Eric Lee / linux-smarc-t335x-v3.2

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Commit 85749d24bcf90440b10394312e5b1c96d1a62cdb

Authored by Wu Zhangjin
Committed by Ralf Baechle
1 parent 8e4971175a
Exists in master and in 4 other branches v3.2_AM335xPSP_04.06.00.11, v3.2_NEWT335xPSP_04.06.00.11, v3.2_SBC_SMARTMEN, v3.2_SMARCT335xPSP_04.06.00.11

MIPS: Loongson: Split common loongson source code out 

To share common loongson source code between all of the loongson-based
machines. there is a need to split it out of the fuloong-2e/ directory.
at the same time, other according tuning is needed. the machine-specific
parts are defined as macros in relative header file, pci.h, mem.h,
machine.h.

Signed-off-by: Wu Zhangjin <wuzhangjin@gmail.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

Showing 33 changed files with 720 additions and 502 deletions Side-by-side Diff

... ... @@ -174,31 +174,16 @@
174 174 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
175 175 select SYS_SUPPORTS_LITTLE_ENDIAN
176 176  
177   -config LEMOTE_FULOONG2E
178   - bool "Lemote Fuloong2e mini-PC"
179   - select ARCH_SPARSEMEM_ENABLE
180   - select CEVT_R4K
181   - select CSRC_R4K
182   - select SYS_HAS_CPU_LOONGSON2
183   - select DMA_NONCOHERENT
184   - select BOOT_ELF32
185   - select BOARD_SCACHE
186   - select HAVE_STD_PC_SERIAL_PORT
187   - select HW_HAS_PCI
188   - select I8259
189   - select ISA
190   - select IRQ_CPU
191   - select SYS_SUPPORTS_32BIT_KERNEL
192   - select SYS_SUPPORTS_64BIT_KERNEL
193   - select SYS_SUPPORTS_LITTLE_ENDIAN
194   - select SYS_SUPPORTS_HIGHMEM
195   - select SYS_HAS_EARLY_PRINTK
196   - select GENERIC_ISA_DMA_SUPPORT_BROKEN
197   - select CPU_HAS_WB
  177 +config MACH_LOONGSON
  178 + bool "Loongson family of machines"
198 179 help
199   - Lemote Fuloong2e mini-PC board based on the Chinese Loongson-2E CPU and
200   - an FPGA northbridge
  180 + This enables the support of Loongson family of machines.
201 181  
  182 + Loongson is a family of general-purpose MIPS-compatible CPUs.
  183 + developed at Institute of Computing Technology (ICT),
  184 + Chinese Academy of Sciences (CAS) in the People's Republic
  185 + of China. The chief architect is Professor Weiwu Hu.
  186 +
202 187 config MIPS_MALTA
203 188 bool "MIPS Malta board"
204 189 select ARCH_MAY_HAVE_PC_FDC
... ... @@ -668,6 +653,7 @@
668 653 source "arch/mips/txx9/Kconfig"
669 654 source "arch/mips/vr41xx/Kconfig"
670 655 source "arch/mips/cavium-octeon/Kconfig"
  656 +source "arch/mips/loongson/Kconfig"
671 657  
672 658 endmenu
673 659  
... ... @@ -314,11 +314,12 @@
314 314 load-$(CONFIG_WR_PPMC) += 0xffffffff80100000
315 315  
316 316 #
317   -# lemote fuloong2e mini-PC board
  317 +# Loongson family
318 318 #
319   -core-$(CONFIG_LEMOTE_FULOONG2E) +=arch/mips/loongson/fuloong-2e/
  319 +core-$(CONFIG_MACH_LOONGSON) +=arch/mips/loongson/
  320 +cflags-$(CONFIG_MACH_LOONGSON) += -I$(srctree)/arch/mips/include/asm/mach-loongson \
  321 + -mno-branch-likely
320 322 load-$(CONFIG_LEMOTE_FULOONG2E) +=0xffffffff80100000
321   -cflags-$(CONFIG_LEMOTE_FULOONG2E) += -I$(srctree)/arch/mips/include/asm/mach-loongson/
322 323  
323 324 #
324 325 # MIPS Malta board
arch/mips/include/asm/mach-loongson/loongson.h
Diff comments   View file @ 85749d2
... ... @@ -21,6 +21,10 @@
21 21 /* loongson internal northbridge initialization */
22 22 extern void bonito_irq_init(void);
23 23  
  24 +/* machine-specific reboot/halt operation */
  25 +extern void mach_prepare_reboot(void);
  26 +extern void mach_prepare_shutdown(void);
  27 +
24 28 /* environment arguments from bootloader */
25 29 extern unsigned long bus_clock, cpu_clock_freq;
26 30 extern unsigned long memsize, highmemsize;
... ... @@ -29,6 +33,13 @@
29 33 extern void __init prom_init_memory(void);
30 34 extern void __init prom_init_cmdline(void);
31 35 extern void __init prom_init_env(void);
  36 +
  37 +/* irq operation functions */
  38 +extern void bonito_irqdispatch(void);
  39 +extern void __init bonito_irq_init(void);
  40 +extern void __init set_irq_trigger_mode(void);
  41 +extern void __init mach_init_irq(void);
  42 +extern void mach_irq_dispatch(unsigned int pending);
32 43  
33 44 /* PCI Configuration Registers */
34 45 #define LOONGSON_PCI_ISR4C BONITO_PCI_REG(0x4c)
arch/mips/include/asm/mach-loongson/machine.h
Diff comments   View file @ 85749d2
  1 +/*
  2 + * Copyright (C) 2009 Lemote, Inc. & Institute of Computing Technology
  3 + * Author: Wu Zhangjin <wuzj@lemote.com>
  4 + *
  5 + * This program is free software; you can redistribute it and/or modify it
  6 + * under the terms of the GNU General Public License as published by the
  7 + * Free Software Foundation; either version 2 of the License, or (at your
  8 + * option) any later version.
  9 + */
  10 +
  11 +#ifndef __ASM_MACH_LOONGSON_MACHINE_H
  12 +#define __ASM_MACH_LOONGSON_MACHINE_H
  13 +
  14 +#ifdef CONFIG_LEMOTE_FULOONG2E
  15 +
  16 +#define LOONGSON_UART_BASE (BONITO_PCIIO_BASE + 0x3f8)
  17 +
  18 +#define LOONGSON_MACHNAME "lemote-fuloong-2e-box"
  19 +
  20 +#endif
  21 +
  22 +#endif /* __ASM_MACH_LOONGSON_MACHINE_H */
arch/mips/include/asm/mach-loongson/mem.h
Diff comments   View file @ 85749d2
  1 +/*
  2 + * Copyright (C) 2009 Lemote, Inc. & Institute of Computing Technology
  3 + * Author: Wu Zhangjin <wuzj@lemote.com>
  4 + *
  5 + * This program is free software; you can redistribute it and/or modify it
  6 + * under the terms of the GNU General Public License as published by the
  7 + * Free Software Foundation; either version 2 of the License, or (at your
  8 + * option) any later version.
  9 + */
  10 +
  11 +#ifndef __ASM_MACH_LOONGSON_MEM_H
  12 +#define __ASM_MACH_LOONGSON_MEM_H
  13 +
  14 +/*
  15 + * On Lemote Loongson 2e
  16 + *
  17 + * the high memory space starts from 512M.
