diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2016-10-06 03:18:20 +0200 |
---|---|---|
committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-10-06 03:18:20 +0200 |
commit | a6930aaee06755d1bdcfd943fbf614e4d92bb0c7 (patch) | |
tree | 488c83b9a888d967a7b8e31750e9295fc09bc9c3 | |
parent | Merge tag 'xtensa-20161005' of git://github.com/jcmvbkbc/linux-xtensa (diff) | |
parent | m68k: let clk_disable() return immediately if clk is NULL (diff) | |
download | linux-a6930aaee06755d1bdcfd943fbf614e4d92bb0c7.tar.xz linux-a6930aaee06755d1bdcfd943fbf614e4d92bb0c7.zip |
Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu
Pull m68knommu updates from Greg Ungerer:
"The bulk of the changes here are to clean up the ColdFire 5441x SoC
support so that it can run with MMU enabled. We have only supported it
with MMU disabled up to now.
There is also a few individual bug fixes across the ColdFire support
code"
* 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu:
m68k: let clk_disable() return immediately if clk is NULL
m68knommu: convert printk(KERN_INFO) to pr_info()
m68knommu: clean up uClinux boot log output
m68k: generalize uboot command line support
m68k: don't panic if no hardware FPU defined
m68k: only generate FPU instructions if CONFIG_FPU enabled
m68k: always make available dump_fpu()
m68k: generalize io memory region setup for ColdFire ACR registers
m68k: move ColdFire _bootmem_alloc code
m68k: report correct FPU type on ColdFire MMU platforms
m68k: set appropriate machine type for m5411x SoC platforms
m68k: move CONFIG_FPU set to per-CPU configuration
m68knommu: fix IO write size in nettel pin set
m68knommu: switch to using IO access methods in WildFire board code
m68knommu: fix early setup to not access variables
-rw-r--r-- | arch/m68k/Kconfig | 1 | ||||
-rw-r--r-- | arch/m68k/Kconfig.cpu | 6 | ||||
-rw-r--r-- | arch/m68k/coldfire/clk.c | 4 | ||||
-rw-r--r-- | arch/m68k/coldfire/head.S | 8 | ||||
-rw-r--r-- | arch/m68k/coldfire/m528x.c | 8 | ||||
-rw-r--r-- | arch/m68k/coldfire/m53xx.c | 8 | ||||
-rw-r--r-- | arch/m68k/coldfire/m54xx.c | 40 | ||||
-rw-r--r-- | arch/m68k/include/asm/bootinfo.h | 6 | ||||
-rw-r--r-- | arch/m68k/include/asm/m5441xsim.h | 4 | ||||
-rw-r--r-- | arch/m68k/include/asm/m54xxacr.h | 2 | ||||
-rw-r--r-- | arch/m68k/include/asm/m54xxsim.h | 4 | ||||
-rw-r--r-- | arch/m68k/include/asm/mcfmmu.h | 1 | ||||
-rw-r--r-- | arch/m68k/include/asm/nettel.h | 2 | ||||
-rw-r--r-- | arch/m68k/include/uapi/asm/bootinfo.h | 1 | ||||
-rw-r--r-- | arch/m68k/kernel/Makefile | 1 | ||||
-rw-r--r-- | arch/m68k/kernel/process.c | 56 | ||||
-rw-r--r-- | arch/m68k/kernel/setup_mm.c | 6 | ||||
-rw-r--r-- | arch/m68k/kernel/setup_no.c | 103 | ||||
-rw-r--r-- | arch/m68k/kernel/uboot.c | 107 | ||||
-rw-r--r-- | arch/m68k/mm/mcfmmu.c | 31 |
20 files changed, 222 insertions, 177 deletions
