diff options
Diffstat (limited to 'arch/m68knommu')
| -rw-r--r-- | arch/m68knommu/Kconfig | 98 | ||||
| -rw-r--r-- | arch/m68knommu/Makefile | 14 | ||||
| -rw-r--r-- | arch/m68knommu/kernel/setup.c | 72 | ||||
| -rw-r--r-- | arch/m68knommu/mm/Makefile | 2 | ||||
| -rw-r--r-- | arch/m68knommu/mm/fault.c | 57 | ||||
| -rw-r--r-- | arch/m68knommu/mm/kmap.c | 9 | ||||
| -rw-r--r-- | arch/m68knommu/mm/memory.c | 33 | ||||
| -rw-r--r-- | arch/m68knommu/platform/54xx/Makefile (renamed from arch/m68knommu/platform/548x/Makefile) | 0 | ||||
| -rw-r--r-- | arch/m68knommu/platform/54xx/config.c (renamed from arch/m68knommu/platform/548x/config.c) | 32 | ||||
| -rw-r--r-- | arch/m68knommu/platform/68328/ints.c | 4 | ||||
| -rw-r--r-- | arch/m68knommu/platform/coldfire/Makefile | 4 | ||||
| -rw-r--r-- | arch/m68knommu/platform/coldfire/cache.c | 48 | ||||
| -rw-r--r-- | arch/m68knommu/platform/coldfire/entry.S | 56 | ||||
| -rw-r--r-- | arch/m68knommu/platform/coldfire/head.S | 26 |
14 files changed, 212 insertions, 243 deletions
diff --git a/arch/m68knommu/Kconfig b/arch/m68knommu/Kconfig index fa9f746cf4ae..704e7b92334c 100644 --- a/arch/m68knommu/Kconfig +++ b/arch/m68knommu/Kconfig @@ -75,6 +75,16 @@ config GENERIC_CLOCKEVENTS config NO_IOPORT def_bool y +config COLDFIRE_SW_A7 + bool + default n + +config HAVE_CACHE_SPLIT + bool + +config HAVE_CACHE_CB + bool + source "init/Kconfig" source "kernel/Kconfig.freezer" @@ -107,69 +117,90 @@ config M68360 config M5206 bool "MCF5206" + select COLDFIRE_SW_A7 help Motorola ColdFire 5206 processor support. config M5206e bool "MCF5206e" + select COLDFIRE_SW_A7 help Motorola ColdFire 5206e processor support. config M520x bool "MCF520x" select GENERIC_CLOCKEVENTS + select HAVE_CACHE_SPLIT help Freescale Coldfire 5207/5208 processor support. config M523x bool "MCF523x" select GENERIC_CLOCKEVENTS + select HAVE_CACHE_SPLIT help Freescale Coldfire 5230/1/2/4/5 processor support config M5249 bool "MCF5249" + select COLDFIRE_SW_A7 help Motorola ColdFire 5249 processor support. config M5271 bool "MCF5271" + select HAVE_CACHE_SPLIT help Freescale (Motorola) ColdFire 5270/5271 processor support. config M5272 bool "MCF5272" + select COLDFIRE_SW_A7 help Motorola ColdFire 5272 processor support. config M5275 bool "MCF5275" + select HAVE_CACHE_SPLIT help Freescale (Motorola) ColdFire 5274/5275 processor support. config M528x bool "MCF528x" select GENERIC_CLOCKEVENTS + select HAVE_CACHE_SPLIT help Motorola ColdFire 5280/5282 processor support. config M5307 bool "MCF5307" + select COLDFIRE_SW_A7 + select HAVE_CACHE_CB help Motorola ColdFire 5307 processor support. config M532x bool "MCF532x" + select HAVE_CACHE_CB help Freescale (Motorola) ColdFire 532x processor support. config M5407 bool "MCF5407" + select COLDFIRE_SW_A7 + select HAVE_CACHE_CB help Motorola ColdFire 5407 processor support. +config M547x + bool "MCF547x" + select HAVE_CACHE_CB + help + Freescale ColdFire 5470/5471/5472/5473/5474/5475 processor support. + config M548x bool "MCF548x" + select HAVE_CACHE_CB help Freescale ColdFire 