  18 + * the peripheral registers reside between 0x1000:0000 and 0x2000:0000.
  19 + */
  20 +
  21 +#ifdef CONFIG_LEMOTE_FULOONG2E
  22 +
  23 +#define LOONGSON_HIGHMEM_START 0x20000000
  24 +
  25 +#define LOONGSON_MMIO_MEM_START 0x10000000
  26 +#define LOONGSON_MMIO_MEM_END 0x20000000
  27 +
  28 +#endif
  29 +
  30 +#endif /* __ASM_MACH_LOONGSON_MEM_H */
arch/mips/include/asm/mach-loongson/pci.h
Diff comments   View file @ 85749d2
... ... @@ -24,9 +24,15 @@
24 24  
25 25 extern struct pci_ops bonito64_pci_ops;
26 26  
27   -#define LOONGSON2E_PCI_MEM_START BONITO_PCILO1_BASE
28   -#define LOONGSON2E_PCI_MEM_END (BONITO_PCILO1_BASE + 0x04000000 * 2)
29   -#define LOONGSON2E_PCI_IO_START 0x00004000UL
  27 +#ifdef CONFIG_LEMOTE_FULOONG2E
  28 +
  29 +/* this pci memory space is mapped by pcimap in pci.c */
  30 +#define LOONGSON_PCI_MEM_START BONITO_PCILO1_BASE
  31 +#define LOONGSON_PCI_MEM_END (BONITO_PCILO1_BASE + 0x04000000 * 2)
  32 +/* this is an offset from mips_io_port_base */
  33 +#define LOONGSON_PCI_IO_START 0x00004000UL
  34 +
  35 +#endif
30 36  
31 37 #endif /* !__ASM_MACH_LOONGSON_PCI_H_ */
arch/mips/loongson/Kconfig
Diff comments   View file @ 85749d2
  1 +choice
  2 + prompt "Machine Type"
  3 + depends on MACH_LOONGSON
  4 +
  5 +config LEMOTE_FULOONG2E
  6 + bool "Lemote Fuloong(2e) mini-PC"
  7 + select ARCH_SPARSEMEM_ENABLE
  8 + select CEVT_R4K
  9 + select CSRC_R4K
  10 + select SYS_HAS_CPU_LOONGSON2
  11 + select DMA_NONCOHERENT
  12 + select BOOT_ELF32
  13 + select BOARD_SCACHE
  14 + select HW_HAS_PCI
  15 + select I8259
  16 + select ISA
  17 + select IRQ_CPU
  18 + select SYS_SUPPORTS_32BIT_KERNEL
  19 + select SYS_SUPPORTS_64BIT_KERNEL
  20 + select SYS_SUPPORTS_LITTLE_ENDIAN
  21 + select SYS_SUPPORTS_HIGHMEM
  22 + select SYS_HAS_EARLY_PRINTK
  23 + select GENERIC_HARDIRQS_NO__DO_IRQ
  24 + select GENERIC_ISA_DMA_SUPPORT_BROKEN
  25 + select CPU_HAS_WB
  26 + help
  27 + Lemote Fuloong(2e) mini-PC board based on the Chinese Loongson-2E CPU and
  28 + an FPGA northbridge
  29 +
  30 + Lemote Fuloong(2e) mini PC have a VIA686B south bridge.
  31 +endchoice
arch/mips/loongson/Makefile
Diff comments   View file @ 85749d2
  1 +#
  2 +# Common code for all Loongson based systems
  3 +#
  4 +
  5 +obj-$(CONFIG_MACH_LOONGSON) += common/
  6 +
  7 +#
  8 +# Lemote Fuloong mini-PC (Loongson 2E-based)
  9 +#
  10 +
  11 +obj-$(CONFIG_LEMOTE_FULOONG2E) += fuloong-2e/
arch/mips/loongson/common/Makefile
Diff comments   View file @ 85749d2
  1 +#
  2 +# Makefile for loongson based machines.
  3 +#
  4 +
  5 +obj-y += setup.o init.o cmdline.o env.o time.o reset.o irq.o \
  6 + pci.o bonito-irq.o mem.o
  7 +
  8 +#
  9 +# Early printk support
  10 +#
  11 +obj-$(CONFIG_EARLY_PRINTK) += early_printk.o
arch/mips/loongson/common/bonito-irq.c
Diff comments   View file @ 85749d2
  1 +/*
  2 + * Copyright 2001 MontaVista Software Inc.
  3 + * Author: Jun Sun, jsun@mvista.com or jsun@junsun.net
  4 + * Copyright (C) 2000, 2001 Ralf Baechle (ralf@gnu.org)
  5 + *
  6 + * Copyright (C) 2007 Lemote Inc. & Insititute of Computing Technology
  7 + * Author: Fuxin Zhang, zhangfx@lemote.com
  8 + *
  9 + * This program is free software; you can redistribute it and/or modify it
  10 + * under the terms of the GNU General Public License as published by the
  11 + * Free Software Foundation; either version 2 of the License, or (at your
  12 + * option) any later version.
  13 + */
  14 +#include <linux/interrupt.h>
  15 +
  16 +#include <loongson.h>
  17 +
  18 +static inline void bonito_irq_enable(unsigned int irq)
  19 +{
  20 + BONITO_INTENSET = (1 << (irq - BONITO_IRQ_BASE));
  21 + mmiowb();
  22 +}
  23 +
  24 +static inline void bonito_irq_disable(unsigned int irq)
  25 +{
  26 + BONITO_INTENCLR = (1 << (irq - BONITO_IRQ_BASE));
  27 + mmiowb();
  28 +}
  29 +
  30 +static struct irq_chip bonito_irq_type = {
  31 + .name = "bonito_irq",
  32 + .ack = bonito_irq_disable,
  33 + .mask = bonito_irq_disable,
  34 + .mask_ack = bonito_irq_disable,
  35 + .unmask = bonito_irq_enable,
  36 +};
  37 +
  38 +static struct irqaction dma_timeout_irqaction = {
  39 + .handler = no_action,
  40 + .name = "dma_timeout",
  41 +};
  42 +
  43 +void bonito_irq_init(void)
  44 +{
  45 + u32 i;
  46 +
  47 + for (i = BONITO_IRQ_BASE; i < BONITO_IRQ_BASE + 32; i++)
  48 + set_irq_chip_and_handler(i, &bonito_irq_type, handle_level_irq);
  49 +
  50 + setup_irq(BONITO_IRQ_BASE + 10, &dma_timeout_irqaction);
  51 +}
arch/mips/loongson/common/cmdline.c
Diff comments   View file @ 85749d2
  1 +/*
  2 + * Based on Ocelot Linux port, which is
  3 + * Copyright 2001 MontaVista Software Inc.
  4 + * Author: jsun@mvista.com or jsun@junsun.net
  5 + *
  6 + * Copyright 2003 ICT CAS
  7 + * Author: Michael Guo <guoyi@ict.ac.cn>
  8 + *
  9 + * Copyright (C) 2007 Lemote Inc. & Insititute of Computing Technology
  10 + * Author: Fuxin Zhang, zhangfx@lemote.com
  11 + *
  12 + * Copyright (C) 2009 Lemote Inc. & Insititute of Computing Technology
  13 + * Author: Wu Zhangjin, wuzj@lemote.com
  14 + *
  15 + * This program is free software; you can redistribute it and/or modify it
  16 + * under the terms of the GNU General Public License as published by the
  17 + * Free Software Foundation; either version 2 of the License, or (at your
  18 + * option) any later version.