diff --git a/arch/m68k/Kconfig b/arch/m68k/Kconfig index 498b567f007b..d140206d5d29 100644 --- a/arch/m68k/Kconfig +++ b/arch/m68k/Kconfig @@ -14,7 +14,6 @@ config M68K select GENERIC_IOMAP select GENERIC_STRNCPY_FROM_USER if MMU select GENERIC_STRNLEN_USER if MMU - select FPU if MMU select ARCH_WANT_IPC_PARSE_VERSION select ARCH_USES_GETTIMEOFFSET if MMU && !COLDFIRE select HAVE_FUTEX_CMPXCHG if MMU && FUTEX diff --git a/arch/m68k/Kconfig.cpu b/arch/m68k/Kconfig.cpu index 967260f2eb1c..d2219f30b78f 100644 --- a/arch/m68k/Kconfig.cpu +++ b/arch/m68k/Kconfig.cpu @@ -62,6 +62,7 @@ config MCPU32 config M68020 bool "68020 support" depends on MMU + select FPU select CPU_HAS_ADDRESS_SPACES help If you anticipate running this kernel on a computer with a MC68020 @@ -72,6 +73,7 @@ config M68020 config M68030 bool "68030 support" depends on MMU && !MMU_SUN3 + select FPU select CPU_HAS_ADDRESS_SPACES help If you anticipate running this kernel on a computer with a MC68030 @@ -81,6 +83,7 @@ config M68030 config M68040 bool "68040 support" depends on MMU && !MMU_SUN3 + select FPU select CPU_HAS_ADDRESS_SPACES help If you anticipate running this kernel on a computer with a MC68LC040 @@ -91,6 +94,7 @@ config M68040 config M68060 bool "68060 support" depends on MMU && !MMU_SUN3 + select FPU select CPU_HAS_ADDRESS_SPACES help If you anticipate running this kernel on a computer with a MC68060 @@ -259,6 +263,7 @@ config M547x bool "MCF547x" select M54xx select MMU_COLDFIRE if MMU + select FPU if MMU select HAVE_CACHE_CB select HAVE_MBAR select CPU_NO_EFFICIENT_FFS @@ -268,6 +273,7 @@ config M547x config M548x bool "MCF548x" select MMU_COLDFIRE if MMU + select FPU if MMU select M54xx select HAVE_CACHE_CB select HAVE_MBAR diff --git a/arch/m68k/coldfire/clk.c b/arch/m68k/coldfire/clk.c index fddfdccae63b..1e3c7e9193d1 100644 --- a/arch/m68k/coldfire/clk.c +++ b/arch/m68k/coldfire/clk.c @@ -101,6 +101,10 @@ EXPORT_SYMBOL(clk_enable); void clk_disable(struct clk *clk) { unsigned long flags; + + if (!clk) + return; + spin_lock_irqsave(&clk_lock, flags); if ((--clk->enabled == 0) && clk->clk_ops) clk->clk_ops->disable(clk); diff --git a/arch/m68k/coldfire/head.S b/arch/m68k/coldfire/head.S index 73d92ea0ce65..bdb472c48401 100644 --- a/arch/m68k/coldfire/head.S +++ b/arch/m68k/coldfire/head.S @@ -280,10 +280,10 @@ _clear_bss: movel %d0,m68k_cputype /* Mark us as a ColdFire */ movel #MMU_COLDFIRE,%d0 movel %d0,m68k_mmutype - movel #FPU_COLDFIRE,%d0 - movel %d0,m68k_fputype - movel #MACH_M54XX,%d0 - movel %d0,m68k_machtype /* Mark us as a 54xx machine */ + movel #FPUTYPE,%d0 + movel %d0,m68k_fputype /* Mark FPU type */ + movel #MACHINE,%d0 + movel %d0,m68k_machtype /* Mark machine type */ lea init_task,%a2 /* Set "current" init task */ #endif diff --git a/arch/m68k/coldfire/m528x.c b/arch/m68k/coldfire/m528x.c index 45e947aeade4..12f9e370d8dd 100644 --- a/arch/m68k/coldfire/m528x.c +++ b/arch/m68k/coldfire/m528x.c @@ -102,14 +102,14 @@ void wildfiremod_halt(void) printk(KERN_INFO "WildFireMod hibernating...\n"); /* Set portE.5 to Digital IO */ - MCF5282_GPIO_PEPAR &= ~(1 << (5 * 2)); + writew(readw(MCFGPIO_PEPAR) & ~(1 << (5 * 2)), MCFGPIO_PEPAR); /* Make portE.5 an output */ - MCF5282_GPIO_DDRE |= (1 << 5); + writeb(readb(MCFGPIO_PDDR_E) | (1 << 5), MCFGPIO_PDDR_E); /* Now toggle portE.5 from low to high */ - MCF5282_GPIO_PORTE &= ~(1 << 5); - MCF5282_GPIO_PORTE |= (1 << 5); + writeb(readb(MCFGPIO_PODR_E) & ~(1 << 5), MCFGPIO_PODR_E); + writeb(readb(MCFGPIO_PODR_E) | (1 << 5), MCFGPIO_PODR_E); printk(KERN_EMERG "Failed to hibernate. Halting!