5480/5481/5482/5483/5484/5485 processor support. @@ -181,9 +212,14 @@ config M527x select GENERIC_CLOCKEVENTS default y +config M54xx + bool + depends on (M548x || M547x) + default y + config COLDFIRE bool - depends on (M5206 || M5206e || M520x || M523x || M5249 || M527x || M5272 || M528x || M5307 || M532x || M5407 || M548x) + depends on (M5206 || M5206e || M520x || M523x || M5249 || M527x || M5272 || M528x || M5307 || M532x || M5407 || M54xx) select GENERIC_GPIO select ARCH_REQUIRE_GPIOLIB default y @@ -230,6 +266,46 @@ config OLDMASK Build support for the older revision ColdFire 5307 silicon. Specifically this is the 1H55J mask revision. +if HAVE_CACHE_SPLIT +choice + prompt "Split Cache Configuration" + default CACHE_I + +config CACHE_I + bool "Instruction" + help + Use all of the ColdFire CPU cache memory as an instruction cache. + +config CACHE_D + bool "Data" + help + Use all of the ColdFire CPU cache memory as a data cache. + +config CACHE_BOTH + bool "Both" + help + Split the ColdFire CPU cache, and use half as an instruction cache + and half as a data cache. +endchoice +endif + +if HAVE_CACHE_CB +choice + prompt "Data cache mode" + default CACHE_WRITETHRU + +config CACHE_WRITETHRU + bool "Write-through" + help + The ColdFire CPU cache is set into Write-through mode. + +config CACHE_COPYBACK + bool "Copy-back" + help + The ColdFire CPU cache is set into Copy-back mode. +endchoice +endif + comment "Platform" config PILOT3 @@ -245,16 +321,16 @@ config XCOPILOT_BUGS Support the bugs of Xcopilot. config UC5272 - bool 'Arcturus Networks uC5272 dimm board support' - depends on M5272 - help - Support for the Arcturus Networks uC5272 dimm board. + bool 'Arcturus Networks uC5272 dimm board support' + depends on M5272 + help + Support for the Arcturus Networks uC5272 dimm board. config UC5282 - bool "Arcturus Networks uC5282 board support" - depends on M528x - help - Support for the Arcturus Networks uC5282 dimm board. + bool "Arcturus Networks uC5282 board support" + depends on M528x + help + Support for the Arcturus Networks uC5282 dimm board. config UCSIMM bool "uCsimm module support" @@ -279,7 +355,7 @@ config DIRECT_IO_ACCESS depends on (UCSIMM || UCDIMM || DRAGEN2) help Disable the CPU internal registers protection in user mode, - to allow a user application to read/write them. + to allow a user application to read/write them. config INIT_LCD bool "Initialize LCD" @@ -517,7 +593,7 @@ config EMAC_INC depends on (SOM5282EM) config SNEHA - bool + bool default y depends on CPU16B diff --git a/arch/m68knommu/Makefile b/arch/m68knommu/Makefile index 026ef16fa68e..589613fed31d 100644 --- a/arch/m68knommu/Makefile +++ b/arch/m68knommu/Makefile @@ -25,7 +25,7 @@ platform-$(CONFIG_M528x) := 528x platform-$(CONFIG_M5307) := 5307 platform-$(CONFIG_M532x) := 532x platform-$(CONFIG_M5407) := 5407 -platform-$(CONFIG_M548x) := 548x +platform-$(CONFIG_M54xx) := 54xx PLATFORM := $(platform-y) board-$(CONFIG_PILOT) := pilot @@ -74,7 +74,7 @@ cpuclass-$(CONFIG_M528x) := coldfire cpuclass-$(CONFIG_M5307) := coldfire