  19 + */
  20 +#include <asm/bootinfo.h>
  21 +
  22 +#include <loongson.h>
  23 +
  24 +int prom_argc;
  25 +/* pmon passes arguments in 32bit pointers */
  26 +int *_prom_argv;
  27 +
  28 +void __init prom_init_cmdline(void)
  29 +{
  30 + int i;
  31 + long l;
  32 +
  33 + /* firmware arguments are initialized in head.S */
  34 + prom_argc = fw_arg0;
  35 + _prom_argv = (int *)fw_arg1;
  36 +
  37 + /* arg[0] is "g", the rest is boot parameters */
  38 + arcs_cmdline[0] = '\0';
  39 + for (i = 1; i < prom_argc; i++) {
  40 + l = (long)_prom_argv[i];
  41 + if (strlen(arcs_cmdline) + strlen(((char *)l) + 1)
  42 + >= sizeof(arcs_cmdline))
  43 + break;
  44 + strcat(arcs_cmdline, ((char *)l));
  45 + strcat(arcs_cmdline, " ");
  46 + }
  47 +
  48 + if ((strstr(arcs_cmdline, "console=")) == NULL)
  49 + strcat(arcs_cmdline, " console=ttyS0,115200");
  50 + if ((strstr(arcs_cmdline, "root=")) == NULL)
  51 + strcat(arcs_cmdline, " root=/dev/hda1");
  52 +}
arch/mips/loongson/common/early_printk.c
Diff comments   View file @ 85749d2
  1 +/* early printk support
  2 + *
  3 + * Copyright (c) 2009 Philippe Vachon <philippe@cowpig.ca>
  4 + * Copyright (C) 2009 Lemote Inc. & Insititute of Computing Technology
  5 + * Author: Wu Zhangjin, wuzj@lemote.com
  6 + *
  7 + * This program is free software; you can redistribute it and/or modify it
  8 + * under the terms of the GNU General Public License as published by the
  9 + * Free Software Foundation; either version 2 of the License, or (at your
  10 + * option) any later version.
  11 + */
  12 +#include <linux/serial_reg.h>
  13 +
  14 +#include <loongson.h>
  15 +#include <machine.h>
  16 +
  17 +#define PORT(base, offset) (u8 *)(base + offset)
  18 +
  19 +static inline unsigned int serial_in(phys_addr_t base, int offset)
  20 +{
  21 + return readb(PORT(base, offset));
  22 +}
  23 +
  24 +static inline void serial_out(phys_addr_t base, int offset, int value)
  25 +{
  26 + writeb(value, PORT(base, offset));
  27 +}
  28 +
  29 +void prom_putchar(char c)
  30 +{
  31 + phys_addr_t uart_base =
  32 + (phys_addr_t) ioremap_nocache(LOONGSON_UART_BASE, 8);
  33 +
  34 + while ((serial_in(uart_base, UART_LSR) & UART_LSR_THRE) == 0)
  35 + ;
  36 +
  37 + serial_out(uart_base, UART_TX, c);
  38 +}
arch/mips/loongson/common/env.c
Diff comments   View file @ 85749d2
  1 +/*
  2 + * Based on Ocelot Linux port, which is
  3 + * Copyright 2001 MontaVista Software Inc.
  4 + * Author: jsun@mvista.com or jsun@junsun.net
  5 + *
  6 + * Copyright 2003 ICT CAS
  7 + * Author: Michael Guo <guoyi@ict.ac.cn>
  8 + *
  9 + * Copyright (C) 2007 Lemote Inc. & Insititute of Computing Technology
  10 + * Author: Fuxin Zhang, zhangfx@lemote.com
  11 + *
  12 + * Copyright (C) 2009 Lemote Inc. & Insititute of Computing Technology
  13 + * Author: Wu Zhangjin, wuzj@lemote.com
  14 + *
  15 + * This program is free software; you can redistribute it and/or modify it
  16 + * under the terms of the GNU General Public License as published by the
  17 + * Free Software Foundation; either version 2 of the License, or (at your
  18 + * option) any later version.
  19 + */
  20 +#include <asm/bootinfo.h>
  21 +
  22 +#include <loongson.h>
  23 +
  24 +unsigned long bus_clock, cpu_clock_freq;
  25 +unsigned long memsize, highmemsize;
  26 +
  27 +/* pmon passes arguments in 32bit pointers */
  28 +int *_prom_envp;
  29 +
  30 +#define parse_even_earlier(res, option, p) \
  31 +do { \
  32 + if (strncmp(option, (char *)p, strlen(option)) == 0) \
  33 + strict_strtol((char *)p + strlen(option"="), \
  34 + 10, &res); \
  35 +} while (0)
  36 +
  37 +void __init prom_init_env(void)
  38 +{
  39 + long l;
  40 +
  41 + /* firmware arguments are initialized in head.S */
  42 + _prom_envp = (int *)fw_arg2;
  43 +
  44 + l = (long)*_prom_envp;
  45 + while (l != 0) {
  46 + parse_even_earlier(bus_clock, "busclock", l);
  47 + parse_even_earlier(cpu_clock_freq, "cpuclock", l);
  48 + parse_even_earlier(memsize, "memsize", l);
  49 + parse_even_earlier(highmemsize, "highmemsize", l);
  50 + _prom_envp++;
  51 + l = (long)*_prom_envp;
  52 + }
  53 + if (memsize == 0)
  54 + memsize = 256;
  55 +
  56 + pr_info("busclock=%ld, cpuclock=%ld, memsize=%ld, highmemsize=%ld\n",
  57 + bus_clock, cpu_clock_freq, memsize, highmemsize);
  58 +}
arch/mips/loongson/common/init.c
Diff comments   View file @ 85749d2
  1 +/*
  2 + * Copyright (C) 2009 Lemote Inc. & Insititute of Computing Technology
  3 + * Author: Wu Zhangjin, wuzj@lemote.com
  4 + *
  5 + * This program is free software; you can redistribute it and/or modify it
  6 + * under the terms of the GNU General Public License as published by the
  7 + * Free Software Foundation; either version 2 of the License, or (at your
  8 + * option) any later version.
  9 + */
  10 +
  11 +#include <linux/bootmem.h>
  12 +
  13 +#include <asm/bootinfo.h>
  14 +
  15 +#include <loongson.h>
  16 +
  17 +void __init prom_init(void)
  18 +{
  19 + /* init base address of io space */
  20 + set_io_port_base((unsigned long)
  21 + ioremap(BONITO_PCIIO_BASE, BONITO_PCIIO_SIZE));
  22 +
  23 + prom_init_cmdline();
  24 + prom_init_env();
  25 + prom_init_memory();
  26 +}
  27 +
  28 +void __init prom_free_prom_memory(void)
  29 +{
  30 +}
arch/mips/loongson/common/irq.c
Diff comments   View file @ 85749d2
  1 +/*
  2 + * Copyright (C) 2007 Lemote Inc. & Insititute of Computing Technology
  3 + * Author: Fuxin Zhang, zhangfx@lemote.com
  4 + *
  5 + * This program is free software; you can redistribute it and/or modify it
  6 + * under the terms of the GNU General Public License as published by the
  7 + * Free Software Foundation; either version 2 of the License, or (at your
  8 + * option) any later version.
