From e2fee5723bbda4a05c86f16a9d0f889a2c4ecede Mon Sep 17 00:00:00 2001 From: Wu Zhangjin Date: Fri, 16 Oct 2009 14:17:19 +0800 Subject: MIPS: Bonito64: Make Loongson independent from Bonito64 code. The built-in Loongson 2E/2F northbridge in is bonito64-compatible but not identical with it. To avoid influencing the original bonito64 support and make the loongson support more maintainable, it's better to separate the Bonito64 code from the Loongson code. This also prepares the kernel for the coming Loongson 2f machines family support. Signed-off-by: Wu Zhangjin Cc: Linux-MIPS Cc: yanh@lemote.com Cc: huhb@lemote.com Cc: Zhang Le Cc: zhangfx@lemote.com, Signed-off-by: Ralf Baechle --- arch/mips/loongson/common/init.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'arch/mips/loongson/common/init.c') diff --git a/arch/mips/loongson/common/init.c b/arch/mips/loongson/common/init.c index 3abe927422a3..b7e4913627ab 100644 --- a/arch/mips/loongson/common/init.c +++ b/arch/mips/loongson/common/init.c @@ -18,7 +18,7 @@ void __init prom_init(void) { /* init base address of io space */ set_io_port_base((unsigned long) - ioremap(BONITO_PCIIO_BASE, BONITO_PCIIO_SIZE)); + ioremap(LOONGSON_PCIIO_BASE, LOONGSON_PCIIO_SIZE)); prom_init_cmdline(); prom_init_env(); -- cgit v1.2.3 From a3ed495190ebe918f4584291ed8c76f1c97a84fd Mon Sep 17 00:00:00 2001 From: Wu Zhangjin Date: Fri, 6 Nov 2009 18:35:34 +0800 Subject: MIPS: Loongson: Cleanup the serial port support To share the same kernel image amon different machines we have added the machtype command line support. In the old serial port implementation the UART base address is hardcoded as a macro in machine.h which breaks with machtype, so change that to discover the address dynamically. Also move the initialization of the UART base address to uart_base.c to avoid remapping twice for early_printk.c and serial.c. Signed-off-by: Wu Zhangjin Cc: linux-mips@linux-mips.org Patchwork: http://patchwork.linux-mips.org/patch/581/ Patchwork: http://patchwork.linux-mips.org/patch/682/ Signed-off-by: Ralf Baechle --- arch/mips/loongson/common/init.c | 11 +++++++---- 1 file changed, 7 insertions(+), 4 deletions(-) (limited to 'arch/mips/loongson/common/init.c') diff --git a/arch/mips/loongson/common/init.c b/arch/mips/loongson/common/init.c index b7e4913627ab..3b1dbc1ca242 100644 --- a/arch/mips/loongson/common/init.c +++ b/arch/mips/loongson/common/init.c @@ -1,5 +1,5 @@ /* - * Copyright (C) 2009 Lemote Inc. & Insititute 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 @@ -10,19 +10,22 @@ #include -#include - #include void __init prom_init(void) { - /* init base address of io space */ + /* init base address of io space */ set_io_port_base((unsigned long) ioremap(LOONGSON_PCIIO_BASE, LOONGSON_PCIIO_SIZE)); prom_init_cmdline(); prom_init_env(); prom_init_memory(); + + /*init the uart base address */ +#if defined(CONFIG_EARLY_PRINTK) || defined(CONFIG_SERIAL_8250) + prom_init_uart_base(); +#endif } void __init prom_free_prom_memory(void) -- cgit v1.2.3 From 6f7a251a259e5bf58a9ff334bdcfa3e42b6cb7a3 Mon Sep 17 00:00:00 2001 From: Wu Zhangjin Date: Fri, 6 Nov 2009 18:45:05 +0800 Subject: 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: Wu Zhangjin Cc: linux-mips@linux-mips.org