cpuclass-$(CONFIG_M532x) := coldfire cpuclass-$(CONFIG_M5407) := coldfire -cpuclass-$(CONFIG_M548x) := coldfire +cpuclass-$(CONFIG_M54xx) := coldfire cpuclass-$(CONFIG_M68328) := 68328 cpuclass-$(CONFIG_M68EZ328) := 68328 cpuclass-$(CONFIG_M68VZ328) := 68328 @@ -91,18 +91,18 @@ export PLATFORM BOARD MODEL CPUCLASS # Some CFLAG additions based on specific CPU type. # cflags-$(CONFIG_M5206) := $(call cc-option,-mcpu=5206,-m5200) -cflags-$(CONFIG_M5206e) := $(call cc-option,-m5206e,-m5200) +cflags-$(CONFIG_M5206e) := $(call cc-option,-mcpu=5206e,-m5200) cflags-$(CONFIG_M520x) := $(call cc-option,-mcpu=5208,-m5200) cflags-$(CONFIG_M523x) := $(call cc-option,-mcpu=523x,-m5307) cflags-$(CONFIG_M5249) := $(call cc-option,-mcpu=5249,-m5200) cflags-$(CONFIG_M5271) := $(call cc-option,-mcpu=5271,-m5307) cflags-$(CONFIG_M5272) := $(call cc-option,-mcpu=5272,-m5307) cflags-$(CONFIG_M5275) := $(call cc-option,-mcpu=5275,-m5307) -cflags-$(CONFIG_M528x) := $(call cc-option,-m528x,-m5307) -cflags-$(CONFIG_M5307) := $(call cc-option,-m5307,-m5200) +cflags-$(CONFIG_M528x) := $(call cc-option,-mcpu=528x,-m5307) +cflags-$(CONFIG_M5307) := $(call cc-option,-mcpu=5307,-m5200) cflags-$(CONFIG_M532x) := $(call cc-option,-mcpu=532x,-m5307) -cflags-$(CONFIG_M5407) := $(call cc-option,-m5407,-m5200) -cflags-$(CONFIG_M548x) := $(call cc-option,-m5407,-m5200) +cflags-$(CONFIG_M5407) := $(call cc-option,-mcpu=5407,-m5200) +cflags-$(CONFIG_M54xx) := $(call cc-option,-mcpu=5475,-m5200) cflags-$(CONFIG_M68328) := -m68000 cflags-$(CONFIG_M68EZ328) := -m68000 cflags-$(CONFIG_M68VZ328) := -m68000 diff --git a/arch/m68knommu/kernel/setup.c b/arch/m68knommu/kernel/setup.c index c684adf5dc40..16b2de7f5101 100644 --- a/arch/m68knommu/kernel/setup.c +++ b/arch/m68knommu/kernel/setup.c @@ -55,55 +55,29 @@ void (*mach_halt)(void); void (*mach_power_off)(void); #ifdef CONFIG_M68328 - #define CPU "MC68328" +#define CPU_NAME "MC68328" #endif #ifdef CONFIG_M68EZ328 - #define CPU "MC68EZ328" +#define CPU_NAME "MC68EZ328" #endif #ifdef CONFIG_M68VZ328 - #define CPU "MC68VZ328" +#define CPU_NAME "MC68VZ328" #endif #ifdef CONFIG_M68360 - #define CPU "MC68360" +#define CPU_NAME "MC68360" #endif -#if defined(CONFIG_M5206) - #define CPU "COLDFIRE(m5206)" +#ifndef CPU_NAME +#define CPU_NAME "UNKNOWN" #endif -#if defined(CONFIG_M5206e) - #define CPU "COLDFIRE(m5206e)" -#endif -#if defined(CONFIG_M520x) - #define CPU "COLDFIRE(m520x)" -#endif -#if defined(CONFIG_M523x) - #define CPU "COLDFIRE(m523x)" -#endif -#if defined(CONFIG_M5249) - #define CPU "COLDFIRE(m5249)" -#endif -#if defined(CONFIG_M5271) - #define CPU "COLDFIRE(m5270/5271)" -#endif -#if defined(CONFIG_M5272) - #define CPU "COLDFIRE(m5272)" -#endif -#if defined(CONFIG_M5275) - #define CPU "COLDFIRE(m5274/5275)" -#endif -#if defined(CONFIG_M528x) - #define CPU "COLDFIRE(m5280/5282)" -#endif -#if defined(CONFIG_M5307) - #define CPU "COLDFIRE(m5307)" -#endif -#if defined(CONFIG_M532x) - #define CPU "COLDFIRE(m532x)" -#endif -#if defined(CONFIG_M5407) - #define CPU "COLDFIRE(m5407)" -#endif -#ifndef CPU - #define CPU "UNKNOWN" + +/* + * Different cores have different instruction execution timings. + * The old/traditional 68000 cores are basically all the same, at 16. + * The ColdFire cores vary a little, their values are defined in their + * headers. We default to the standard 68000 value here. + */ +#ifndef CPU_INSTR_PER_JIFFY +#define CPU_INSTR_PER_JIFFY 16 #endif extern int _stext, _etext, _sdata, _edata, _sbss, _ebss, _end; @@ -208,7 +182,7 @@ void __init setup_arch(char **cmdline_p) command_line[sizeof(command_line) - 1] = 0; #endif /* CONFIG_UBOOT */ - printk(KERN_INFO "\x0F\r\n\nuClinux/" CPU "\n"); + printk(KERN_INFO "\x0F\r\n\nuClinux/" CPU_NAME "\n"); #ifdef CONFIG_UCDIMM printk(KERN_INFO "uCdimm by Lineo, Inc. <www.lineo.com>\n"); @@ -257,11 +231,6 @@ void __init setup_arch(char **cmdline_p) memcpy(boot_command_line, command_line, COMMAND_LINE_SIZE); boot_command_line[COMMAND_LINE_SIZE-1] = 0; -#ifdef DEBUG - if (strlen(*cmdline_p)) - printk(KERN_DEBUG "Command line: '%s'\n", *cmdline_p); -#endif - #if defined(CONFIG_FRAMEBUFFER_CONSOLE) && defined(CONFIG_DUMMY_CONSOLE) conswitchp = &dummy_con; #endif @@ -303,15 +272,10 @@ static int show_cpuinfo(struct seq_file *m, void *v) char *cpu, *mmu, *fpu; u_long clockfreq; - cpu = CPU; + cpu = CPU_NAME; mmu = "none"; fpu = "none"; - -#ifdef CONFIG_COLDFIRE - clockfreq = (loops_per_jiffy * HZ) * 3; -#else - clockfreq = (loops_per_jiffy * HZ) * 16; -#endif + clockfreq = (loops_per_jiffy * HZ) * CPU_INSTR_PER_JIFFY; seq_printf(m, "CPU:\t\t%s\n" "MMU:\t\t%s\n" diff --git a/arch/m68knommu/mm/Makefile b/arch/m68knommu/mm/Makefile index fc91f254f51b..b54ab6b4b523 100644 --- a/arch/m68knommu/mm/Makefile +++ b/arch/m68knommu/mm/Makefile @@ -2,4 +2,4 @@ # Makefile for the linux m68knommu specific parts of the memory manager. # -obj-y += init.o fault.o memory.o kmap.o +obj-y += init.o kmap.o diff --git a/arch/m68knommu/mm/fault.c b/arch/m68knommu/mm/fault.c deleted file mode 100644 index bc05cf74d9c0..000000000000 --- a/arch/m68knommu/mm/fault.c +++ /dev/null @@ -1,57 +0,0 @@ -/* - * linux/arch/m68knommu/mm/fault.c - * - * Copyright (C) 1998 D. Jeff Dionne <jeff@lineo.ca>, - * Copyright (C) 2000 Lineo, Inc. (www.lineo.com) - * - * Based on: - * - * linux/arch/m68k/mm/fault.c - * - * Copyright (C) 1995 Hamish Macdonald - */ - -#include <linux/mman.h> -#include <linux/mm.h> -#include <linux/kernel.h> -#include <linux/ptrace.h> - -#include <asm/system.h> -#include <asm/pgtable.h> - -extern void die_if_kernel(char *, struct pt_regs *, long); - -/* - * This routine handles page faults. It determines the problem, and - * then passes it off to one of the appropriate routines. - * - * error_code: - * bit 0 == 0 means no page found, 1 means protection fault - * bit 1 == 0 means read, 1 means write - * - * If this routine detects a bad access, it returns 1, otherwise it - * returns 0. - */ -asmlinkage int do_page_fault(struct pt_regs *regs, unsigned long address, - unsigned long error_code) -{ -#ifdef DEBUG - printk(KERN_DEBUG "regs->sr=%#x, regs->pc=%#lx, address=%#lx, %ld\n", - regs->sr, regs->pc, address, error_code); -#endif - - /* - * Oops. The kernel tried to access some bad page. We'll have to - * terminate things with extreme prejudice. - */ - if ((unsigned long) address < PAGE_SIZE) - printk(KERN_ALERT "Unable to handle kernel NULL pointer dereference"); - else - printk(KERN_ALERT "Unable to handle kernel access"); - printk(KERN_ALERT " at virtual address %08lx\n", address); - die_if_kernel("Oops", regs, error_code); - do_exit(SIGKILL); - - return 1; -} - diff --git a/arch/m68knommu/mm/kmap.c b/arch/m68knommu/mm/kmap.c index 902c1dfda9e5..ece8d5ad4e6c 100644 --- a/arch/m68knommu/mm/kmap.c +++ b/arch/m68knommu/mm/kmap.c @@ -36,15 +36,6 @@ void iounmap(void *addr) } /* - * __iounmap unmaps nearly everything, so be careful - * it doesn't free currently pointer/page tables anymore but it - * wans't used anyway and might be added later. - */ -void __iounmap(void *addr, unsigned long size) -{ -} - -/* * Set new cache mode for some kernel address space. * The caller must push data for that range itself, if such data may already * be in the cache. diff --git a/arch/m68knommu/mm/memory.c b/arch/m68knommu/mm/memory.c deleted file mode 100644 index 8f7949e786d4..000000000000 --- a/arch/m68knommu/mm/memory.c +++ /dev/null @@ -1,33 +0,0 @@ -/* - * linux/arch/m68knommu/mm/memory.c - * - * Copyright (C) 1998 Kenneth Albanowski <kjahds@kjahds.com>, - * Copyright (C) 1999-2002, Greg Ungerer (gerg@snapgear.com) - * - * Based on: - * - * linux/arch/m68k/mm/memory.c - * - * Copyright (C) 1995 Hamish Macdonald - */ - -#include <linux/mm.h> -#include <linux/kernel.h> -#include <linux/string.h> -#include <linux/types.h> - -#include <asm/segment.h> -#include <asm/page.h> -#include <asm/pgtable.h> -#include <asm/system.h> - -/* - * Map some physical address range into the kernel address space. - */ - -unsigned long kernel_map(unsigned long paddr, unsigned long size, - int nocacheflag, unsigned long *memavailp ) -{ - return paddr; -} - diff --git a/arch/m68knommu/platform/548x/Makefile b/arch/m68knommu/platform/54xx/Makefile index e6035e7a2d3f..e6035e7a2d3f 100644 --- a/arch/m68knommu/platform/548x/Makefile +++ b/arch/m68knommu/platform/54xx/Makefile diff --git a/arch/m68knommu/platform/548x/config.c b/arch/m68knommu/platform/54xx/config.c index 9888846bd1cf..78130984db95 100644 --- a/arch/m68knommu/platform/548x/config.c +++ b/arch/m68knommu/platform/54xx/config.c @@ -1,7 +1,7 @@ /***************************************************************************/ /* - * linux/arch/m68knommu/platform/548x/config.c + * linux/arch/m68knommu/platform/54xx/config.c * * Copyright (C) 2010, Philippe De Muyter <phdm@macqel.be> */ @@ -15,13 +15,13 @@ #include <linux/io.h> #include <asm/machdep.h> #include <asm/coldfire.h> -#include <asm/m548xsim.h> +#include <asm/m54xxsim.h> #include <asm/mcfuart.h> -#include <asm/m548xgpt.h> +#include <asm/m54xxgpt.h> /***************************************************************************/ -static struct mcf_platform_uart m548x_uart_platform[] = { +static struct mcf_platform_uart