  9 + */
  10 +#include <linux/delay.h>
  11 +#include <linux/interrupt.h>
  12 +
  13 +#include <loongson.h>
  14 +/*
  15 + * the first level int-handler will jump here if it is a bonito irq
  16 + */
  17 +void bonito_irqdispatch(void)
  18 +{
  19 + u32 int_status;
  20 + int i;
  21 +
  22 + /* workaround the IO dma problem: let cpu looping to allow DMA finish */
  23 + int_status = BONITO_INTISR;
  24 + if (int_status & (1 << 10)) {
  25 + while (int_status & (1 << 10)) {
  26 + udelay(1);
  27 + int_status = BONITO_INTISR;
  28 + }
  29 + }
  30 +
  31 + /* Get pending sources, masked by current enables */
  32 + int_status = BONITO_INTISR & BONITO_INTEN;
  33 +
  34 + if (int_status != 0) {
  35 + i = __ffs(int_status);
  36 + int_status &= ~(1 << i);
  37 + do_IRQ(BONITO_IRQ_BASE + i);
  38 + }
  39 +}
  40 +
  41 +asmlinkage void plat_irq_dispatch(void)
  42 +{
  43 + unsigned int pending;
  44 +
  45 + pending = read_c0_cause() & read_c0_status() & ST0_IM;
  46 +
  47 + /* machine-specific plat_irq_dispatch */
  48 + mach_irq_dispatch(pending);
  49 +}
  50 +
  51 +void __init arch_init_irq(void)
  52 +{
  53 + /*
  54 + * Clear all of the interrupts while we change the able around a bit.
  55 + * int-handler is not on bootstrap
  56 + */
  57 + clear_c0_status(ST0_IM | ST0_BEV);
  58 + local_irq_disable();
  59 +
  60 + /* setting irq trigger mode */
  61 + set_irq_trigger_mode();
  62 +
  63 + /* no steer */
  64 + BONITO_INTSTEER = 0;
  65 +
  66 + /*
  67 + * Mask out all interrupt by writing "1" to all bit position in
  68 + * the interrupt reset reg.
  69 + */
  70 + BONITO_INTENCLR = ~0;
  71 +
  72 + /* machine specific irq init */
  73 + mach_init_irq();
  74 +}
arch/mips/loongson/common/machtype.c
Diff comments   View file @ 85749d2
  1 +/*
  2 + * Copyright (C) 2009 Lemote Inc. & Insititute of Computing Technology
  3 + * Author: Wu Zhangjin, wuzj@lemote.com
  4 + *
  5 + * This program is free software; you can redistribute it and/or modify it
  6 + * under the terms of the GNU General Public License as published by the
  7 + * Free Software Foundation; either version 2 of the License, or (at your
  8 + * option) any later version.
  9 + */
  10 +
  11 +#include <machine.h>
  12 +
  13 +const char *get_system_type(void)
  14 +{
  15 + return LOONGSON_MACHNAME;
  16 +}
arch/mips/loongson/common/mem.c
Diff comments   View file @ 85749d2
  1 +/*
  2 + * This program is free software; you can redistribute it and/or modify it
  3 + * under the terms of the GNU General Public License as published by the
  4 + * Free Software Foundation; either version 2 of the License, or (at your
  5 + * option) any later version.
  6 + */
  7 +#include <linux/fs.h>
  8 +#include <linux/fcntl.h>
  9 +#include <linux/mm.h>
  10 +
  11 +#include <asm/bootinfo.h>
  12 +
  13 +#include <loongson.h>
  14 +#include <mem.h>
  15 +
  16 +void __init prom_init_memory(void)
  17 +{
  18 + add_memory_region(0x0, (memsize << 20), BOOT_MEM_RAM);
  19 +#ifdef CONFIG_64BIT
  20 + if (highmemsize > 0)
  21 + add_memory_region(LOONGSON_HIGHMEM_START,
  22 + highmemsize << 20, BOOT_MEM_RAM);
  23 +#endif /* CONFIG_64BIT */
  24 +}
  25 +
  26 +/* override of arch/mips/mm/cache.c: __uncached_access */
  27 +int __uncached_access(struct file *file, unsigned long addr)
  28 +{
  29 + if (file->f_flags & O_SYNC)
  30 + return 1;
  31 +
  32 + return addr >= __pa(high_memory) ||
  33 + ((addr >= LOONGSON_MMIO_MEM_START) &&
  34 + (addr < LOONGSON_MMIO_MEM_END));
  35 +}
arch/mips/loongson/common/pci.c
Diff comments   View file @ 85749d2
  1 +/*
  2 + * Copyright (C) 2007 Lemote, Inc. & Institute of Computing Technology
  3 + * Author: Fuxin Zhang, zhangfx@lemote.com
  4 + *
  5 + * This program is free software; you can redistribute it and/or modify it
  6 + * under the terms of the GNU General Public License as published by the
  7 + * Free Software Foundation; either version 2 of the License, or (at your
  8 + * option) any later version.
  9 + */
  10 +#include <linux/pci.h>
  11 +
  12 +#include <pci.h>
  13 +#include <loongson.h>
  14 +
  15 +static struct resource loongson_pci_mem_resource = {
  16 + .name = "pci memory space",
  17 + .start = LOONGSON_PCI_MEM_START,
  18 + .end = LOONGSON_PCI_MEM_END,
  19 + .flags = IORESOURCE_MEM,
  20 +};
  21 +
  22 +static struct resource loongson_pci_io_resource = {
  23 + .name = "pci io space",
  24 + .start = LOONGSON_PCI_IO_START,
  25 + .end = IO_SPACE_LIMIT,
  26 + .flags = IORESOURCE_IO,
  27 +};
  28 +
  29 +static struct pci_controller loongson_pci_controller = {
  30 + .pci_ops = &bonito64_pci_ops,
  31 + .io_resource = &loongson_pci_io_resource,
  32 + .mem_resource = &loongson_pci_mem_resource,
  33 + .mem_offset = 0x00000000UL,
  34 + .io_offset = 0x00000000UL,
  35 +};
  36 +
  37 +static void __init setup_pcimap(void)
  38 +{
  39 + /*
  40 + * local to PCI mapping for CPU accessing PCI space
  41 + * CPU address space [256M,448M] is window for accessing pci space
  42 + * we set pcimap_lo[0,1,2] to map it to pci space[0M,64M], [320M,448M]
  43 + *
  44 + * pcimap: PCI_MAP2 PCI_Mem_Lo2 PCI_Mem_Lo1 PCI_Mem_Lo0
  45 + * [<2G] [384M,448M] [320M,384M] [0M,64M]
  46 + */
  47 + BONITO_PCIMAP = BONITO_PCIMAP_PCIMAP_2 |
  48 + BONITO_PCIMAP_WIN(2, BONITO_PCILO2_BASE) |
  49 + BONITO_PCIMAP_WIN(1, BONITO_PCILO1_BASE) |
  50 + BONITO_PCIMAP_WIN(0, 0);
  51 +
  52 + /*
  53 + * PCI-DMA to local mapping: [2G,2G+256M] -> [0M,256M]
  54 + */
  55 + BONITO_PCIBASE0 = 0x80000000ul; /* base: 2G -> mmap: 0M */
  56 + /* size: 256M, burst transmission, pre-fetch enable, 64bit */
  57 + LOONGSON_PCI_HIT0_SEL_L = 0xc000000cul;
  58 + LOONGSON_PCI_HIT0_SEL_H = 0xfffffffful;
  59 + LOONGSON_PCI_HIT1_SEL_L = 0x00000006ul; /* set this BAR as invalid */
  60 + LOONGSON_PCI_HIT1_SEL_H = 0x00000000ul;
  61 + LOONGSON_PCI_HIT2_SEL_L = 0x00000006ul; /* set this BAR as invalid */
  62 + LOONGSON_PCI_HIT2_SEL_H = 0x00000000ul;
  63 +
  64 + /* avoid deadlock of PCI reading/writing lock operation */
  65 + LOONGSON_PCI_ISR4C = 0xd2000001ul;
  66 +
  67 + /* can not change gnt to break pci transfer when device's gnt not
  68 + deassert for some broken device */
  69 + LOONGSON_PXARB_CFG = 0x00fe0105ul;
  70 +}
  71 +
  72 +static int __init pcibios_init(void)
  73 +{
  74 + setup_pcimap();
  75 +
  76 + loongson_pci_controller.io_map_base = mips_io_port_base;
  77 +
  78 + register_pci_controller(&loongson_pci_controller);
  79 +
  80 + return 0;
  81 +}
  82 +
  83 +arch_initcall(pcibios_init);
arch/mips/loongson/common/reset.c
Diff comments   View file @ 85749d2
  1 +/*
  2 + * This program is free software; you can redistribute it and/or modify it
  3 + * under the terms of the GNU General Public License as published by the
  4 + * Free Software Foundation; either version 2 of the License, or (at your
  5 + * option) any later version.
