47 +0200 |
commit | 8e4971175acc910eb4258df82a6bd8f2c4e4e5b5 (patch) | |
tree | 921d53308d0a8a8e9119ec6b262a01fe0ccd1fd5 /arch/mips/loongson/fuloong-2e | |
parent | MIPS: Loongson: Add oprofile support (diff) | |
download | linux-8e4971175acc910eb4258df82a6bd8f2c4e4e5b5.tar.xz linux-8e4971175acc910eb4258df82a6bd8f2c4e4e5b5.zip |
MIPS: Loongson: Change naming methods
To make source code of loongson sharable to the machines(such as gdium)
made by the other companies, we rename arch/mips/lemote to
arch/mips/loongson, asm/mach-lemote to asm/mach-loongson, and rename lm2e
to the name of the machine: fuloong-2e. accordingly, FULONG are renamed to
FULOONG2E to make it distinguishable to the future FULOONG2F. and also,
some other relative tuning is needed.
Signed-off-by: Wu Zhangjin <wuzhangjin@gmail.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/loongson/fuloong-2e')
-rw-r--r-- | arch/mips/loongson/fuloong-2e/Makefile | 13 | ||||
-rw-r--r-- | arch/mips/loongson/fuloong-2e/bonito-irq.c | 51 | ||||
-rw-r--r-- | arch/mips/loongson/fuloong-2e/cmdline.c | 52 | ||||
-rw-r--r-- | arch/mips/loongson/fuloong-2e/early_printk.c | 39 | ||||
-rw-r--r-- | arch/mips/loongson/fuloong-2e/env.c | 58 | ||||
-rw-r--r-- | arch/mips/loongson/fuloong-2e/init.c | 30 | ||||
-rw-r--r-- | arch/mips/loongson/fuloong-2e/irq.c | 111 | ||||
-rw-r--r-- | arch/mips/loongson/fuloong-2e/machtype.c | 15 | ||||
-rw-r--r-- | arch/mips/loongson/fuloong-2e/mem.c | 36 | ||||
-rw-r--r-- | arch/mips/loongson/fuloong-2e/pci.c | 83 | ||||
-rw-r--r-- | arch/mips/loongson/fuloong-2e/reset.c | 44 | ||||
-rw-r--r-- | arch/mips/loongson/fuloong-2e/time.c | 27 |
12 files changed, 559 insertions, 0 deletions
diff --git a/arch/mips/loongson/fuloong-2e/Makefile b/arch/mips/loongson/fuloong-2e/Makefile new file mode 100644 index 000000000000..feb1d6bba499 --- /dev/null +++ b/arch/mips/loongson/fuloong-2e/Makefile @@ -0,0 +1,13 @@ +# +# Makefile for Lemote Fuloong2e mini-PC board. +# + +obj-y += setup.o init.o reset.o irq.o pci.o bonito-irq.o mem.o \ + env.o cmdline.o time.o machtype.o + +# +# Early printk support +# +obj-$(CONFIG_EARLY_PRINTK) += early_printk.o + +EXTRA_CFLAGS += -Werror diff --git a/arch/mips/loongson/fuloong-2e/bonito-irq.c b/arch/mips/loongson/fuloong-2e/bonito-irq.c new file mode 100644 index 000000000000..3e31e7ad713e --- /dev/null +++ b/arch/mips/loongson/fuloong-2e/bonito-irq.c @@ -0,0 +1,51 @@ +/* + * Copyright 2001 MontaVista Software Inc. + * Author: Jun Sun, jsun@mvista.com or jsun@junsun.net + * Copyright (C) 2000, 2001 Ralf Baechle (ralf@gnu.org) + * + * Copyright (C) 2007 Lemote Inc. & Insititute of Computing Technology + * Author: Fuxin Zhang, zhangfx@lemote.com + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + */ +#include <linux/interrupt.h> + +#include <loongson.h> + +static inline void bonito_irq_enable(unsigned int irq) +{ + BONITO_INTENSET = (1 << (irq - BONITO_IRQ_BASE)); + mmiowb(); +} + +static inline void bonito_irq_disable(unsigned int irq) +{ + BONITO_INTENCLR = (1 << (irq - BONITO_IRQ_BASE)); + mmiowb(); +} + +static struct irq_chip bonito_irq_type = { + .name = "bonito_irq", + .ack = bonito_irq_disable, + .mask = bonito_irq_disable, + .mask_ack = bonito_irq_disable, + .unmask = bonito_irq_enable, +}; + +static struct irqaction dma_timeout_irqaction = { + .handler = no_action, + .name = "dma_timeout", +}; + +void bonito_irq_init(void) +{ + u32 i; + + for (i = BONITO_IRQ_BASE; i < BONITO_IRQ_BASE + 