Commit 6f7a251a authored by Wu Zhangjin's avatar Wu Zhangjin Committed by Ralf Baechle
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MIPS: Loongson: Add basic Loongson 2F support 



Loongson 2F has built-in DDR2 and PCI-X controller. The PCI-X controller
has a programming interface similiar to the the FPGA northbridge used on
Loongson 2E.

The main differences between Loongson 2E and Loongson 2F include:

1. Loongson 2F has an extra address window configuration module, which
   is used to map CPU address space to DDR or PCI address space, or map
   the PCI-DMA address space to DDR or LIO address space.

2. Loongson 2F supports 8 levels of software configurable CPu frequency
   which can be configured in the LOONGSON_CHIPCFG0 register.  The coming
   cpufreq and standby support are based on this feature.

Loongson.h abstracts the modules and corresponding methods are abstracted.

Add other Loongson-2F-specific source code including gcc 4.4 support, PCI
memory space, PCI IO space, DMA address.

Signed-off-by: default avatarWu Zhangjin <wuzhangjin@gmail.com>
Cc: linux-mips@linux-mips.org
Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
parent 937893cf

arch/mips/Kconfig

+18 −0
Original line number Diff line number Diff line
@@ -1073,6 +1073,21 @@ config CPU_LOONGSON2E 
	  The Loongson 2E processor implements the MIPS III instruction set

	  with many extensions.



	  It has an internal FPGA northbridge, which is compatiable to

	  bonito64.



config CPU_LOONGSON2F

	bool "Loongson 2F"

	depends on SYS_HAS_CPU_LOONGSON2F

	select CPU_LOONGSON2

	help

	  The Loongson 2F processor implements the MIPS III instruction set

	  with many extensions.



	  Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller

	  have a similar programming interface with FPGA northbridge used in

	  Loongson2E.



config CPU_MIPS32_R1

	bool "MIPS32 Release 1"

	depends on SYS_HAS_CPU_MIPS32_R1
@@ -1317,6 +1332,9 @@ config CPU_LOONGSON2 
config SYS_HAS_CPU_LOONGSON2E

	bool



config SYS_HAS_CPU_LOONGSON2F

	bool



config SYS_HAS_CPU_MIPS32_R1

	bool

arch/mips/Makefile

+2 −0
Original line number Diff line number Diff line
@@ -125,6 +125,8 @@ cflags-$(CONFIG_CPU_TX49XX) += -march=r4600 -Wa,--trap 
cflags-$(CONFIG_CPU_LOONGSON2)	+= -Wa,--trap

cflags-$(CONFIG_CPU_LOONGSON2E) += \

	$(call cc-option,-march=loongson2e,-march=r4600)

cflags-$(CONFIG_CPU_LOONGSON2F) += \

	$(call cc-option,-march=loongson2f,-march=r4600)



cflags-$(CONFIG_CPU_MIPS32_R1)	+= $(call cc-option,-march=mips32,-mips32 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS32) \

			-Wa,-mips32 -Wa,--trap

arch/mips/include/asm/mach-loongson/dma-coherence.h

+4 −0
Original line number Diff line number Diff line
@@ -28,7 +28,11 @@ static inline dma_addr_t plat_map_dma_mem_page(struct device *dev, 
static inline unsigned long plat_dma_addr_to_phys(struct device *dev,

	dma_addr_t dma_addr)

{

#if defined(CONFIG_CPU_LOONGSON2F) && defined(CONFIG_64BIT)

	return (dma_addr > 0x8fffffff) ? dma_addr : (dma_addr & 0x0fffffff);

#else

	return dma_addr & 0x7fffffff;

#endif

}



static inline void plat_unmap_dma_mem(struct device *dev, dma_addr_t dma_addr,

arch/mips/include/asm/mach-loongson/loongson.h

+83 −1
Original line number Diff line number Diff line 
/*

 * Copyright (C) 2009 Lemote, Inc. & Institute of Computing Technology

 * Copyright (C) 2009 Lemote, Inc.

 * Author: Wu Zhangjin <wuzj@lemote.com>

 *

 * This program is free software; you can redistribute  it and/or modify it
@@ -219,4 +219,86 @@ extern void mach_irq_dispatch(unsigned int pending); 
#define LOONGSON_PCIMAP_WIN(WIN, ADDR)	\

	((((ADDR)>>26) & LOONGSON_PCIMAP_PCIMAP_LO0) << ((WIN)*6))



/* Chip Config */

#ifdef CONFIG_CPU_LOONGSON2F

#define LOONGSON_CHIPCFG0		LOONGSON_REG(LOONGSON_REGBASE + 0x80)

#endif



/*

 * address windows configuration module

 *

 * loongson2e do not have this module

 */

#if defined(CONFIG_CPU_LOONGSON2F) && defined(CONFIG_64BIT)



/* address window config module base address */

#define LOONGSON_ADDRWINCFG_BASE		0x3ff00000ul

#define LOONGSON_ADDRWINCFG_SIZE		0x180



extern unsigned long _loongson_addrwincfg_base;

#define LOONGSON_ADDRWINCFG(offset) \

	(*(volatile u64 *)(_loongson_addrwincfg_base + (offset)))



#define CPU_WIN0_BASE	LOONGSON_ADDRWINCFG(0x00)

#define CPU_WIN1_BASE	LOONGSON_ADDRWINCFG(0x08)

#define CPU_WIN2_BASE	LOONGSON_ADDRWINCFG(0x10)