  6 + *
  7 + * Copyright (C) 2007 Lemote, Inc. & Institute of Computing Technology
  8 + * Author: Fuxin Zhang, zhangfx@lemote.com
  9 + * Copyright (C) 2009 Lemote, Inc. & Institute of Computing Technology
  10 + * Author: Zhangjin Wu, wuzj@lemote.com
  11 + */
  12 +#include <linux/init.h>
  13 +#include <linux/pm.h>
  14 +
  15 +#include <asm/reboot.h>
  16 +
  17 +#include <loongson.h>
  18 +
  19 +static void loongson_restart(char *command)
  20 +{
  21 + /* do preparation for reboot */
  22 + mach_prepare_reboot();
  23 +
  24 + /* reboot via jumping to boot base address */
  25 + ((void (*)(void))ioremap_nocache(BONITO_BOOT_BASE, 4)) ();
  26 +}
  27 +
  28 +static void loongson_halt(void)
  29 +{
  30 + mach_prepare_shutdown();
  31 + while (1)
  32 + ;
  33 +}
  34 +
  35 +static int __init mips_reboot_setup(void)
  36 +{
  37 + _machine_restart = loongson_restart;
  38 + _machine_halt = loongson_halt;
  39 + pm_power_off = loongson_halt;
  40 +
  41 + return 0;
  42 +}
  43 +
  44 +arch_initcall(mips_reboot_setup);
arch/mips/loongson/common/setup.c
Diff comments   View file @ 85749d2
  1 +/*
  2 + * Copyright (C) 2007 Lemote Inc. & Insititute of Computing Technology
  3 + * Author: Fuxin Zhang, zhangfx@lemote.com
  4 + *
  5 + * This program is free software; you can redistribute it and/or modify it
  6 + * under the terms of the GNU General Public License as published by the
  7 + * Free Software Foundation; either version 2 of the License, or (at your
  8 + * option) any later version.
  9 + */
  10 +#include <linux/module.h>
  11 +
  12 +#include <asm/wbflush.h>
  13 +
  14 +#include <loongson.h>
  15 +
  16 +#ifdef CONFIG_VT
  17 +#include <linux/console.h>
  18 +#include <linux/screen_info.h>
  19 +#endif
  20 +
  21 +void (*__wbflush)(void);
  22 +EXPORT_SYMBOL(__wbflush);
  23 +
  24 +static void wbflush_loongson(void)
  25 +{
  26 + asm(".set\tpush\n\t"
  27 + ".set\tnoreorder\n\t"
  28 + ".set mips3\n\t"
  29 + "sync\n\t"
  30 + "nop\n\t"
  31 + ".set\tpop\n\t"
  32 + ".set mips0\n\t");
  33 +}
  34 +
  35 +void __init plat_mem_setup(void)
  36 +{
  37 + __wbflush = wbflush_loongson;
  38 +
  39 +#ifdef CONFIG_VT
  40 +#if defined(CONFIG_VGA_CONSOLE)
  41 + conswitchp = &vga_con;
  42 +
  43 + screen_info = (struct screen_info) {
  44 + 0, 25, /* orig-x, orig-y */
  45 + 0, /* unused */
  46 + 0, /* orig-video-page */
  47 + 0, /* orig-video-mode */
  48 + 80, /* orig-video-cols */
  49 + 0, 0, 0, /* ega_ax, ega_bx, ega_cx */
  50 + 25, /* orig-video-lines */
  51 + VIDEO_TYPE_VGAC, /* orig-video-isVGA */
  52 + 16 /* orig-video-points */
  53 + };
  54 +#elif defined(CONFIG_DUMMY_CONSOLE)
  55 + conswitchp = &dummy_con;
  56 +#endif
  57 +#endif
  58 +}
arch/mips/loongson/common/time.c
Diff comments   View file @ 85749d2
  1 +/*
  2 + * Copyright (C) 2007 Lemote, Inc. & Institute of Computing Technology
  3 + * Author: Fuxin Zhang, zhangfx@lemote.com
  4 + *
  5 + * Copyright (C) 2009 Lemote Inc. & Insititute of Computing Technology
  6 + * Author: Wu Zhangjin, wuzj@lemote.com
  7 + *
  8 + * This program is free software; you can redistribute it and/or modify it
  9 + * under the terms of the GNU General Public License as published by the
  10 + * Free Software Foundation; either version 2 of the License, or (at your
  11 + * option) any later version.
  12 + */
  13 +#include <asm/mc146818-time.h>
  14 +#include <asm/time.h>
  15 +
  16 +#include <loongson.h>
  17 +
  18 +void __init plat_time_init(void)
  19 +{
  20 + /* setup mips r4k timer */
  21 + mips_hpt_frequency = cpu_clock_freq / 2;
  22 +}
  23 +
  24 +unsigned long read_persistent_clock(void)
  25 +{
  26 + return mc146818_get_cmos_time();
  27 +}
arch/mips/loongson/fuloong-2e/Makefile
Diff comments   View file @ 85749d2
... ... @@ -2,13 +2,7 @@
2 2 # Makefile for Lemote Fuloong2e mini-PC board.
3 3 #
4 4  
5   -obj-y += setup.o init.o reset.o irq.o pci.o bonito-irq.o mem.o \
6   - env.o cmdline.o time.o machtype.o
7   -
8   -#
9   -# Early printk support
10   -#
11   -obj-$(CONFIG_EARLY_PRINTK) += early_printk.o
  5 +obj-y += irq.o reset.o machtype.o
12 6  
13 7 EXTRA_CFLAGS += -Werror
arch/mips/loongson/fuloong-2e/bonito-irq.c
View file @ 85749d2
1   -/*
2   - * Copyright 2001 MontaVista Software Inc.