m54xx_uart_platform[] = { { .mapbase = MCF_MBAR + MCFUART_BASE1, .irq = 64 + 35, @@ -40,20 +40,20 @@ static struct mcf_platform_uart m548x_uart_platform[] = { }, }; -static struct platform_device m548x_uart = { +static struct platform_device m54xx_uart = { .name = "mcfuart", .id = 0, - .dev.platform_data = m548x_uart_platform, + .dev.platform_data = m54xx_uart_platform, }; -static struct platform_device *m548x_devices[] __initdata = { - &m548x_uart, +static struct platform_device *m54xx_devices[] __initdata = { + &m54xx_uart, }; /***************************************************************************/ -static void __init m548x_uart_init_line(int line, int irq) +static void __init m54xx_uart_init_line(int line, int irq) { int rts_cts; @@ -72,18 +72,18 @@ static void __init m548x_uart_init_line(int line, int irq) MCF_MBAR + MCF_PAR_PSC(line)); } -static void __init m548x_uarts_init(void) +static void __init m54xx_uarts_init(void) { - const int nrlines = ARRAY_SIZE(m548x_uart_platform); + const int nrlines = ARRAY_SIZE(m54xx_uart_platform); int line; for (line = 0; (line < nrlines); line++) - m548x_uart_init_line(line, m548x_uart_platform[line].irq); + m54xx_uart_init_line(line, m54xx_uart_platform[line].irq); } /***************************************************************************/ -static void mcf548x_reset(void) +static void mcf54xx_reset(void) { /* disable interrupts and enable the watchdog */ asm("movew #0x2700, %sr\n"); @@ -97,8 +97,8 @@ static void mcf548x_reset(void) void __init config_BSP(char *commandp, int size) { - mach_reset = mcf548x_reset; - m548x_uarts_init(); + mach_reset = mcf54xx_reset; + m54xx_uarts_init(); } /***************************************************************************/ @@ -106,7 +106,7 @@ void __init config_BSP(char *commandp, int size) static int __init init_BSP(void) { - platform_add_devices(m548x_devices, ARRAY_SIZE(m548x_devices)); + platform_add_devices(m54xx_devices, ARRAY_SIZE(m54xx_devices)); return 0; } diff --git a/arch/m68knommu/platform/68328/ints.c b/arch/m68knommu/platform/68328/ints.c index 865852806a17..2a3af193ccd3 100644 --- a/arch/m68knommu/platform/68328/ints.c +++ b/arch/m68knommu/platform/68328/ints.c @@ -179,8 +179,8 @@ void __init init_IRQ(void) IMR = ~0; for (i = 0; (i < NR_IRQS); i++) { - set_irq_chip(irq, &intc_irq_chip); - set_irq_handler(irq, handle_level_irq); + set_irq_chip(i, &intc_irq_chip); + set_irq_handler(i, handle_level_irq); } } diff --git a/arch/m68knommu/platform/coldfire/Makefile b/arch/m68knommu/platform/coldfire/Makefile index 45f501fa4525..a8967baabd72 100644 --- a/arch/m68knommu/platform/coldfire/Makefile +++ b/arch/m68knommu/platform/coldfire/Makefile @@ -14,7 +14,7 @@ asflags-$(CONFIG_FULLDEBUG) := -DDEBUGGER_COMPATIBLE_CACHE=1 -obj-$(CONFIG_COLDFIRE) += clk.o dma.o entry.o vectors.o +obj-$(CONFIG_COLDFIRE) += cache.o clk.o dma.o entry.o vectors.o obj-$(CONFIG_M5206) += timers.o intc.o obj-$(CONFIG_M5206e) += timers.o intc.o obj-$(CONFIG_M520x) += pit.o intc-simr.o @@ -26,7 +26,7 @@ obj-$(CONFIG_M528x) += pit.o intc-2.o