Signed-off-by: Ralf Baechle --- arch/mips/loongson/common/init.c | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'arch/mips/loongson/common/init.c') diff --git a/arch/mips/loongson/common/init.c b/arch/mips/loongson/common/init.c index 3b1dbc1ca242..743d3571f010 100644 --- a/arch/mips/loongson/common/init.c +++ b/arch/mips/loongson/common/init.c @@ -12,12 +12,20 @@ #include +/* Loongson CPU address windows config space base address */ +unsigned long __maybe_unused _loongson_addrwincfg_base; + void __init prom_init(void) { /* init base address of io space */ set_io_port_base((unsigned long) ioremap(LOONGSON_PCIIO_BASE, LOONGSON_PCIIO_SIZE)); +#if defined(CONFIG_CPU_LOONGSON2F) && defined(CONFIG_64BIT) + _loongson_addrwincfg_base = (unsigned long) + ioremap(LOONGSON_ADDRWINCFG_BASE, LOONGSON_ADDRWINCFG_SIZE); +#endif + prom_init_cmdline(); prom_init_env(); prom_init_memory(); -- cgit v1.2.3 From 55045ff5557bc804752e84dca5d1b1f1d4bb4e31 Mon Sep 17 00:00:00 2001 From: Wu Zhangjin Date: Wed, 11 Nov 2009 13:39:12 +0800 Subject: MIPS: Loongson 2F: Cleanup the #if clauses This patch adds two new kernel options: CPU_SUPPORTS_CPUFREQ and CPU_SUPPORTS_ADDRWINCFG to describe the new features of Loongons 2F and replaces the several ugly #if clauses by them. These two options will be utilized by the future loongson revisions and related drivers such as the coming Loongson 2F CPUFreq driver. Signed-off-by: Wu Zhangjin Cc: linux-mips@linux-mips.org Cc: Wu Zhangjin Signed-off-by: Ralf Baechle --- arch/mips/loongson/common/init.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'arch/mips/loongson/common/init.c') diff --git a/arch/mips/loongson/common/init.c b/arch/mips/loongson/common/init.c index 743d3571f010..2b92a23d29dd 100644 --- a/arch/mips/loongson/common/init.c +++ b/arch/mips/loongson/common/init.c @@ -21,7 +21,7 @@ void __init prom_init(void) set_io_port_base((unsigned long) ioremap(LOONGSON_PCIIO_BASE, LOONGSON_PCIIO_SIZE)); -#if defined(CONFIG_CPU_LOONGSON2F) && defined(CONFIG_64BIT) +#ifdef CONFIG_CPU_SUPPORTS_ADDRWINCFG _loongson_addrwincfg_base = (unsigned long) ioremap(LOONGSON_ADDRWINCFG_BASE, LOONGSON_ADDRWINCFG_SIZE); #endif -- cgit v1.2.3 From c3d8d85019c9e4f6e4f23d194b6432a2c2464372 Mon Sep 17 00:00:00 2001 From: Wu Zhangjin Date: Sat, 28 Nov 2009 14:21:50 +0800 Subject: MIPS: Loongson: Cleanups of serial port support This patchs uses a loongson_uart_base variable instead of the uart_base[] array and adds a new kernel option to avoid to compile uart_base.c all the time, which will save a little bit of memory for us. Signed-off-by: Wu Zhangjin Cc: linux-mips@linux-mips.org http://patchwork.linux-mips.org/patch/727/ Signed-off-by: Ralf Baechle --- arch/mips/loongson/common/init.c | 2 -- 1 file changed, 2 deletions(-) (limited to 'arch/mips/loongson/common/init.c') diff --git a/arch/mips/loongson/common/init.c b/arch/mips/loongson/common/init.c index 2b92a23d29dd..a2abd9355737 100644 --- a/arch/mips/loongson/common/init.c +++ b/arch/mips/loongson/common/init.c @@ -31,9 +31,7 @@ void __init prom_init(void) prom_init_memory(); /*init the uart base address */ -#if defined(CONFIG_EARLY_PRINTK) || defined(CONFIG_SERIAL_8250) prom_init_uart_base(); -#endif } void __init prom_free_prom_memory(void) -- cgit v1.2.3