3   - * Author: Jun Sun, jsun@mvista.com or jsun@junsun.net
4   - * Copyright (C) 2000, 2001 Ralf Baechle (ralf@gnu.org)
5   - *
6   - * Copyright (C) 2007 Lemote Inc. & Insititute of Computing Technology
7   - * Author: Fuxin Zhang, zhangfx@lemote.com
8   - *
9   - * This program is free software; you can redistribute it and/or modify it
10   - * under the terms of the GNU General Public License as published by the
11   - * Free Software Foundation; either version 2 of the License, or (at your
12   - * option) any later version.
13   - */
14   -#include <linux/interrupt.h>
15   -
16   -#include <loongson.h>
17   -
18   -static inline void bonito_irq_enable(unsigned int irq)
19   -{
20   - BONITO_INTENSET = (1 << (irq - BONITO_IRQ_BASE));
21   - mmiowb();
22   -}
23   -
24   -static inline void bonito_irq_disable(unsigned int irq)
25   -{
26   - BONITO_INTENCLR = (1 << (irq - BONITO_IRQ_BASE));
27   - mmiowb();
28   -}
29   -
30   -static struct irq_chip bonito_irq_type = {
31   - .name = "bonito_irq",
32   - .ack = bonito_irq_disable,
33   - .mask = bonito_irq_disable,
34   - .mask_ack = bonito_irq_disable,
35   - .unmask = bonito_irq_enable,
36   -};
37   -
38   -static struct irqaction dma_timeout_irqaction = {
39   - .handler = no_action,
40   - .name = "dma_timeout",
41   -};
42   -
43   -void bonito_irq_init(void)
44   -{
45   - u32 i;
46   -
47   - for (i = BONITO_IRQ_BASE; i < BONITO_IRQ_BASE + 32; i++)
48   - set_irq_chip_and_handler(i, &bonito_irq_type, handle_level_irq);
49   -
50   - setup_irq(BONITO_IRQ_BASE + 10, &dma_timeout_irqaction);
51   -}
arch/mips/loongson/fuloong-2e/cmdline.c
View file @ 85749d2
1   -/*
2   - * Based on Ocelot Linux port, which is
3   - * Copyright 2001 MontaVista Software Inc.
4   - * Author: jsun@mvista.com or jsun@junsun.net
5   - *
6   - * Copyright 2003 ICT CAS
7   - * Author: Michael Guo <guoyi@ict.ac.cn>
8   - *
9   - * Copyright (C) 2007 Lemote Inc. & Insititute of Computing Technology
10   - * Author: Fuxin Zhang, zhangfx@lemote.com
11   - *
12   - * Copyright (C) 2009 Lemote Inc. & Insititute of Computing Technology
13   - * Author: Wu Zhangjin, wuzj@lemote.com
14   - *
15   - * This program is free software; you can redistribute it and/or modify it
16   - * under the terms of the GNU General Public License as published by the
17   - * Free Software Foundation; either version 2 of the License, or (at your
18   - * option) any later version.
19   - */
20   -#include <asm/bootinfo.h>
21   -
22   -#include <loongson.h>
23   -
24   -int prom_argc;
25   -/* pmon passes arguments in 32bit pointers */
26   -int *_prom_argv;
27   -
28   -void __init prom_init_cmdline(void)
29   -{
30   - int i;
31   - long l;
32   -
33   - /* firmware arguments are initialized in head.S */
34   - prom_argc = fw_arg0;
35   - _prom_argv = (int *)fw_arg1;
36   -
37   - /* arg[0] is "g", the rest is boot parameters */
38   - arcs_cmdline[0] = '\0';
39   - for (i = 1; i < prom_argc; i++) {
40   - l = (long)_prom_argv[i];
41   - if (strlen(arcs_cmdline) + strlen(((char *)l) + 1)
42   - >= sizeof(arcs_cmdline))
43   - break;
44   - strcat(arcs_cmdline, ((char *)l));
45   - strcat(arcs_cmdline, " ");
46   - }
47   -
48   - if ((strstr(arcs_cmdline, "console=")) == NULL)
49   - strcat(arcs_cmdline, " console=ttyS0,115200");
50   - if ((strstr(arcs_cmdline, "root=")) == NULL)
51   - strcat(arcs_cmdline, " root=/dev/hda1");
52   -}
arch/mips/loongson/fuloong-2e/early_printk.c
View file @ 85749d2
1   -/* early printk support
2   - *
3   - * Copyright (c) 2009 Philippe Vachon <philippe@cowpig.ca>
4   - * Copyright (C) 2009 Lemote Inc. & Insititute of Computing Technology
5   - * Author: Wu Zhangjin, wuzj@lemote.com
6   - *
7   - * This program is free software; you can redistribute it and/or modify it
8   - * under the terms of the GNU General Public License as published by the
9   - * Free Software Foundation; either version 2 of the License, or (at your
10   - * option) any later version.
11   - */
12   -#include <linux/serial_reg.h>
13   -
14   -#include <loongson.h>
15   -
16   -#define UART_BASE (BONITO_PCIIO_BASE + 0x3f8)
17   -
18   -#define PORT(base, offset) (u8 *)(base + offset)
19   -
20   -static inline unsigned int serial_in(phys_addr_t base, int offset)
21   -{
22   - return readb(PORT(base, offset));
23   -}
24   -
25   -static inline void serial_out(phys_addr_t base, int offset, int value)
26   -{
27   - writeb(value, PORT(base, offset));
28   -}
29   -
30   -void prom_putchar(char c)
31   -{
32   - phys_addr_t uart_base =
33   - (phys_addr_t) ioremap_nocache(UART_BASE, 8);
34   -
35   - while ((serial_in(uart_base, UART_LSR) & UART_LSR_THRE) == 0)
36   - ;
37   -
38   - serial_out(uart_base, UART_TX, c);
39   -}
arch/mips/loongson/fuloong-2e/env.c
View file @ 85749d2
1   -/*
2   - * Based on Ocelot Linux port, which is
3   - * Copyright 2001 MontaVista Software Inc.
4   - * Author: jsun@mvista.com or jsun@junsun.net
5   - *
6   - * Copyright 2003 ICT CAS
7   - * Author: Michael Guo <guoyi@ict.ac.cn>
8   - *
9   - * Copyright (C) 2007 Lemote Inc. & Insititute of Computing Technology
10   - * Author: Fuxin Zhang, zhangfx@lemote.com
11   - *
12   - * Copyright (C) 2009 Lemote Inc. & Insititute of Computing Technology
13   - * Author: Wu Zhangjin, wuzj@lemote.com
14   - *
15   - * This program is free software; you can redistribute it and/or modify it
16   - * under the terms of the GNU General Public License as published by the
17   - * Free Software Foundation; either version 2 of the License, or (at your
18   - * option) any later version.
