depends on !XIP_KERNEL && MMU
depends on !ARCH_REALVIEW || !SPARSEMEM
help
- Patch phys-to-virt translation functions at runtime according to
- the position of the kernel in system memory.
+ Patch phys-to-virt and virt-to-phys translation functions at
+ boot and module load time according to the position of the
+ kernel in system memory.
- This can only be used with non-XIP with MMU kernels where
- the base of physical memory is at a 16MB boundary.
+ This can only be used with non-XIP MMU kernels where the base
+ of physical memory is at a 16MB boundary, or theoretically 64K
+ for the MSM machine class.
config ARM_PATCH_PHYS_VIRT_16BIT
def_bool y
depends on ARM_PATCH_PHYS_VIRT && ARCH_MSM
+ help
+ This option extends the physical to virtual translation patching
+ to allow physical memory down to a theoretical minimum of 64K
+ boundaries.
source "init/Kconfig"
depends on MMU
select CPU_V6
select ARM_AMBA
+ select ARM_TIMER_SP804
select CLKDEV_LOOKUP
select GENERIC_CLOCKEVENTS
select ARCH_WANT_OPTIONAL_GPIOLIB
select GENERIC_CLOCKEVENTS
select ARCH_REQUIRE_GPIOLIB
select CLKDEV_LOOKUP
+ select CLKSRC_MMIO
select HAVE_SCHED_CLOCK
help
Support for Freescale MXC/iMX-based family of processors
select GENERIC_CLOCKEVENTS
select ARCH_REQUIRE_GPIOLIB
select CLKDEV_LOOKUP
+ select CLKSRC_MMIO
help
Support for Freescale MXS-based family of processors
-config ARCH_STMP3XXX
- bool "Freescale STMP3xxx"
- select CPU_ARM926T
- select CLKDEV_LOOKUP
- select ARCH_REQUIRE_GPIOLIB
- select GENERIC_CLOCKEVENTS
- select USB_ARCH_HAS_EHCI
- help
- Support for systems based on the Freescale 3xxx CPUs.
-
config ARCH_NETX
bool "Hilscher NetX based"
+ select CLKSRC_MMIO
select CPU_ARM926T
select ARM_VIC
select GENERIC_CLOCKEVENTS
config ARCH_IXP4XX
bool "IXP4xx-based"
depends on MMU
+ select CLKSRC_MMIO
select CPU_XSCALE
select GENERIC_GPIO
select GENERIC_CLOCKEVENTS
config ARCH_DOVE
bool "Marvell Dove"
- select CPU_V6K
+ select CPU_V7
select PCI
select ARCH_REQUIRE_GPIOLIB
select GENERIC_CLOCKEVENTS
config ARCH_LPC32XX
bool "NXP LPC32XX"
+ select CLKSRC_MMIO
select CPU_ARM926T
select ARCH_REQUIRE_GPIOLIB
select HAVE_IDE
Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
System-on-Chip devices.
-config ARCH_NS9XXX
- bool "NetSilicon NS9xxx"
- select CPU_ARM926T
- select GENERIC_GPIO
- select GENERIC_CLOCKEVENTS
- select HAVE_CLK
- help
- Say Y here if you intend to run this kernel on a NetSilicon NS9xxx
- System.