#define CPU_WIN3_BASE	LOONGSON_ADDRWINCFG(0x18)



#define CPU_WIN0_MASK	LOONGSON_ADDRWINCFG(0x20)

#define CPU_WIN1_MASK	LOONGSON_ADDRWINCFG(0x28)

#define CPU_WIN2_MASK	LOONGSON_ADDRWINCFG(0x30)

#define CPU_WIN3_MASK	LOONGSON_ADDRWINCFG(0x38)



#define CPU_WIN0_MMAP	LOONGSON_ADDRWINCFG(0x40)

#define CPU_WIN1_MMAP	LOONGSON_ADDRWINCFG(0x48)

#define CPU_WIN2_MMAP	LOONGSON_ADDRWINCFG(0x50)

#define CPU_WIN3_MMAP	LOONGSON_ADDRWINCFG(0x58)



#define PCIDMA_WIN0_BASE	LOONGSON_ADDRWINCFG(0x60)

#define PCIDMA_WIN1_BASE	LOONGSON_ADDRWINCFG(0x68)

#define PCIDMA_WIN2_BASE	LOONGSON_ADDRWINCFG(0x70)

#define PCIDMA_WIN3_BASE	LOONGSON_ADDRWINCFG(0x78)



#define PCIDMA_WIN0_MASK	LOONGSON_ADDRWINCFG(0x80)

#define PCIDMA_WIN1_MASK	LOONGSON_ADDRWINCFG(0x88)

#define PCIDMA_WIN2_MASK	LOONGSON_ADDRWINCFG(0x90)

#define PCIDMA_WIN3_MASK	LOONGSON_ADDRWINCFG(0x98)



#define PCIDMA_WIN0_MMAP	LOONGSON_ADDRWINCFG(0xa0)

#define PCIDMA_WIN1_MMAP	LOONGSON_ADDRWINCFG(0xa8)

#define PCIDMA_WIN2_MMAP	LOONGSON_ADDRWINCFG(0xb0)

#define PCIDMA_WIN3_MMAP	LOONGSON_ADDRWINCFG(0xb8)



#define ADDRWIN_WIN0	0

#define ADDRWIN_WIN1	1

#define ADDRWIN_WIN2	2

#define ADDRWIN_WIN3	3



#define ADDRWIN_MAP_DST_DDR	0

#define ADDRWIN_MAP_DST_PCI	1

#define ADDRWIN_MAP_DST_LIO	1



/*

 * s: CPU, PCIDMA

 * d: DDR, PCI, LIO

 * win: 0, 1, 2, 3

 * src: map source

 * dst: map destination

 * size: ~mask + 1

 */

#define LOONGSON_ADDRWIN_CFG(s, d, w, src, dst, size) do {\

	s##_WIN##w##_BASE = (src); \

	s##_WIN##w##_MMAP = (src) | ADDRWIN_MAP_DST_##d; \

	s##_WIN##w##_MASK = ~(size-1); \

} while (0)



#define LOONGSON_ADDRWIN_CPUTOPCI(win, src, dst, size) \

	LOONGSON_ADDRWIN_CFG(CPU, PCI, win, src, dst, size)

#define LOONGSON_ADDRWIN_CPUTODDR(win, src, dst, size) \

	LOONGSON_ADDRWIN_CFG(CPU, DDR, win, src, dst, size)

#define LOONGSON_ADDRWIN_PCITODDR(win, src, dst, size) \

	LOONGSON_ADDRWIN_CFG(PCIDMA, DDR, win, src, dst, size)



#endif	/* ! CONFIG_CPU_LOONGSON2F && CONFIG_64BIT */



#endif /* __ASM_MACH_LOONGSON_LOONGSON_H */

arch/mips/include/asm/mach-loongson/mem.h

+19 −8
Original line number Diff line number Diff line 
/*

 * Copyright (C) 2009 Lemote, Inc. & Institute of Computing Technology

 * Copyright (C) 2009 Lemote, Inc.

 * Author: Wu Zhangjin <wuzj@lemote.com>

 *

 * This program is free software; you can redistribute  it and/or modify it
@@ -12,19 +12,30 @@ 
#define __ASM_MACH_LOONGSON_MEM_H



/*

 * On Lemote Loongson 2e

 * high memory space

 *

 * the high memory space starts from 512M.

 * the peripheral registers reside between 0x1000:0000 and 0x2000:0000.

 * in loongson2e, starts from 512M

 * in loongson2f, starts from 2G 256M

 */



#ifdef CONFIG_LEMOTE_FULOONG2E



#ifdef CONFIG_CPU_LOONGSON2E

#define LOONGSON_HIGHMEM_START	0x20000000

#else

#define LOONGSON_HIGHMEM_START	0x90000000

#endif



/*

 * the peripheral registers(MMIO):

 *

 * On the Lemote Loongson 2e system, reside between 0x1000:0000 and 0x2000:0000.

 * On the Lemote Loongson 2f system, reside between 0x1000:0000 and 0x8000:0000.

 */



#define LOONGSON_MMIO_MEM_START 0x10000000

#define LOONGSON_MMIO_MEM_END   0x20000000



#ifdef CONFIG_CPU_LOONGSON2E

#define LOONGSON_MMIO_MEM_END	0x20000000

#else

#define LOONGSON_MMIO_MEM_END	0x80000000

#endif



#endif /* __ASM_MACH_LOONGSON_MEM_H */

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