19   - */
20   -#include <asm/bootinfo.h>
21   -
22   -#include <loongson.h>
23   -
24   -unsigned long bus_clock, cpu_clock_freq;
25   -unsigned long memsize, highmemsize;
26   -
27   -/* pmon passes arguments in 32bit pointers */
28   -int *_prom_envp;
29   -
30   -#define parse_even_earlier(res, option, p) \
31   -do { \
32   - if (strncmp(option, (char *)p, strlen(option)) == 0) \
33   - strict_strtol((char *)p + strlen(option"="), \
34   - 10, &res); \
35   -} while (0)
36   -
37   -void __init prom_init_env(void)
38   -{
39   - long l;
40   -
41   - /* firmware arguments are initialized in head.S */
42   - _prom_envp = (int *)fw_arg2;
43   -
44   - l = (long)*_prom_envp;
45   - while (l != 0) {
46   - parse_even_earlier(bus_clock, "busclock", l);
47   - parse_even_earlier(cpu_clock_freq, "cpuclock", l);
48   - parse_even_earlier(memsize, "memsize", l);
49   - parse_even_earlier(highmemsize, "highmemsize", l);
50   - _prom_envp++;
51   - l = (long)*_prom_envp;
52   - }
53   - if (memsize == 0)
54   - memsize = 256;
55   -
56   - pr_info("busclock=%ld, cpuclock=%ld, memsize=%ld, highmemsize=%ld\n",
57   - bus_clock, cpu_clock_freq, memsize, highmemsize);
58   -}
arch/mips/loongson/fuloong-2e/init.c
View file @ 85749d2
1   -/*
2   - * Copyright (C) 2009 Lemote Inc. & Insititute of Computing Technology
3   - * Author: Wu Zhangjin, wuzj@lemote.com
4   - *
5   - * This program is free software; you can redistribute it and/or modify it
6   - * under the terms of the GNU General Public License as published by the
7   - * Free Software Foundation; either version 2 of the License, or (at your
8   - * option) any later version.
9   - */
10   -
11   -#include <linux/bootmem.h>
12   -
13   -#include <asm/bootinfo.h>
14   -
15   -#include <loongson.h>
16   -
17   -void __init prom_init(void)
18   -{
19   - /* init base address of io space */
20   - set_io_port_base((unsigned long)
21   - ioremap(BONITO_PCIIO_BASE, BONITO_PCIIO_SIZE));
22   -
23   - prom_init_cmdline();
24   - prom_init_env();
25   - prom_init_memory();
26   -}
27   -
28   -void __init prom_free_prom_memory(void)
29   -{
30   -}
arch/mips/loongson/fuloong-2e/irq.c
Diff comments   View file @ 85749d2
... ... @@ -7,40 +7,13 @@
7 7 * Free Software Foundation; either version 2 of the License, or (at your
8 8 * option) any later version.
9 9 */
10   -#include <linux/delay.h>
11 10 #include <linux/interrupt.h>
12 11  
13 12 #include <asm/irq_cpu.h>
14 13 #include <asm/i8259.h>
15 14  
16 15 #include <loongson.h>
17   -/*
18   - * the first level int-handler will jump here if it is a bonito irq
19   - */
20   -static void bonito_irqdispatch(void)
21   -{
22   - u32 int_status;
23   - int i;
24 16  
25   - /* workaround the IO dma problem: let cpu looping to allow DMA finish */
26   - int_status = BONITO_INTISR;
27   - if (int_status & (1 << 10)) {
28   - while (int_status & (1 << 10)) {
29   - udelay(1);
30   - int_status = BONITO_INTISR;
31   - }
32   - }
33   -
34   - /* Get pending sources, masked by current enables */
35   - int_status = BONITO_INTISR & BONITO_INTEN;
36   -
37   - if (int_status != 0) {
38   - i = __ffs(int_status);
39   - int_status &= ~(1 << i);
40   - do_IRQ(BONITO_IRQ_BASE + i);
41   - }
42   -}
43   -
44 17 static void i8259_irqdispatch(void)
45 18 {
46 19 int irq;
47 20  
... ... @@ -52,10 +25,8 @@
52 25 spurious_interrupt();
53 26 }
54 27  
55   -asmlinkage void plat_irq_dispatch(void)
  28 +asmlinkage void mach_irq_dispatch(unsigned int pending)
56 29 {
57   - unsigned int pending = read_c0_cause() & read_c0_status() & ST0_IM;
58   -
59 30 if (pending & CAUSEF_IP7)
60 31 do_IRQ(MIPS_CPU_IRQ_BASE + 7);
61 32 else if (pending & CAUSEF_IP6) /* perf counter loverflow */
62 33  
63 34  
64 35  
... ... @@ -73,26 +44,15 @@
73 44 .name = "cascade",
74 45 };
75 46  
76   -void __init arch_init_irq(void)
  47 +void __init set_irq_trigger_mode(void)
77 48 {
78   - /*
79   - * Clear all of the interrupts while we change the able around a bit.
80   - * int-handler is not on bootstrap
81   - */
82   - clear_c0_status(ST0_IM | ST0_BEV);
83   - local_irq_disable();
84   -
85 49 /* most bonito irq should be level triggered */
86 50 BONITO_INTEDGE = BONITO_ICU_SYSTEMERR | BONITO_ICU_MASTERERR |
87   - BONITO_ICU_RETRYERR | BONITO_ICU_MBOXES;
88   - BONITO_INTSTEER = 0;
  51 + BONITO_ICU_RETRYERR | BONITO_ICU_MBOXES;
  52 +}
89 53  
90   - /*
91   - * Mask out all interrupt by writing "1" to all bit position in
92   - * the interrupt reset reg.
93   - */
94   - BONITO_INTENCLR = ~0;
95   -
  54 +void __init mach_init_irq(void)
  55 +{
96 56 /* init all controller
97 57 * 0-15 ------> i8259 interrupt
98 58 * 16-23 ------> mips cpu interrupt
arch/mips/loongson/fuloong-2e/machtype.c
View file @ 85749d2
1   -/*
2   - * Copyright (C) 2009 Lemote Inc. & Insititute of Computing Technology
3   - * Author: Wu Zhangjin, wuzj@lemote.com
4   - *
5   - * This program is free software; you can redistribute it and/or modify it
6   - * under the terms of the GNU General Public License as published by the
7   - * Free Software Foundation; either version 2 of the License, or (at your
8   - * option) any later version.
9   - */
10   -
11   -const char *get_system_type(void)
12   -{
13   - return "lemote-fuloong-2e-box";
14   -}
arch/mips/loongson/fuloong-2e/mem.c
View file @ 85749d2
1   -/*
2   - * This program is free software; you can redistribute it and/or modify it
3   - * under the terms of the GNU General Public License as published by the
4   - * Free Software Foundation; either version 2 of the License, or (at your
5   - * option) any later version.
6   - */
7   -#include <linux/fs.h>
8   -#include <linux/fcntl.h>
9   -#include <linux/mm.h>
10   -
11   -#include <asm/bootinfo.h>
12   -
13   -#include <loongson.h>
14   -
15   -void __init prom_init_memory(void)
16   -{
17   - add_memory_region(0x0, (memsize << 20), BOOT_MEM_RAM);
18   -#ifdef CONFIG_64BIT
19   - if (highmemsize > 0)
20   - add_memory_region(0x20000000, highmemsize << 20, BOOT_MEM_RAM);
21   -#endif /* CONFIG_64BIT */
22   -}
23   -
24   -/* override of arch/mips/mm/cache.c: __uncached_access */
25   -int __uncached_access(struct file *file, unsigned long addr)
26   -{
27   - if (file->f_flags & O_SYNC)
28   - return 1;
29   -
30   - /*
31   - * On the Lemote Loongson 2e system, the peripheral registers
32   - * reside between 0x1000:0000 and 0x2000:0000.