-
- <http://www.digi.com/products/microprocessors/index.jsp>
-
config ARCH_W90X900
bool "Nuvoton W90X900 CPU"
select CPU_ARM926T
select ARCH_REQUIRE_GPIOLIB
select CLKDEV_LOOKUP
+ select CLKSRC_MMIO
select GENERIC_CLOCKEVENTS
help
Support for Nuvoton (Winbond logic dept.) ARM9 processor,
config ARCH_TEGRA
bool "NVIDIA Tegra"
select CLKDEV_LOOKUP
+ select CLKSRC_MMIO
select GENERIC_TIME
select GENERIC_CLOCKEVENTS
select GENERIC_GPIO
select ARCH_MTD_XIP
select ARCH_HAS_CPUFREQ
select CLKDEV_LOOKUP
+ select CLKSRC_MMIO
select ARCH_REQUIRE_GPIOLIB
select GENERIC_CLOCKEVENTS
select HAVE_SCHED_CLOCK
config ARCH_SA1100
bool "SA1100-based"
+ select CLKSRC_MMIO
select CPU_SA1100
select ISA
select ARCH_SPARSEMEM_ENABLE
config ARCH_TCC_926
bool "Telechips TCC ARM926-based systems"
+ select CLKSRC_MMIO
select CPU_ARM926T
select HAVE_CLK
select CLKDEV_LOOKUP
config ARCH_U300
bool "ST-Ericsson U300 Series"
depends on MMU
+ select CLKSRC_MMIO
select CPU_ARM926T
select HAVE_SCHED_CLOCK
select HAVE_TCM
select HAVE_IDE
select CLKDEV_LOOKUP
select GENERIC_ALLOCATOR
+ select GENERIC_IRQ_CHIP
select ARCH_HAS_HOLES_MEMORYMODEL
help
Support for TI's DaVinci platform.
select ARM_AMBA
select ARCH_REQUIRE_GPIOLIB
select CLKDEV_LOOKUP
+ select CLKSRC_MMIO
select GENERIC_CLOCKEVENTS
select HAVE_CLK
help
source "arch/arm/mach-nomadik/Kconfig"
source "arch/arm/plat-nomadik/Kconfig"
-source "arch/arm/mach-ns9xxx/Kconfig"
-
source "arch/arm/mach-nuc93x/Kconfig"
source "arch/arm/plat-omap/Kconfig"
source "arch/arm/mach-shmobile/Kconfig"
-source "arch/arm/plat-stmp3xxx/Kconfig"
-
source "arch/arm/mach-tegra/Kconfig"
source "arch/arm/mach-u300/Kconfig"
config PLAT_ORION
bool
+ select CLKSRC_MMIO
+ select GENERIC_IRQ_CHIP
select HAVE_SCHED_CLOCK
config PLAT_PXA
config ARM_TIMER_SP804
bool
+ select CLKSRC_MMIO
source arch/arm/mm/Kconfig
source "kernel/time/Kconfig"
config SMP
- bool "Symmetric Multi-Processing (EXPERIMENTAL)"
- depends on EXPERIMENTAL
+ bool "Symmetric Multi-Processing"
depends on CPU_V6K || CPU_V7
depends on GENERIC_CLOCKEVENTS
depends on REALVIEW_EB_ARM11MP || REALVIEW_EB_A9MP || \
def_bool ARCH_SPARSEMEM_ENABLE
config HIGHMEM
- bool "High Memory Support (EXPERIMENTAL)"
- depends on MMU && EXPERIMENTAL
+ bool "High Memory Support"
+ depends on MMU
help
The address space of ARM processors is only 4 Gigabytes large
and it has to accommodate user address space, kernel address
menu "Boot options"
+ config USE_OF
+ bool "Flattened Device Tree support"
+ select OF
+ select OF_EARLY_FLATTREE
+ help
+ Include support for flattened device tree machine descriptions.
+
# Compressed boot loader in ROM. Yes, we really want to ask about
# TEXT and BSS so we preserve their values in the config files.
config ZBOOT_ROM_TEXT
time by entering them here. As a minimum, you should specify the
memory size and the root device (e.g., mem=64M root=/dev/nfs).
+choice
+ prompt "Kernel command line type" if CMDLINE != ""
+ default CMDLINE_FROM_BOOTLOADER
+
+config CMDLINE_FROM_BOOTLOADER
+ bool "Use bootloader kernel arguments if available"
+ help
+ Uses the command-line options passed by the boot loader. If
+ the boot loader doesn't provide any, the default kernel command
+ string provided in CMDLINE will be used.
+
+config CMDLINE_EXTEND
+ bool "Extend bootloader kernel arguments"
+ help
+ The command-line arguments provided by the boot loader will be
+ appended to the default kernel command string.