32; i++) + set_irq_chip_and_handler(i, &bonito_irq_type, handle_level_irq); + + setup_irq(BONITO_IRQ_BASE + 10, &dma_timeout_irqaction); +} diff --git a/arch/mips/loongson/fuloong-2e/cmdline.c b/arch/mips/loongson/fuloong-2e/cmdline.c new file mode 100644 index 000000000000..75f1b243ee4e --- /dev/null +++ b/arch/mips/loongson/fuloong-2e/cmdline.c @@ -0,0 +1,52 @@ +/* + * Based on Ocelot Linux port, which is + * Copyright 2001 MontaVista Software Inc. + * Author: jsun@mvista.com or jsun@junsun.net + * + * Copyright 2003 ICT CAS + * Author: Michael Guo <guoyi@ict.ac.cn> + * + * Copyright (C) 2007 Lemote Inc. & Insititute of Computing Technology + * Author: Fuxin Zhang, zhangfx@lemote.com + * + * Copyright (C) 2009 Lemote Inc. & Insititute of Computing Technology + * Author: Wu Zhangjin, wuzj@lemote.com + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + */ +#include <asm/bootinfo.h> + +#include <loongson.h> + +int prom_argc; +/* pmon passes arguments in 32bit pointers */ +int *_prom_argv; + +void __init prom_init_cmdline(void) +{ + int i; + long l; + + /* firmware arguments are initialized in head.S */ + prom_argc = fw_arg0; + _prom_argv = (int *)fw_arg1; + + /* arg[0] is "g", the rest is boot parameters */ + arcs_cmdline[0] = '\0'; + for (i = 1; i < prom_argc; i++) { + l = (long)_prom_argv[i]; + if (strlen(arcs_cmdline) + strlen(((char *)l) + 1) + >= sizeof(arcs_cmdline)) + break; + strcat(arcs_cmdline, ((char *)l)); + strcat(arcs_cmdline, " "); + } + + if ((strstr(arcs_cmdline, "console=")) == NULL) + strcat(arcs_cmdline, " console=ttyS0,115200"); + if ((strstr(arcs_cmdline, "root=")) == NULL) + strcat(arcs_cmdline, " root=/dev/hda1"); +} diff --git a/arch/mips/loongson/fuloong-2e/early_printk.c b/arch/mips/loongson/fuloong-2e/early_printk.c new file mode 100644 index 000000000000..3e0a6eaa4041 --- /dev/null +++ b/arch/mips/loongson/fuloong-2e/early_printk.c @@ -0,0 +1,39 @@ +/* early printk support + * + * Copyright (c) 2009 Philippe Vachon <philippe@cowpig.ca> + * Copyright (C) 2009 Lemote Inc. & Insititute of Computing Technology + * Author: Wu Zhangjin, wuzj@lemote.com + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + */ +#include <linux/serial_reg.h> + +#include <loongson.h> + +#define UART_BASE (BONITO_PCIIO_BASE + 0x3f8) + +#define PORT(base, offset) (u8 *)(base + offset) + +static inline unsigned int serial_in(phys_addr_t base, int offset) +{ + return readb(PORT(base, offset)); +} + +static inline void serial_out(phys_addr_t base, int offset, int value) +{ + writeb(value, PORT(base, offset)); +} + +void prom_putchar(char c) +{ + phys_addr_t uart_base = + (phys_addr_t) ioremap_nocache(UART_BASE, 8); + + while ((serial_in(uart_base, UART_LSR) & UART_LSR_THRE) == 0) + ; + + serial_out(uart_base, UART_TX, c); +} diff --git a/arch/mips/loongson/fuloong-2e/env.c b/arch/mips/loongson/fuloong-2e/env.c new file mode 100644 index 000000000000..b9ef50385541 --- /dev/null +++ b/arch/mips/loongson/fuloong-2e/env.c @@ -0,0 +1,58 @@ +/* + * Based on Ocelot Linux port, which is + * Copyright 2001 MontaVista Software Inc. + * Author: jsun@mvista.com or jsun@junsun.net + * + * Copyright 2003 ICT CAS + * Author: Michael Guo <guoyi@ict.ac.cn> + * + * Copyright (C) 2007 Lemote Inc. & Insititute of Computing Technology + * Author: Fuxin Zhang, zhangfx@lemote.com + * + * Copyright (C) 2009 Lemote Inc. & Insititute of Computing Technology + * Author: Wu Zhangjin, wuzj@lemote.com + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + */ +#include <asm/bootinfo.h> + +#include <loongson.h> + +unsigned long bus_clock, cpu_clock_freq; +unsigned long memsize, highmemsize; + +/* pmon passes arguments in 32bit pointers */ +int *_prom_envp; + +#define parse_even_earlier(res, option, p) \ +do { \ + if (strncmp(option, (char *)p, strlen(option)) == 0) \ + strict_strtol((char *)p + strlen(option"="), \ + 10, &res); \ +} while (0) + +void __init prom_init_env(void) +{ + long l; + + /* firmware arguments are initialized in head.S */ + _prom_envp = (int *)fw_arg2; + + l = (long)*_prom_envp; + while (l != 0) { + parse_even_earlier(bus_clock, "busclock", l); + parse_even_earlier(cpu_clock_freq, "cpuclock", l); + parse_even_earlier(memsize, "memsize", l); + parse_even_earlier(highmemsize, "highmemsize", l); + _prom_envp++; + l = (long)*_prom_envp; + } + if (memsize == 0) + memsize = 256; + + pr_info("busclock=%ld, cpuclock=%ld, memsize=%ld, highmemsize=%ld\n", + bus_clock, cpu_clock_freq, memsize, highmemsize); +} diff --git a/arch/mips/loongson/fuloong-2e/init.c b/arch/mips/loongson/fuloong-2e/init.c new file mode 100644 index 000000000000..3abe927422a3 --- /dev/null +++ b/arch/mips/loongson/fuloong-2e/init.c @@ -0,0 +1,30 @@ +/* + * Copyright (C) 2009 Lemote Inc. & Insititute of Computing Technology + * Author: Wu Zhangjin, wuzj@lemote.com + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + */ + +#include <linux/bootmem.h> + +#include <asm/bootinfo.h> + +#include <loongson.h> + +void __init prom_init(void) +{ + /* init base address of io space */ + set_io_port_base((unsigned long) + ioremap(BONITO_PCIIO_BASE, BONITO_PCIIO_SIZE)); + + prom_init_cmdline(); + prom_init_env(); + prom_init_memory(); +} + +void __init prom_free_prom_memory(void) +{ +} diff --git a/arch/mips/loongson/fuloong-2e/irq.c b/arch/mips/loongson/fuloong-2e/irq.c new file mode 100644 index 000000000000..9585f5aa7cce --- /dev/null +++ b/arch/mips/loongson/fuloong-2e/irq.c @@ -0,0 +1,111 @@ +/* + * Copyright (C) 2007 Lemote Inc. & Insititute of Computing Technology + * Author: Fuxin Zhang, zhangfx@lemote.com + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + */ +#include <linux/delay.h> +#include <linux/interrupt.h> + +#include <asm/irq_cpu.h> +#include <asm/i8259.h> + +#include <loongson.h> +/* + * the first level int-handler will jump here if it is a bonito irq + */ +static void bonito_irqdispatch(void) +{ + u32 int_status; + int i; + + /* workaround the IO dma problem: let cpu looping to allow DMA finish */ + int_status = BONITO_INTISR; + if (int_status & (1 << 10)) { + while (int_status & (1 << 10)) { + udelay(1); + int_status = BONITO_INTISR; + } + } + + /* Get pending sources, masked by current enables */ + int_status = BONITO_INTISR & BONITO_INTEN; + + if (int_status != 0) { + i = __ffs(int_status); + int_status &= ~(1 << i); + do_IRQ(BONITO_IRQ_BASE + i); + } +} + +static void i8259_irqdispatch(void) +{ + int irq; + + irq = i8259_irq(); + if (irq >= 0) + do_IRQ(irq); + else + spurious_interrupt(); +} + +asmlinkage void plat_irq_dispatch(void) +{ + unsigned int pending = read_c0_cause() & read_c0_status() & ST0_IM; + + if (pending & CAUSEF_IP7) + do_IRQ(MIPS_CPU_IRQ_BASE + 7); + else if (pending & CAUSEF_IP6) /* perf counter loverflow */ + do_IRQ(LOONGSON2_PERFCNT_IRQ); + else if (pending & CAUSEF_IP5) + i8259_irqdispatch(); + else if (pending & CAUSEF_IP2) + bonito_irqdispatch(); + else + spurious_interrupt(); +} + +static struct irqaction cascade_irqaction = { + .handler = no_action, + .name = "cascade", +}; + +void __init arch_init_irq(void) +{ + /* + * Clear all of the interrupts while we change the able around a bit. + * int-handler is not on bootstrap + */ + clear_c0_status(ST0_IM | ST0_BEV); + local_irq_disable(); + + /* most bonito irq should be level triggered */ + BONITO_INTEDGE = BONITO_ICU_SYSTEMERR | BONITO_ICU_MASTERERR | + BONITO_ICU_RETRYERR | BONITO_ICU_MBOXES; + BONITO_INTSTEER = 0; + + /* + * Mask out all interrupt by writing "1" to all bit position in + * the interrupt reset reg. + */ + BONITO_INTENCLR = ~0; + + /* init all controller + * 0-15 ------> i8259 interrupt + * 16-23 ------> mips cpu interrupt + * 32-63 ------> bonito irq + */ + + /* Sets the first-level interrupt dispatcher. */ + mips_cpu_irq_init(); + init_i8259_irqs(); + bonito_irq_init(); + + /* bonito irq at IP2 */ + setup_irq(MIPS_CPU_IRQ_BASE + 2, &cascade_irqaction); + /* 8259 irq at IP5 */ + setup_irq(MIPS_CPU_IRQ_BASE + 5, &cascade_irqaction); +} diff --git a/arch/mips/loongson/fuloong-2e/machtype.c b/arch/mips/loongson/fuloong-2e/machtype.c new file mode 100644 index 000000000000..e03aa0de6176 --- /dev/null +++ b/arch/mips/loongson/fuloong-2e/machtype.c @@ -0,0 +1,15 @@ +/* + * Copyright (C) 2009 Lemote Inc. & Insititute of Computing Technology + * Author: Wu Zhangjin, wuzj@lemote.com + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + */ + +const char *get_system_type(void) +{ + return "lemote-fuloong-2e-box"; +} + diff --git a/arch/mips/loongson/fuloong-2e/mem.c b/arch/mips/loongson/fuloong-2e/mem.c new file mode 100644 index 000000000000..6a7feb178fa5 --- /dev/null +++ b/arch/mips/loongson/fuloong-2e/mem.c @@ -0,0 +1,36 @@ +/* + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + */ +#include <linux/fs.h> +#include <linux/fcntl.h> +#include <linux/mm.h> + +#include <asm/bootinfo.h> + +#include <loongson.h> + +void __init prom_init_memory(void) +{ + add_memory_region(0x0, (memsize << 20), BOOT_MEM_RAM); +#ifdef CONFIG_64BIT + if (highmemsize > 0) + add_memory_region(0x20000000, highmemsize << 20, BOOT_MEM_RAM); +#endif /* CONFIG_64BIT */ +} + +/* override of arch/mips/mm/cache.c: __uncached_access */ +int __uncached_access(struct file *file, unsigned long addr) +{ + if (file->f_flags & O_SYNC) + return 1; + + /* + * On the Lemote Loongson 2e system, the peripheral registers + * reside between 0x1000:0000 and 0x2000:0000. + */ + return addr >= __pa(high_memory) || + ((addr >= 0x10000000) && (addr < 0x20000000)); +} diff --git a/arch/mips/loongson/fuloong-2e/pci.c b/arch/mips/loongson/fuloong-2e/pci.c new file mode 100644 index 000000000000..9812c30cc6eb --- /dev/null +++ b/arch/mips/loongson/fuloong-2e/pci.c @@ -0,0 +1,83 @@ +/* + * Copyright (C) 2007 Lemote, Inc. & Institute of Computing Technology + * Author: Fuxin Zhang, zhangfx@lemote.com + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + */ +#include <linux/pci.h> + +#include <pci.h> +#include <loongson.h> + +static struct resource loongson2e_pci_mem_resource = { + .name = "LOONGSON2E PCI MEM", + .start = LOONGSON2E_PCI_MEM_START, + .end = LOONGSON2E_PCI_MEM_END, + .flags = IORESOURCE_MEM, +}; + +static struct resource loongson2e_pci_io_resource = { + .name = "LOONGSON2E PCI IO MEM", + .start = LOONGSON2E_PCI_IO_START, + .end = IO_SPACE_LIMIT, + .flags = IORESOURCE_IO, +}; + +static struct pci_controller loongson2e_pci_controller = { + .pci_ops = &bonito64_pci_ops, + .io_resource = &loongson2e_pci_io_resource, + .mem_resource = &loongson2e_pci_mem_resource, + .mem_offset = 0x00000000UL, + .io_offset = 0x00000000UL, +}; + +static void __init setup_pcimap(void) +{ + /* + * local to PCI mapping for CPU accessing PCI space + * CPU address space [256M,448M] is window for accessing pci space + * we set pcimap_lo[0,1,2] to map it to pci space[0M,64M], [320M,448M] + * + * pcimap: PCI_MAP2 PCI_Mem_Lo2 PCI_Mem_Lo1 PCI_Mem_Lo0 + * [<2G] [384M,448M] [320M,384M] [0M,64M] + */ + BONITO_PCIMAP = BONITO_PCIMAP_PCIMAP_2 | + BONITO_PCIMAP_WIN(2, BONITO_PCILO2_BASE) | + BONITO_PCIMAP_WIN(1, BONITO_PCILO1_BASE) | + BONITO_PCIMAP_WIN(0, 0); + + /* + * PCI-DMA to local mapping: [2G,2G+256M] -> [0M,256M] + */ + BONITO_PCIBASE0 = 0x80000000ul; /* base: 2G -> mmap: 0M */ + /* size: 256M, burst transmission, pre-fetch enable, 64bit */ + LOONGSON_PCI_HIT0_SEL_L = 0xc000000cul; + LOONGSON_PCI_HIT0_SEL_H = 0xfffffffful; + LOONGSON_PCI_HIT1_SEL_L = 0x00000006ul; /* set this BAR as invalid */ + LOONGSON_PCI_HIT1_SEL_H = 0x00000000ul; + LOONGSON_PCI_HIT2_SEL_L = 0x00000006ul; /* set this BAR as invalid */ + LOONGSON_PCI_HIT2_SEL_H = 0x00000000ul; + + /* avoid deadlock of PCI reading/writing lock operation */ + LOONGSON_PCI_ISR4C = 0xd2000001ul; + + /* can not change gnt to break pci transfer when device's gnt not + deassert for some broken device */ + LOONGSON_PXARB_CFG = 0x00fe0105ul; +} + +static int __init pcibios_init(void) +{ + setup_pcimap(); + + loongson2e_pci_controller.io_map_base = mips_io_port_base; + + register_pci_controller(&loongson2e_pci_controller); + + return 0; +} + +arch_initcall(pcibios_init); diff --git a/arch/mips/loongson/fuloong-2e/reset.c b/arch/mips/loongson/fuloong-2e/reset.c new file mode 100644 index 000000000000..c21299af7f64 --- /dev/null +++ b/arch/mips/loongson/fuloong-2e/reset.c @@ -0,0 +1,44 @@ +/* + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + * + * Copyright (C) 2007 Lemote, Inc. & Institute of Computing Technology + * Author: Fuxin Zhang, zhangfx@lemote.com + * Copyright (C) 2009 Lemote, Inc. & Institute of Computing Technology + * Author: Zhangjin Wu, wuzj@lemote.com + */ +#include <linux/init.h> +#include <linux/pm.h> + +#include <asm/reboot.h> + +#include <loongson.h> + +static void loongson2e_restart(char *command) +{ + /* do preparation for reboot */ + BONITO_BONGENCFG &= ~(1 << 2); + BONITO_BONGENCFG |= (1 << 2); + + /* reboot via jumping to boot base address */ + ((void (*)(void))ioremap_nocache(BONITO_BOOT_BASE, 4)) (); +} + +static void loongson2e_halt(void) +{ + while (1) + ; +} + +static int __init mips_reboot_setup(void) +{ + _machine_restart = loongson2e_restart; + _machine_halt = loongson2e_halt; + pm_power_off = loongson2e_halt; + + return 0; +} + +arch_initcall(mips_reboot_setup); diff --git a/arch/mips/loongson/fuloong-2e/time.c b/arch/mips/loongson/fuloong-2e/time.c new file mode 100644 index 000000000000..b13d17174654 --- /dev/null +++ b/arch/mips/loongson/fuloong-2e/time.c @@ -0,0 +1,27 @@ +/* + * Copyright (C) 2007 Lemote, Inc. & Institute of Computing Technology + * Author: Fuxin Zhang, zhangfx@lemote.com + * + * Copyright (C) 2009 Lemote Inc. & Insititute of Computing Technology + * Author: Wu Zhangjin, wuzj@lemote.com + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + */ +#include <asm/mc146818-time.h> +#include <asm/time.h> + +#include <loongson.h> + +void __init plat_time_init(void) +{ + /* setup mips r4k timer */ + mips_hpt_frequency = cpu_clock_freq / 2; +} + +unsigned long read_persistent_clock(void) +{ + return mc146818_get_cmos_time(); +} |