33   - */
34   - return addr >= __pa(high_memory) ||
35   - ((addr >= 0x10000000) && (addr < 0x20000000));
36   -}
arch/mips/loongson/fuloong-2e/pci.c
View file @ 85749d2
1   -/*
2   - * Copyright (C) 2007 Lemote, Inc. & Institute of Computing Technology
3   - * Author: Fuxin Zhang, zhangfx@lemote.com
4   - *
5   - * This program is free software; you can redistribute it and/or modify it
6   - * under the terms of the GNU General Public License as published by the
7   - * Free Software Foundation; either version 2 of the License, or (at your
8   - * option) any later version.
9   - */
10   -#include <linux/pci.h>
11   -
12   -#include <pci.h>
13   -#include <loongson.h>
14   -
15   -static struct resource loongson2e_pci_mem_resource = {
16   - .name = "LOONGSON2E PCI MEM",
17   - .start = LOONGSON2E_PCI_MEM_START,
18   - .end = LOONGSON2E_PCI_MEM_END,
19   - .flags = IORESOURCE_MEM,
20   -};
21   -
22   -static struct resource loongson2e_pci_io_resource = {
23   - .name = "LOONGSON2E PCI IO MEM",
24   - .start = LOONGSON2E_PCI_IO_START,
25   - .end = IO_SPACE_LIMIT,
26   - .flags = IORESOURCE_IO,
27   -};
28   -
29   -static struct pci_controller loongson2e_pci_controller = {
30   - .pci_ops = &bonito64_pci_ops,
31   - .io_resource = &loongson2e_pci_io_resource,
32   - .mem_resource = &loongson2e_pci_mem_resource,
33   - .mem_offset = 0x00000000UL,
34   - .io_offset = 0x00000000UL,
35   -};
36   -
37   -static void __init setup_pcimap(void)
38   -{
39   - /*
40   - * local to PCI mapping for CPU accessing PCI space
41   - * CPU address space [256M,448M] is window for accessing pci space
42   - * we set pcimap_lo[0,1,2] to map it to pci space[0M,64M], [320M,448M]
43   - *
44   - * pcimap: PCI_MAP2 PCI_Mem_Lo2 PCI_Mem_Lo1 PCI_Mem_Lo0
45   - * [<2G] [384M,448M] [320M,384M] [0M,64M]
46   - */
47   - BONITO_PCIMAP = BONITO_PCIMAP_PCIMAP_2 |
48   - BONITO_PCIMAP_WIN(2, BONITO_PCILO2_BASE) |
49   - BONITO_PCIMAP_WIN(1, BONITO_PCILO1_BASE) |
50   - BONITO_PCIMAP_WIN(0, 0);
51   -
52   - /*
53   - * PCI-DMA to local mapping: [2G,2G+256M] -> [0M,256M]
54   - */
55   - BONITO_PCIBASE0 = 0x80000000ul; /* base: 2G -> mmap: 0M */
56   - /* size: 256M, burst transmission, pre-fetch enable, 64bit */
57   - LOONGSON_PCI_HIT0_SEL_L = 0xc000000cul;
58   - LOONGSON_PCI_HIT0_SEL_H = 0xfffffffful;
59   - LOONGSON_PCI_HIT1_SEL_L = 0x00000006ul; /* set this BAR as invalid */
60   - LOONGSON_PCI_HIT1_SEL_H = 0x00000000ul;
61   - LOONGSON_PCI_HIT2_SEL_L = 0x00000006ul; /* set this BAR as invalid */
62   - LOONGSON_PCI_HIT2_SEL_H = 0x00000000ul;
63   -
64   - /* avoid deadlock of PCI reading/writing lock operation */
65   - LOONGSON_PCI_ISR4C = 0xd2000001ul;
66   -
67   - /* can not change gnt to break pci transfer when device's gnt not
68   - deassert for some broken device */
69   - LOONGSON_PXARB_CFG = 0x00fe0105ul;
70   -}
71   -
72   -static int __init pcibios_init(void)
73   -{
74   - setup_pcimap();
75   -
76   - loongson2e_pci_controller.io_map_base = mips_io_port_base;
77   -
78   - register_pci_controller(&loongson2e_pci_controller);
79   -
80   - return 0;
81   -}
82   -
83   -arch_initcall(pcibios_init);
arch/mips/loongson/fuloong-2e/reset.c
Diff comments   View file @ 85749d2
1   -/*
  1 +/* Board-specific reboot/shutdown routines
  2 + * Copyright (c) 2009 Philippe Vachon <philippe@cowpig.ca>
  3 + *
  4 + * Copyright (C) 2009 Lemote Inc. & Insititute of Computing Technology
  5 + * Author: Wu Zhangjin, wuzj@lemote.com
  6 + *
2 7 * This program is free software; you can redistribute it and/or modify it
3 8 * under the terms of the GNU General Public License as published by the
4 9 * Free Software Foundation; either version 2 of the License, or (at your
5 10 * option) any later version.
6   - *
7   - * Copyright (C) 2007 Lemote, Inc. & Institute of Computing Technology
8   - * Author: Fuxin Zhang, zhangfx@lemote.com
9   - * Copyright (C) 2009 Lemote, Inc. & Institute of Computing Technology
10   - * Author: Zhangjin Wu, wuzj@lemote.com
11 11 */
12   -#include <linux/init.h>
13   -#include <linux/pm.h>
14 12  
15   -#include <asm/reboot.h>
16   -
17 13 #include <loongson.h>
18 14  
19   -static void loongson2e_restart(char *command)
  15 +void mach_prepare_reboot(void)
20 16 {
21   - /* do preparation for reboot */
22 17 BONITO_BONGENCFG &= ~(1 << 2);
23 18 BONITO_BONGENCFG |= (1 << 2);
24   -
25   - /* reboot via jumping to boot base address */
26   - ((void (*)(void))ioremap_nocache(BONITO_BOOT_BASE, 4)) ();
27 19 }
28 20  
29   -static void loongson2e_halt(void)
  21 +void mach_prepare_shutdown(void)
30 22 {
31   - while (1)
32   - ;
33 23 }
34   -
35   -static int __init mips_reboot_setup(void)
36   -{
37   - _machine_restart = loongson2e_restart;
38   - _machine_halt = loongson2e_halt;
39   - pm_power_off = loongson2e_halt;
40   -
41   - return 0;
42   -}
43   -
44   -arch_initcall(mips_reboot_setup);
arch/mips/loongson/fuloong-2e/time.c
View file @ 85749d2
1   -/*
2   - * Copyright (C) 2007 Lemote, Inc. & Institute of Computing Technology
3   - * Author: Fuxin Zhang, zhangfx@lemote.com
4   - *
5   - * Copyright (C) 2009 Lemote Inc. & Insititute of Computing Technology
6   - * Author: Wu Zhangjin, wuzj@lemote.com
7   - *
8   - * This program is free software; you can redistribute it and/or modify it
9   - * under the terms of the GNU General Public License as published by the
10   - * Free Software Foundation; either version 2 of the License, or (at your
11   - * option) any later version.
12   - */
13   -#include <asm/mc146818-time.h>
14   -#include <asm/time.h>
15   -
16   -#include <loongson.h>
17   -
18   -void __init plat_time_init(void)
19   -{
20   - /* setup mips r4k timer */
21   - mips_hpt_frequency = cpu_clock_freq / 2;
22   -}
23   -
24   -unsigned long read_persistent_clock(void)
25   -{
26   - return mc146818_get_cmos_time();
27   -}