+
config CMDLINE_FORCE
bool "Always use the default kernel command string"
- depends on CMDLINE != ""
help
Always use the default kernel command string, even if the boot
loader passes other arguments to the kernel.
This is useful if you cannot or don't want to change the
command-line options your boot loader passes to the kernel.
-
- If unsure, say N.
+endchoice
config XIP_KERNEL
bool "Kernel Execute-In-Place from ROM"
source "kernel/power/Kconfig"
config ARCH_SUSPEND_POSSIBLE
- depends on !ARCH_S5P64X0 && !ARCH_S5P6442
+ depends on !ARCH_S5P64X0 && !ARCH_S5P6442 && !ARCH_S5PC100
depends on CPU_ARM920T || CPU_ARM926T || CPU_SA1100 || \
CPU_V6 || CPU_V6K || CPU_V7 || CPU_XSC3 || CPU_XSCALE
def_bool y
#include <linux/screen_info.h>
#include <linux/init.h>
#include <linux/kexec.h>
+ #include <linux/of_fdt.h>
#include <linux/crash_dump.h>
#include <linux/root_dev.h>
#include <linux/cpu.h>
#include <asm/cachetype.h>
#include <asm/tlbflush.h>
+ #include <asm/prom.h>
#include <asm/mach/arch.h>
#include <asm/mach/irq.h>
#include <asm/mach/time.h>
*/
extern struct proc_info_list *lookup_processor_type(unsigned int);
- static void __init early_print(const char *str, ...)
+ void __init early_print(const char *str, ...)
{
extern void printascii(const char *);
char buf[256];
: "r14");
}
- static struct machine_desc * __init setup_machine(unsigned int nr)
+ void __init dump_machine_table(void)
{
- extern struct machine_desc __arch_info_begin[], __arch_info_end[];
struct machine_desc *p;
- /*
- * locate machine in the list of supported machines.
- */
- for (p = __arch_info_begin; p < __arch_info_end; p++)
- if (nr == p->nr) {
- printk("Machine: %s\n", p->name);
- return p;
- }
-
- early_print("\n"
- "Error: unrecognized/unsupported machine ID (r1 = 0x%08x).\n\n"
- "Available machine support:\n\nID (hex)\tNAME\n", nr);
-
- for (p = __arch_info_begin; p < __arch_info_end; p++)
+ early_print("Available machine support:\n\nID (hex)\tNAME\n");
+ for_each_machine_desc(p)
early_print("%08x\t%s\n", p->nr, p->name);
early_print("\nPlease check your kernel config and/or bootloader.\n");
/* can't use cpu_relax() here as it may require MMU setup */;
}
- static int __init arm_add_memory(phys_addr_t start, unsigned long size)
+ int __init arm_add_memory(phys_addr_t start, unsigned long size)
{
struct membank *bank = &meminfo.bank[meminfo.nr_banks];
static int __init parse_tag_cmdline(const struct tag *tag)
{
-#ifndef CONFIG_CMDLINE_FORCE
- strlcpy(default_command_line, tag->u.cmdline.cmdline, COMMAND_LINE_SIZE);
-#else
+#if defined(CONFIG_CMDLINE_EXTEND)
+ strlcat(default_command_line, " ", COMMAND_LINE_SIZE);
+ strlcat(default_command_line, tag->u.cmdline.cmdline,
+ COMMAND_LINE_SIZE);
+#elif defined(CONFIG_CMDLINE_FORCE)
pr_warning("Ignoring tag cmdline (using the default kernel command line)\n");
-#endif /* CONFIG_CMDLINE_FORCE */
+#else
+ strlcpy(default_command_line, tag->u.cmdline.cmdline,
+ COMMAND_LINE_SIZE);
+#endif
return 0;
}
tag->hdr.tag = ATAG_NONE;
}
- void __init setup_arch(char **cmdline_p)
+ static struct machine_desc * __init setup_machine_tags(unsigned int nr)
{
struct tag *tags = (struct tag *)&init_tags;
- struct machine_desc *mdesc;
+ struct machine_desc *mdesc = NULL, *p;
char *from = default_command_line;
init_tags.mem.start = PHYS_OFFSET;
- unwind_init();
-
- setup_processor();
- mdesc = setup_machine(machine_arch_type);
- machine_desc = mdesc;
- machine_name = mdesc->name;
+ /*
+ * locate machine in the list of supported machines.