obj-$(CONFIG_M5307) += timers.o intc.o obj-$(CONFIG_M532x) += timers.o intc-simr.o obj-$(CONFIG_M5407) += timers.o intc.o -obj-$(CONFIG_M548x) += sltimers.o intc-2.o +obj-$(CONFIG_M54xx) += sltimers.o intc-2.o obj-y += pinmux.o gpio.o extra-y := head.o diff --git a/arch/m68knommu/platform/coldfire/cache.c b/arch/m68knommu/platform/coldfire/cache.c new file mode 100644 index 000000000000..235d3c4f4f0f --- /dev/null +++ b/arch/m68knommu/platform/coldfire/cache.c @@ -0,0 +1,48 @@ +/***************************************************************************/ + +/* + * cache.c -- general ColdFire Cache maintainence code + * + * Copyright (C) 2010, Greg Ungerer (gerg@snapgear.com) + */ + +/***************************************************************************/ + +#include <linux/kernel.h> +#include <asm/coldfire.h> +#include <asm/mcfsim.h> + +/***************************************************************************/ +#ifdef CACHE_PUSH +/***************************************************************************/ + +/* + * Use cpushl to push all dirty cache lines back to memory. + * Older versions of GAS don't seem to know how to generate the + * ColdFire cpushl instruction... Oh well, bit stuff it for now. + */ + +void mcf_cache_push(void) +{ + __asm__ __volatile__ ( + "clrl %%d0\n\t" + "1:\n\t" + "movel %%d0,%%a0\n\t" + "2:\n\t" + ".word 0xf468\n\t" + "addl %0,%%a0\n\t" + "cmpl %1,%%a0\n\t" + "blt 2b\n\t" + "addql #1,%%d0\n\t" + "cmpil %2,%%d0\n\t" + "bne 1b\n\t" + : /* No output */ + : "i" (CACHE_LINE_SIZE), + "i" (DCACHE_SIZE / CACHE_WAYS), + "i" (CACHE_WAYS) + : "d0", "a0" ); +} + +/***************************************************************************/ +#endif /* CACHE_PUSH */ +/***************************************************************************/ diff --git a/arch/m68knommu/platform/coldfire/entry.S b/arch/m68knommu/platform/coldfire/entry.S index e1debc8285ef..4ddfc3da70d8 100644 --- a/arch/m68knommu/platform/coldfire/entry.S +++ b/arch/m68knommu/platform/coldfire/entry.S @@ -36,13 +36,16 @@ #include <asm/asm-offsets.h> #include <asm/entry.h> +#ifdef CONFIG_COLDFIRE_SW_A7 +/* + * Define software copies of the supervisor and user stack pointers. + */ .bss - sw_ksp: .long 0 - sw_usp: .long 0 +#endif /* CONFIG_COLDFIRE_SW_A7 */ .text @@ -51,7 +54,6 @@ sw_usp: .globl ret_from_exception .globl ret_from_signal .globl sys_call_table -.globl ret_from_interrupt .globl inthandler .globl fasthandler @@ -140,20 +142,7 @@ Luser_return: jne Lwork_to_do /* still work to do */ Lreturn: - move #0x2700,%sr /* disable intrs */ - movel sw_usp,%a0 /* get usp */ - movel %sp@(PT_OFF_PC),%a0@- /* copy exception program counter */ - movel %sp@(PT_OFF_FORMATVEC),%a0@- /* copy exception format/vector/sr */ - moveml %sp@,%d1-%d5/%a0-%a2 - lea %sp@(32),%sp /* space for 8 regs */ - movel %sp@+,%d0 - addql #4,%sp /* orig d0 */ - addl %sp@+,%sp /* stk adj */ - addql #8,%sp /* remove exception */ - movel %sp,sw_ksp /* save ksp */ - subql #8,sw_usp /* set exception */ - movel sw_usp,%sp /* restore usp */ - rte + RESTORE_USER Lwork_to_do: movel %a0@(TI_FLAGS),%d1 /* get thread_info->flags */ @@ -191,31 +180,7 @@ ENTRY(inthandler) jbsr do_IRQ /* call high level irq handler */ lea %sp@(8),%sp /* pop args off stack */ - bra ret_from_interrupt /* this was fallthrough */ - -/* - * This is the fast interrupt handler (for certain hardware interrupt - * sources). Unlike the normal interrupt handler it just uses the - * current stack (doesn't care if it is user or kernel). It also - * doesn't bother doing the bottom half handlers. - */ -ENTRY(fasthandler) - SAVE_LOCAL - - movew %sp@(PT_OFF_FORMATVEC),%d0 - andl #0x03fc,%d0 /* mask out vector only */ - - movel %sp,%sp@- /* push regs arg */ - lsrl #2,%d0 /* calculate real vector # */ - movel %d0,%sp@- /* push vector number */ - jbsr do_IRQ /* call high level irq handler */ - lea %sp@(8),%sp /* pop args off stack */ - - RESTORE_LOCAL - -ENTRY(ret_from_interrupt) - /* the fasthandler is confusing me, haven't seen any user */ - jmp ret_from_exception + bra ret_from_exception /* * Beware - when entering resume, prev (the current task) is @@ -226,9 +191,8 @@ ENTRY(ret_from_interrupt) */ ENTRY(resume) movel %a0, %d1 /* get prev thread in d1 */ - - movel sw_usp,%d0 /* save usp */ - movel %d0,%a0@(TASK_THREAD+THREAD_USP) + RDUSP + movel %a2,%a0@(TASK_THREAD+THREAD_USP) SAVE_SWITCH_STACK movel %sp,%a0@(TASK_THREAD+THREAD_KSP) /* save kernel stack pointer */ @@ -236,5 +200,5 @@ ENTRY(resume) RESTORE_SWITCH_STACK movel %a1@(TASK_THREAD+THREAD_USP),%a0 /* restore thread user stack */ - movel %a0, sw_usp + WRUSP rts diff --git a/arch/m68knommu/platform/coldfire/head.S b/arch/m68knommu/platform/coldfire/head.S index 0b2d7c7adf79..d5977909ae5f 100644 --- a/arch/m68knommu/platform/coldfire/head.S +++ b/arch/m68knommu/platform/coldfire/head.S @@ -3,7 +3,7 @@ /* * head.S -- common startup code for ColdFire CPUs. * - * (C) Copyright 1999-2006, Greg Ungerer <gerg@snapgear.com>. + * (C) Copyright 1999-2010, Greg Ungerer <gerg@snapgear.com>. */ /*****************************************************************************/ @@ -13,7 +13,6 @@ #include <linux/init.h> #include <asm/asm-offsets.h> #include <asm/coldfire.h> -#include <asm/mcfcache.h> #include <asm/mcfsim.h> #include <asm/thread_info.h> @@ -173,10 +172,27 @@ _start: /* * Now that we know what the memory is, lets enable cache - * and get things moving. This is Coldfire CPU specific. + * and get things moving. This is Coldfire CPU specific. Not + * all version cores have identical cache register setup. But + * it is very similar. Define the exact settings in the headers + * then the code here is the same for all. */ - CACHE_ENABLE /* enable CPU cache */ - + movel #CACHE_INIT,%d0 /* invalidate whole cache */ + movec %d0,%CACR + nop + movel #ACR0_MODE,%d0 /* set RAM region for caching */ + movec %d0,%ACR0 + movel #ACR1_MODE,%d0 /* anything else to cache? */ + movec %d0,%ACR1 +#ifdef ACR2_MODE + movel #ACR2_MODE,%d0 + movec %d0,%ACR2 + movel #ACR3_MODE,%d0 + movec %d0,%ACR3 +#endif + movel #CACHE_MODE,%d0 /* enable cache */ + movec %d0,%CACR + nop #ifdef CONFIG_ROMFS_FS /* |