\n"); } diff --git a/arch/m68k/coldfire/m53xx.c b/arch/m68k/coldfire/m53xx.c index 80879a7fe3d5..2502f63960bc 100644 --- a/arch/m68k/coldfire/m53xx.c +++ b/arch/m68k/coldfire/m53xx.c @@ -271,9 +271,6 @@ void __init config_BSP(char *commandp, int size) #define NAND_FLASH_ADDRESS (0xD0000000) -int sys_clk_khz = 0; -int sys_clk_mhz = 0; - void wtm_init(void); void scm_init(void); void gpio_init(void); @@ -286,9 +283,8 @@ int get_sys_clock (void); asmlinkage void __init sysinit(void) { - sys_clk_khz = clock_pll(0, 0); - sys_clk_mhz = sys_clk_khz/1000; - + clock_pll(0, 0); + wtm_init(); scm_init(); gpio_init(); diff --git a/arch/m68k/coldfire/m54xx.c b/arch/m68k/coldfire/m54xx.c index c32f76791f48..386df3b68cdf 100644 --- a/arch/m68k/coldfire/m54xx.c +++ b/arch/m68k/coldfire/m54xx.c @@ -25,7 +25,6 @@ #include <asm/m54xxgpt.h> #ifdef CONFIG_MMU #include <asm/mmu_context.h> -#include <linux/pfn.h> #endif /***************************************************************************/ @@ -78,47 +77,10 @@ static void mcf54xx_reset(void) /***************************************************************************/ -#ifdef CONFIG_MMU - -unsigned long num_pages; - -static void __init mcf54xx_bootmem_alloc(void) -{ - unsigned long start_pfn; - unsigned long memstart; - - /* _rambase and _ramend will be naturally page aligned */ - m68k_memory[0].addr = _rambase; - m68k_memory[0].size = _ramend - _rambase; - - /* compute total pages in system */ - num_pages = PFN_DOWN(_ramend - _rambase); - - /* page numbers */ - memstart = PAGE_ALIGN(_ramstart); - min_low_pfn = PFN_DOWN(_rambase); - start_pfn = PFN_DOWN(memstart); - max_pfn = max_low_pfn = PFN_DOWN(_ramend); - high_memory = (void *)_ramend; - - m68k_virt_to_node_shift = fls(_ramend - _rambase - 1) - 6; - module_fixup(NULL, __start_fixup, __stop_fixup); - - /* setup bootmem data */ - m68k_setup_node(0); - memstart += init_bootmem_node(NODE_DATA(0), start_pfn, - min_low_pfn, max_low_pfn); - free_bootmem_node(NODE_DATA(0), memstart, _ramend - memstart); -} - -#endif /* CONFIG_MMU */ - -/***************************************************************************/ - void __init config_BSP(char *commandp, int size) { #ifdef CONFIG_MMU - mcf54xx_bootmem_alloc(); + cf_bootmem_alloc(); mmu_context_init(); #endif mach_reset = mcf54xx_reset; diff --git a/arch/m68k/include/asm/bootinfo.h b/arch/m68k/include/asm/bootinfo.h index 8e213267f8e7..81c91af8ec6c 100644 --- a/arch/m68k/include/asm/bootinfo.h +++ b/arch/m68k/include/asm/bootinfo.h @@ -22,6 +22,12 @@ extern void save_bootinfo(const struct bi_record *bi); static inline void save_bootinfo(const struct bi_record *bi) {} #endif +#ifdef CONFIG_UBOOT +void process_uboot_commandline(char *commandp, int size); +#else +static inline void process_uboot_commandline(char *commandp, int size) {} +#endif + #endif /* __ASSEMBLY__ */ diff --git a/arch/m68k/include/asm/m5441xsim.h b/arch/m68k/include/asm/m5441xsim.h index cc798ab9524b..64f60be47066 100644 --- a/arch/m68k/include/asm/m5441xsim.h +++ b/arch/m68k/include/asm/m5441xsim.h @@ -10,6 +10,10 @@ #define CPU_NAME "COLDFIRE(m5441x)" #define CPU_INSTR_PER_JIFFY 2 #define