+ */
+ for_each_machine_desc(p)
+ if (nr == p->nr) {
+ printk("Machine: %s\n", p->name);
+ mdesc = p;
+ break;
+ }
- if (mdesc->soft_reboot)
- reboot_setup("s");
+ if (!mdesc) {
+ early_print("\nError: unrecognized/unsupported machine ID"
+ " (r1 = 0x%08x).\n\n", nr);
+ dump_machine_table(); /* does not return */
+ }
if (__atags_pointer)
tags = phys_to_virt(__atags_pointer);
if (tags->hdr.tag != ATAG_CORE)
convert_to_tag_list(tags);
#endif
- if (tags->hdr.tag != ATAG_CORE)
+
+ if (tags->hdr.tag != ATAG_CORE) {
+ #if defined(CONFIG_OF)
+ /*
+ * If CONFIG_OF is set, then assume this is a reasonably
+ * modern system that should pass boot parameters
+ */
+ early_print("Warning: Neither atags nor dtb found\n");
+ #endif
tags = (struct tag *)&init_tags;
+ }
if (mdesc->fixup)
mdesc->fixup(mdesc, tags, &from, &meminfo);
parse_tags(tags);
}
+ /* parse_early_param needs a boot_command_line */
+ strlcpy(boot_command_line, from, COMMAND_LINE_SIZE);
+
+ return mdesc;
+ }
+
+
+ void __init setup_arch(char **cmdline_p)
+ {
+ struct machine_desc *mdesc;
+
+ unwind_init();
+
+ setup_processor();
+ mdesc = setup_machine_fdt(__atags_pointer);
+ if (!mdesc)
+ mdesc = setup_machine_tags(machine_arch_type);
+ machine_desc = mdesc;
+ machine_name = mdesc->name;
+
+ if (mdesc->soft_reboot)
+ reboot_setup("s");
+
init_mm.start_code = (unsigned long) _text;
init_mm.end_code = (unsigned long) _etext;
init_mm.end_data = (unsigned long) _edata;
init_mm.brk = (unsigned long) _end;
- /* parse_early_param needs a boot_command_line */
- strlcpy(boot_command_line, from, COMMAND_LINE_SIZE);
-
/* populate cmd_line too for later use, preserving boot_command_line */
strlcpy(cmd_line, boot_command_line, COMMAND_LINE_SIZE);
*cmdline_p = cmd_line;
paging_init(mdesc);
request_standard_resources(mdesc);
+ unflatten_device_tree();
+
#ifdef CONFIG_SMP
if (is_smp())
smp_init_cpus();
#include <linux/mman.h>
#include <linux/nodemask.h>
#include <linux/initrd.h>
+ #include <linux/of_fdt.h>
#include <linux/highmem.h>
#include <linux/gfp.h>
#include <linux/memblock.h>
#include <linux/sort.h>
#include <asm/mach-types.h>
+ #include <asm/prom.h>
#include <asm/sections.h>
#include <asm/setup.h>
#include <asm/sizes.h>
__tagtable(ATAG_INITRD2, parse_tag_initrd2);
+ #ifdef CONFIG_OF_FLATTREE
+ void __init early_init_dt_setup_initrd_arch(unsigned long start, unsigned long end)
+ {
+ phys_initrd_start = start;
+ phys_initrd_size = end - start;
+ }
+ #endif /* CONFIG_OF_FLATTREE */
+
/*
* This keeps memory configuration data used by a couple memory
* initialization functions, as well as show_mem() for the skipping
}
}
+#ifdef CONFIG_ZONE_DMA
+static void __init arm_adjust_dma_zone(unsigned long *size, unsigned long *hole,
+ unsigned long dma_size)
+{
+ if (size[0] <= dma_size)
+ return;
+
+ size[ZONE_NORMAL] = size[0] - dma_size;
+ size[ZONE_DMA] = dma_size;
+ hole[ZONE_NORMAL] = hole[0];
+ hole[ZONE_DMA] = 0;
+}
+#endif
+
static void __init arm_bootmem_free(unsigned long min, unsigned long max_low,
unsigned long max_high)
{
#endif
}
+#ifdef ARM_DMA_ZONE_SIZE
+#ifndef CONFIG_ZONE_DMA
+#error ARM_DMA_ZONE_SIZE set but no DMA zone to limit allocations
+#endif
+
/*
* Adjust the sizes according to any special requirements for
* this machine type.
*/
- arch_adjust_zones(zone_size, zhole_size);
+ arm_adjust_dma_zone(zone_size, zhole_size,
+ ARM_DMA_ZONE_SIZE >> PAGE_SHIFT);
+#endif
free_area_init_node(0, zone_size, min, zhole_size);
}
#endif
arm_mm_memblock_reserve();
+ arm_dt_memblock_reserve();
/* reserve any platform specific memblock areas */
if (mdesc->reserve)
* Convert start_pfn/end_pfn to a struct page pointer.
*/
start_pg = pfn_to_page(start_pfn - 1) + 1;
- end_pg = pfn_to_page(end_pfn);
+ end_pg = pfn_to_page(end_pfn - 1) + 1;
/*
* Convert to physical addresses, and
bank_start = bank_pfn_start(bank);
+#ifdef CONFIG_SPARSEMEM
+ /*
+ * Take care not to free memmap entries that don't exist
+ * due to SPARSEMEM sections which aren't present.
+ */
+ bank_start = min(bank_start,
+ ALIGN(prev_bank_end, PAGES_PER_SECTION));
+#endif
/*
* If we had a previous bank, and there is a space
* between the current bank and the previous, free it.
*/
prev_bank_end = ALIGN(bank_pfn_end(bank), MAX_ORDER_NR_PAGES);
}
+
+#ifdef CONFIG_SPARSEMEM
+ if (!IS_ALIGNED(prev_bank_end, PAGES_PER_SECTION))
+ free_memmap(prev_bank_end,
+ ALIGN(prev_bank_end, PAGES_PER_SECTION));
+#endif
}
static void __init free_highpages(void)
unsigned long tce_alloc_start, tce_alloc_end;
u64 ppc64_rma_size;
#endif
+static phys_addr_t first_memblock_size;
static int __init early_parse_mem(char *p)
{
*/
static struct ibm_pa_feature {
unsigned long cpu_features; /* CPU_FTR_xxx bit */
+ unsigned long mmu_features; /* MMU_FTR_xxx bit */
unsigned int cpu_user_ftrs; /* PPC_FEATURE_xxx bit */
unsigned char pabyte; /* byte number in ibm,pa-features */
unsigned char pabit; /* bit number (big-endian) */
unsigned char invert; /* if 1, pa bit set => clear feature */
} ibm_pa_features[] __initdata = {
- {0, PPC_FEATURE_HAS_MMU, 0, 0, 0},
- {0, PPC_FEATURE_HAS_FPU, 0, 1, 0},
- {CPU_FTR_SLB, 0, 0, 2, 0},
- {CPU_FTR_CTRL, 0, 0, 3, 0},
- {CPU_FTR_NOEXECUTE, 0, 0, 6, 0},
- {CPU_FTR_NODSISRALIGN, 0, 1, 1, 1},
- {CPU_FTR_CI_LARGE_PAGE, 0, 1, 2, 0},
+ {0, 0, PPC_FEATURE_HAS_MMU, 0, 0, 0},
+ {0, 0, PPC_FEATURE_HAS_FPU, 0, 1, 0},
+ {0, MMU_FTR_SLB, 0, 0, 2, 0},
+ {CPU_FTR_CTRL, 0, 0, 0, 3, 0},
+ {CPU_FTR_NOEXECUTE, 0, 0, 0, 6, 0},
+ {CPU_FTR_NODSISRALIGN, 0, 0, 1, 1, 1},
+ {0, MMU_FTR_CI_LARGE_PAGE, 0, 1, 2, 0},
{CPU_FTR_REAL_LE, PPC_FEATURE_TRUE_LE, 5, 0, 0},
};
if (bit ^ fp->invert) {
cur_cpu_spec->cpu_features |= fp->cpu_features;
cur_cpu_spec->cpu_user_features |= fp->cpu_user_ftrs;
+ cur_cpu_spec->mmu_features |= fp->mmu_features;
} else {
cur_cpu_spec->cpu_features &= ~fp->cpu_features;
cur_cpu_spec->cpu_user_features &= ~fp->cpu_user_ftrs;
+ cur_cpu_spec->mmu_features &= ~fp->mmu_features;