MCF_BUSCLK (MCF_CLK / 2) +#define MACHINE MACH_M5441X +#define FPUTYPE 0 +#define IOMEMBASE 0xe0000000 +#define IOMEMSIZE 0x20000000 #include <asm/m54xxacr.h> diff --git a/arch/m68k/include/asm/m54xxacr.h b/arch/m68k/include/asm/m54xxacr.h index 59e171063c2f..c6ac05cda282 100644 --- a/arch/m68k/include/asm/m54xxacr.h +++ b/arch/m68k/include/asm/m54xxacr.h @@ -94,7 +94,7 @@ * register region as non-cacheable. And then we map all our RAM as * cacheable and supervisor access only. */ -#define ACR0_MODE (ACR_BA(CONFIG_MBAR)+ACR_ADMSK(0x1000000)+ \ +#define ACR0_MODE (ACR_BA(IOMEMBASE)+ACR_ADMSK(IOMEMSIZE)+ \ ACR_ENABLE+ACR_SUPER+ACR_CM_OFF_PRE+ACR_SP) #if defined(CONFIG_CACHE_COPYBACK) #define ACR1_MODE (ACR_BA(CONFIG_RAMBASE)+ACR_ADMSK(CONFIG_RAMSIZE)+ \ diff --git a/arch/m68k/include/asm/m54xxsim.h b/arch/m68k/include/asm/m54xxsim.h index a5fbd17ab0a5..73d937ff36eb 100644 --- a/arch/m68k/include/asm/m54xxsim.h +++ b/arch/m68k/include/asm/m54xxsim.h @@ -8,6 +8,10 @@ #define CPU_NAME "COLDFIRE(m54xx)" #define CPU_INSTR_PER_JIFFY 2 #define MCF_BUSCLK (MCF_CLK / 2) +#define MACHINE MACH_M54XX +#define FPUTYPE FPU_COLDFIRE +#define IOMEMBASE MCF_MBAR +#define IOMEMSIZE 0x01000000 #include <asm/m54xxacr.h> diff --git a/arch/m68k/include/asm/mcfmmu.h b/arch/m68k/include/asm/mcfmmu.h index 8824236e303f..10f9930ec49a 100644 --- a/arch/m68k/include/asm/mcfmmu.h +++ b/arch/m68k/include/asm/mcfmmu.h @@ -105,6 +105,7 @@ static inline void mmu_write(u32 a, u32 v) __asm__ __volatile__ ("nop"); } +void cf_bootmem_alloc(void); int cf_tlb_miss(struct pt_regs *regs, int write, int dtlb, int extension_word); #endif diff --git a/arch/m68k/include/asm/nettel.h b/arch/m68k/include/asm/nettel.h index 2a7a7667d807..926375d538ec 100644 --- a/arch/m68k/include/asm/nettel.h +++ b/arch/m68k/include/asm/nettel.h @@ -92,7 +92,7 @@ static __inline__ unsigned int mcf_getppdata(void) static __inline__ void mcf_setppdata(unsigned int mask, unsigned int bits) { - write((readw(MCFSIM_PBDAT) & ~mask) | bits, MCFSIM_PBDAT); + writew((readw(MCFSIM_PBDAT) & ~mask) | bits, MCFSIM_PBDAT); } #endif diff --git a/arch/m68k/include/uapi/asm/bootinfo.h b/arch/m68k/include/uapi/asm/bootinfo.h index cdeb26a015b0..a48cf544c762 100644 --- a/arch/m68k/include/uapi/asm/bootinfo.h +++ b/arch/m68k/include/uapi/asm/bootinfo.h @@ -81,6 +81,7 @@ struct mem_info { #define MACH_Q40 10 #define MACH_SUN3X 11 #define MACH_M54XX 12 +#define MACH_M5441X 13 /* diff --git a/arch/m68k/kernel/Makefile b/arch/m68k/kernel/Makefile index e47778f8588d..8a1c4d3f91c8 100644 --- a/arch/m68k/kernel/Makefile +++ b/arch/m68k/kernel/Makefile @@ -24,6 +24,7 @@ obj-$(CONFIG_HAS_DMA) += dma.o obj-$(CONFIG_KEXEC) += machine_kexec.o relocate_kernel.o obj-$(CONFIG_BOOTINFO_PROC) += bootinfo_proc.o +obj-$(CONFIG_UBOOT) += uboot.o obj-$(CONFIG_EARLY_PRINTK) += early_printk.o diff --git a/arch/m68k/kernel/process.c b/arch/m68k/kernel/process.c index c55ff719fa72..4ba1ae7345c3 100644 --- a/arch/m68k/kernel/process.c +++ b/arch/m68k/kernel/process.c @@ -203,11 +203,8 @@ int copy_thread(unsigned long clone_flags, unsigned long usp, } /* Fill in the fpu structure for a core dump. */ -#ifdef CONFIG_FPU int dump_fpu (struct pt_regs *regs, struct user_m68kfp_struct *fpu) { - char fpustate[216]; - if (FPU_IS_EMU) { int i; @@ -222,37 +219,40 @@ int dump_fpu (struct pt_regs *regs, struct user_m68kfp_struct *fpu) return 1; } - /* First dump the fpu context to avoid protocol violation. */ - asm volatile ("fsave %0" :: "m" (fpustate[0]) : "memory"); - if (!CPU_IS_060 ? !fpustate[0] : !fpustate[2]) - return 0; + if (IS_ENABLED(CONFIG_FPU)) { + char fpustate[216]; - if (CPU_IS_COLDFIRE) { - asm volatile ("fmovel %/fpiar,%0\n\t" - "fmovel %/fpcr,%1\n\t" - "fmovel %/fpsr,%2\n\t" - "fmovemd %/fp0-%/fp7,%3" - : - : "m" (fpu->fpcntl[0]), - "m" (fpu->fpcntl[1]), - "m" (fpu->fpcntl[2]), - "m" (fpu->fpregs[0]) - : "memory"); - } else { - asm volatile ("fmovem %/fpiar/%/fpcr/%/fpsr,%0" - : - : "m" (fpu->fpcntl[0]) - : "memory"); - asm volatile ("fmovemx %/fp0-%/fp7,%0" - : - : "m" (fpu->fpregs[0]) - : "memory"); + /* First dump the fpu context to avoid protocol violation. */ + asm volatile ("fsave %0" :: "m" (fpustate[0]) : "memory"); + if (!CPU_IS_060 ? !fpustate[0] : !fpustate[2]) + return 0; + + if (CPU_IS_COLDFIRE) { + asm volatile ("fmovel %/fpiar,%0\n\t" + "fmovel %/fpcr,%1\n\t" + "fmovel %/fpsr,%2\n\t" + "fmovemd %/fp0-%/fp7,%3" + : + : "m" (fpu->fpcntl[0]), + "m" (fpu->fpcntl[1]), + "m" (fpu->fpcntl[2]), + "m" (fpu->fpregs[0]) + : "memory"); + } else { + asm volatile ("fmovem %/fpiar/%/fpcr/%/fpsr,%0" + : + : "m" (fpu->fpcntl[0]) + : "memory"); + asm volatile ("fmovemx %/fp0-%/fp7,%0" + : + : "m" (fpu->fpregs[0]) + : "memory"); + } } return 1; } EXPORT_SYMBOL(dump_fpu); -#endif /* CONFIG_FPU */ unsigned long get_wchan(struct task_struct *p) { diff --git a/arch/m68k/kernel/setup_mm.c b/arch/m68k/kernel/setup_mm.c index 50633c38f1e2..7a2c21212820 100644 --- a/arch/m68k/kernel/setup_mm.c +++ b/arch/m68k/kernel/setup_mm.c @@ -245,7 +245,7 @@ void __init setup_arch(char **cmdline_p) * We should really do our own FPU check at startup. * [what do we do with buggy 68LC040s? if we have problems * with them, we should add a test to check_bugs() below] */ -#ifndef CONFIG_M68KFPU_EMU_ONLY +#if defined(CONFIG_FPU) && !defined(CONFIG_M68KFPU_EMU_ONLY) /* clear the fpu if we have one */ if (m68k_fputype & (FPU_68881|FPU_68882|FPU_68040|FPU_68060|FPU_COLDFIRE)) { volatile int zero = 0; @@ -274,6 +274,7 @@ void __init setup_arch(char **cmdline_p) strncpy(m68k_command_line, CONFIG_BOOTPARAM_STRING, CL_SIZE); m68k_command_line[CL_SIZE - 1] = 0; #endif /* CONFIG_BOOTPARAM */ + process_uboot_commandline(&m68k_command_line[0], CL_SIZE); *cmdline_p = m68k_command_line; memcpy(boot_command_line, *cmdline_p, CL_SIZE); @@ -341,6 +342,7 @@ void __init setup_arch(char **cmdline_p) #endif #ifdef CONFIG_COLDFIRE case MACH_M54XX: + case MACH_M5441X: config_BSP(NULL, 0); break; #endif @@ -548,7 +550,7 @@ module_init(proc_hardware_init); void check_bugs(void) { -#ifndef CONFIG_M68KFPU_EMU +#if defined(CONFIG_FPU) && !defined(CONFIG_M68KFPU_EMU) if (m68k_fputype == 0) { pr_emerg("*** YOU DO NOT HAVE A FLOATING POINT UNIT, " "WHICH IS REQUIRED BY LINUX/M68K ***\n"); diff --git a/arch/m68k/kernel/setup_no.c b/arch/m68k/kernel/setup_no.c index 9309789215a8..8afe6f651c1c 100644 --- a/arch/m68k/kernel/setup_no.c +++ b/arch/m68k/kernel/setup_no.c @@ -34,6 +34,7 @@ #include <linux/rtc.h> #include <asm/setup.h> +#include <asm/bootinfo.h> #include <asm/irq.h> #include <asm/machdep.h> #include <asm/pgtable.h> @@ -82,69 +83,6 @@ void (*mach_power_off)(void); #define CPU_INSTR_PER_JIFFY 16 #endif -#if defined(CONFIG_UBOOT) -/* - * parse_uboot_commandline - * - * Copies u-boot commandline arguments and store them in the proper linux - * variables. - * - * Assumes: - * _init_sp global contains the address in the stack pointer when the - * kernel starts (see head.S::_start) - * - * U-Boot calling convention: - * (*kernel) (kbd, initrd_start, initrd_end, cmd_start, cmd_end); - * - * _init_sp can be parsed as such - * - * _init_sp+00 = u-boot cmd after jsr into kernel (skip) - * _init_sp+04 = &kernel board_info (residual data) - * _init_sp+08 = &initrd_start - * _init_sp+12 = &initrd_end - * _init_sp+16 = &cmd_start - * _init_sp+20 = &cmd_end - * - * This also assumes that the memory locations pointed to are still - * unmodified. U-boot places them near the end of external SDRAM. - * - * Argument(s): - * commandp = the linux commandline arg container to fill. - * size = the sizeof commandp. - * - * Returns: - */ -static void __init parse_uboot_commandline(char *commandp, int size) -{ - extern unsigned long _init_sp; - unsigned long *sp; - unsigned long uboot_kbd; - unsigned long uboot_initrd_start, uboot_initrd_end; - unsigned long uboot_cmd_start, uboot_cmd_end; - - - sp = (unsigned long *)_init_sp; - uboot_kbd = sp[1]; - uboot_initrd_start = sp[2]; - uboot_initrd_end = sp[3]; - uboot_cmd_start = sp[4]; - uboot_cmd_end = sp[5]; - - if (uboot_cmd_start && uboot_cmd_end) - strncpy(commandp, (const char *)uboot_cmd_start, size); -#if defined(CONFIG_BLK_DEV_INITRD) - if (uboot_initrd_start && uboot_initrd_end && - (uboot_initrd_end > uboot_initrd_start)) { - initrd_start = uboot_initrd_start; - initrd_end = uboot_initrd_end; - ROOT_DEV = Root_RAM0; - printk(KERN_INFO "initrd at 0x%lx:0x%lx\n", - initrd_start, initrd_end); - } -#endif /* if defined(CONFIG_BLK_DEV_INITRD) */ -} -#endif /* #if defined(CONFIG_UBOOT) */ - void __init setup_arch(char **cmdline_p) { int bootmap_size; @@ -164,53 +102,38 @@ void __init setup_arch(char **cmdline_p) command_line[sizeof(command_line) - 1] = 0; #endif /* CONFIG_BOOTPARAM */ -#if defined(CONFIG_UBOOT) - /* CONFIG_UBOOT and CONFIG_BOOTPARAM defined, concatenate cmdline */ - #if defined(CONFIG_BOOTPARAM) - /* Add the whitespace separator */ - command_line[strlen(CONFIG_BOOTPARAM_STRING)] = ' '; - /* Parse uboot command line into the rest of the buffer */ - parse_uboot_commandline( - &command_line[(strlen(CONFIG_BOOTPARAM_STRING)+1)], - (sizeof(command_line) - - (strlen(CONFIG_BOOTPARAM_STRING)+1))); - /* Only CONFIG_UBOOT defined, create cmdline */ - #else - parse_uboot_commandline(&command_line[0], sizeof(command_line)); - #endif /* CONFIG_BOOTPARAM */ - command_line[sizeof(command_line) - 1] = 0; -#endif /* CONFIG_UBOOT */ + process_uboot_commandline(&command_line[0], sizeof(command_line)); - printk(KERN_INFO "\x0F\r\n\nuClinux/" CPU_NAME "\n"); + pr_info("uClinux with CPU " CPU_NAME "\n"); #ifdef CONFIG_UCDIMM - printk(KERN_INFO "uCdimm by Lineo, Inc. <www.lineo.com>\n"); + pr_info("uCdimm by Lineo, Inc. <www.lineo.com>\n"); #endif #ifdef CONFIG_M68VZ328 - printk(KERN_INFO "M68VZ328 support by Evan Stawnyczy <e@lineo.ca>\n"); + pr_info("M68VZ328 support by Evan Stawnyczy <e@lineo.ca>\n"); #endif #ifdef CONFIG_COLDFIRE - printk(KERN_INFO "COLDFIRE port done by Greg Ungerer, gerg@snapgear.com\n"); + pr_info("COLDFIRE port done by Greg Ungerer, gerg@snapgear.com\n"); #ifdef CONFIG_M5307 - printk(KERN_INFO "Modified for M5307 by Dave Miller, dmiller@intellistor.com\n"); + pr_info("Modified for M5307 by Dave Miller, dmiller@intellistor.com\n"); #endif #ifdef CONFIG_ELITE - printk(KERN_INFO "Modified for M5206eLITE by Rob Scott, rscott@mtrob.fdns.net\n"); + pr_info("Modified for M5206eLITE by Rob Scott, rscott@mtrob.fdns.net\n"); #endif #endif - printk(KERN_INFO "Flat model support (C) 1998,1999 Kenneth Albanowski, D. Jeff Dionne\n"); + pr_info("Flat model support (C) 1998,1999 Kenneth Albanowski, D. Jeff Dionne\n"); #if defined( CONFIG_PILOT ) && defined( CONFIG_M68328 ) - printk(KERN_INFO "TRG SuperPilot FLASH card support <info@trgnet.com>\n"); + pr_info("TRG SuperPilot FLASH card support <info@trgnet.com>\n"); #endif #if defined( CONFIG_PILOT ) && defined( CONFIG_M68EZ328 ) - printk(KERN_INFO "PalmV support by Lineo Inc. <jeff@uclinux.com>\n"); + pr_info("PalmV support by Lineo Inc. <jeff@uclinux.com>\n"); #endif #ifdef CONFIG_DRAGEN2 - printk(KERN_INFO "DragonEngine II board support by Georges Menie\n"); + pr_info("DragonEngine II board support by Georges Menie\n"); #endif #ifdef CONFIG_M5235EVB - printk(KERN_INFO "Motorola M5235EVB support (C)2005 Syn-tech Systems, Inc. (Jate Sujjavanich)\n"); + pr_info("Motorola M5235EVB support (C)2005 Syn-tech Systems, Inc. (Jate Sujjavanich)\n"); #endif pr_debug("KERNEL -> TEXT=0x%p-0x%p DATA=0x%p-0x%p BSS=0x%p-0x%p\n", diff --git a/arch/m68k/kernel/uboot.c b/arch/m68k/kernel/uboot.c new file mode 100644 index 000000000000..b3536a82a262 --- /dev/null +++ b/arch/m68k/kernel/uboot.c @@ -0,0 +1,107 @@ +/* + * uboot.c -- uboot arguments support + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file COPYING in the main directory of this archive + * for more details. + */ + +#include <linux/kernel.h> +#include <linux/sched.h> +#include <linux/delay.h> +#include <linux/interrupt.h> +#include <linux/fb.h> +#include <linux/module.h> +#include <linux/mm.h> +#include <linux/console.h> +#include <linux/errno.h> +#include <linux/string.h> +#include <linux/bootmem.h> +#include <linux/seq_file.h> +#include <linux/init.h> +#include <linux/initrd.h> +#include <linux/root_dev.h> +#include <linux/rtc.h> + +#include <asm/setup.h> +#include <asm/irq.h> +#include <asm/machdep.h> +#include <asm/pgtable.h> +#include <asm/sections.h> + +/* + * parse_uboot_commandline + * + * Copies u-boot commandline arguments and store them in the proper linux + * variables. + * + * Assumes: + * _init_sp global contains the address in the stack pointer when the + * kernel starts (see head.S::_start) + * + * U-Boot calling convention: + * (*kernel) (kbd, initrd_start, initrd_end, cmd_start, cmd_end); + * + * _init_sp can be parsed as such + * + * _init_sp+00 = u-boot cmd after jsr into kernel (skip) + * _init_sp+04 = &kernel board_info (residual data) + * _init_sp+08 = &initrd_start + * _init_sp+12 = &initrd_end + * _init_sp+16 = &cmd_start + * _init_sp+20 = &cmd_end + * + * This also assumes that the memory locations pointed to are still + * unmodified. U-boot places them near the end of external SDRAM. + * + * Argument(s): + * commandp = the linux commandline arg container to fill. + * size = the sizeof commandp. + * + * Returns: + */ +static void __init parse_uboot_commandline(char *commandp, int size) +{ + extern unsigned long _init_sp; + unsigned long *sp; + unsigned long uboot_kbd; + unsigned long uboot_initrd_start, uboot_initrd_end; + unsigned long uboot_cmd_start, uboot_cmd_end; + + sp = (unsigned long *)_init_sp; + uboot_kbd = sp[1]; + uboot_initrd_start = sp[2]; + uboot_initrd_end = sp[3]; + uboot_cmd_start = sp[4]; + uboot_cmd_end = sp[5]; + + if (uboot_cmd_start && uboot_cmd_end) + strncpy(commandp, (const char *)uboot_cmd_start, size); +#if defined(CONFIG_BLK_DEV_INITRD) + if (uboot_initrd_start && uboot_initrd_end && + (uboot_initrd_end > uboot_initrd_start)) { + initrd_start = uboot_initrd_start; + initrd_end = uboot_initrd_end; + ROOT_DEV = Root_RAM0; + printk(KERN_INFO "initrd at 0x%lx:0x%lx\n", + initrd_start, initrd_end); + } +#endif /* if defined(CONFIG_BLK_DEV_INITRD) */ +} + +__init void process_uboot_commandline(char *commandp, int size) +{ + int len, n; + + n = strnlen(commandp, size); + commandp += n; + len = size - n; + if (len) { + /* Add the whitespace separator */ + *commandp++ = ' '; + len--; + } + + parse_uboot_commandline(commandp, len); + commandp[size - 1] = 0; +} diff --git a/arch/m68k/mm/mcfmmu.c b/arch/m68k/mm/mcfmmu.c index f58fafe7e4c9..87131cd3bc8f 100644 --- a/arch/m68k/mm/mcfmmu.c +++ b/arch/m68k/mm/mcfmmu.c @@ -27,7 +27,7 @@ mm_context_t next_mmu_context; unsigned long context_map[LAST_CONTEXT / BITS_PER_LONG + 1]; atomic_t nr_free_contexts; struct mm_struct *context_mm[LAST_CONTEXT+1]; -extern unsigned long num_pages; +unsigned long num_pages; /* * ColdFire paging_init derived from sun3. @@ -150,6 +150,35 @@ int cf_tlb_miss(struct pt_regs *regs, int write, int dtlb, int extension_word) return 0; } +void __init cf_bootmem_alloc(void) +{ + unsigned long start_pfn; + unsigned long memstart; + + /* _rambase and _ramend will be naturally page aligned */ + m68k_memory[0].addr = _rambase; + m68k_memory[0].size = _ramend - _rambase; + + /* compute total pages in system */ + num_pages = PFN_DOWN(_ramend - _rambase); + + /* page numbers */ + memstart = PAGE_ALIGN(_ramstart); + min_low_pfn = PFN_DOWN(_rambase); + start_pfn = PFN_DOWN(memstart); + max_pfn = max_low_pfn = PFN_DOWN(_ramend); + high_memory = (void *)_ramend; + + m68k_virt_to_node_shift = fls(_ramend - _rambase - 1) - 6; + module_fixup(NULL, __start_fixup, __stop_fixup); + + /* setup bootmem data */ + m68k_setup_node(0); + memstart += init_bootmem_node(NODE_DATA(0), start_pfn, + min_low_pfn, max_low_pfn); + free_bootmem_node(NODE_DATA(0), memstart, _ramend - memstart); +} + /* * Initialize the context management stuff. * The following was taken from arch/ppc/mmu_context.c |