}
}
}
const char *uname, int depth,
void *data)
{
- static int logical_cpuid = 0;
char *type = of_get_flat_dt_prop(node, "device_type", NULL);
const u32 *prop;
const u32 *intserv;
int i, nthreads;
unsigned long len;
- int found = 0;
+ int found = -1;
+ int found_thread = 0;
/* We are scanning "cpu" nodes only */
if (type == NULL || strcmp(type, "cpu") != 0)
* version 2 of the kexec param format adds the phys cpuid of
* booted proc.
*/
- if (initial_boot_params && initial_boot_params->version >= 2) {
- if (intserv[i] ==
- initial_boot_params->boot_cpuid_phys) {
- found = 1;
- break;
+ if (initial_boot_params->version >= 2) {
+ if (intserv[i] == initial_boot_params->boot_cpuid_phys) {
+ found = boot_cpu_count;
+ found_thread = i;
}
} else {
/*
* off secondary threads.
*/
if (of_get_flat_dt_prop(node,
- "linux,boot-cpu", NULL) != NULL) {
- found = 1;
- break;
- }
+ "linux,boot-cpu", NULL) != NULL)
+ found = boot_cpu_count;
}
-
#ifdef CONFIG_SMP
/* logical cpu id is always 0 on UP kernels */
- logical_cpuid++;
+ boot_cpu_count++;
#endif
}
- if (found) {
- DBG("boot cpu: logical %d physical %d\n", logical_cpuid,
- intserv[i]);
- boot_cpuid = logical_cpuid;
- set_hard_smp_processor_id(boot_cpuid, intserv[i]);
+ if (found >= 0) {
+ DBG("boot cpu: logical %d physical %d\n", found,
+ intserv[found_thread]);
+ boot_cpuid = found;
+ set_hard_smp_processor_id(found, intserv[found_thread]);
/*
* PAPR defines "logical" PVR values for cpus that
size = 0x80000000ul - base;
}
#endif
-
- /* First MEMBLOCK added, do some special initializations */
- if (memstart_addr == ~(phys_addr_t)0)
- setup_initial_memory_limit(base, size);
- memstart_addr = min((u64)memstart_addr, base);
+ /* Keep track of the beginning of memory -and- the size of
+ * the very first block in the device-tree as it represents
+ * the RMA on ppc64 server
+ */
+ if (base < memstart_addr) {
+ memstart_addr = base;
+ first_memblock_size = size;
+ }
/* Add the chunk to the MEMBLOCK list */
memblock_add(base, size);
* device-tree, including the platform type, initrd location and
* size, TCE reserve, and more ...
*/
- of_scan_flat_dt(early_init_dt_scan_chosen_ppc, NULL);
+ of_scan_flat_dt(early_init_dt_scan_chosen_ppc, cmd_line);
/* Scan memory nodes and rebuild MEMBLOCKs */
memblock_init();
of_scan_flat_dt(early_init_dt_scan_root, NULL);
of_scan_flat_dt(early_init_dt_scan_memory_ppc, NULL);
+ setup_initial_memory_limit(memstart_addr, first_memblock_size);
/* Save command line for /proc/cmdline and then parse parameters */
strlcpy(boot_command_line, cmd_line, COMMAND_LINE_SIZE);
projects / linux.git / commitdiff