Merge branch 'x86-platform-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86-platform-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: x86: Introduce pci_map_biosrom() x86, olpc: Use device tree for platform identificationhifive-unleashed-5.1
commit
08b5d06ec6
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@ -2069,7 +2069,7 @@ config OLPC
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depends on !X86_PAE
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depends on !X86_PAE
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select GPIOLIB
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select GPIOLIB
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select OF
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select OF
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select OF_PROMTREE if PROC_DEVICETREE
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select OF_PROMTREE
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---help---
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---help---
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Add support for detecting the unique features of the OLPC
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Add support for detecting the unique features of the OLPC
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XO hardware.
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XO hardware.
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@ -26,15 +26,12 @@ extern void setup_olpc_ofw_pgd(void);
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/* check if OFW was detected during boot */
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/* check if OFW was detected during boot */
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extern bool olpc_ofw_present(void);
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extern bool olpc_ofw_present(void);
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extern void olpc_dt_build_devicetree(void);
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#else /* !CONFIG_OLPC */
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#else /* !CONFIG_OLPC */
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static inline void olpc_ofw_detect(void) { }
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static inline void olpc_ofw_detect(void) { }
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static inline void setup_olpc_ofw_pgd(void) { }
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static inline void setup_olpc_ofw_pgd(void) { }
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static inline void olpc_dt_build_devicetree(void) { }
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#endif /* !CONFIG_OLPC */
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#endif /* !CONFIG_OLPC */
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#ifdef CONFIG_OF_PROMTREE
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extern void olpc_dt_build_devicetree(void);
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#else
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static inline void olpc_dt_build_devicetree(void) { }
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#endif
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#endif /* _ASM_X86_OLPC_OFW_H */
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#endif /* _ASM_X86_OLPC_OFW_H */
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@ -0,0 +1,8 @@
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#ifndef _PROBE_ROMS_H_
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#define _PROBE_ROMS_H_
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struct pci_dev;
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extern void __iomem *pci_map_biosrom(struct pci_dev *pdev);
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extern void pci_unmap_biosrom(void __iomem *rom);
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extern size_t pci_biosrom_size(struct pci_dev *pdev);
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#endif
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@ -104,10 +104,10 @@ void *extend_brk(size_t size, size_t align);
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type *name; \
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type *name; \
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RESERVE_BRK(name, sizeof(type) * entries)
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RESERVE_BRK(name, sizeof(type) * entries)
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extern void probe_roms(void);
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#ifdef __i386__
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#ifdef __i386__
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void __init i386_start_kernel(void);
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void __init i386_start_kernel(void);
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extern void probe_roms(void);
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#else
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#else
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void __init x86_64_start_kernel(char *real_mode);
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void __init x86_64_start_kernel(char *real_mode);
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@ -36,7 +36,7 @@ obj-y += traps.o irq.o irq_$(BITS).o dumpstack_$(BITS).o
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obj-y += time.o ioport.o ldt.o dumpstack.o
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obj-y += time.o ioport.o ldt.o dumpstack.o
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obj-y += setup.o x86_init.o i8259.o irqinit.o jump_label.o
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obj-y += setup.o x86_init.o i8259.o irqinit.o jump_label.o
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obj-$(CONFIG_IRQ_WORK) += irq_work.o
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obj-$(CONFIG_IRQ_WORK) += irq_work.o
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obj-$(CONFIG_X86_32) += probe_roms_32.o
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obj-y += probe_roms.o
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obj-$(CONFIG_X86_32) += sys_i386_32.o i386_ksyms_32.o
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obj-$(CONFIG_X86_32) += sys_i386_32.o i386_ksyms_32.o
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obj-$(CONFIG_X86_64) += sys_x86_64.o x8664_ksyms_64.o
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obj-$(CONFIG_X86_64) += sys_x86_64.o x8664_ksyms_64.o
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obj-$(CONFIG_X86_64) += syscall_64.o vsyscall_64.o
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obj-$(CONFIG_X86_64) += syscall_64.o vsyscall_64.o
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@ -23,7 +23,6 @@
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static void __init i386_default_early_setup(void)
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static void __init i386_default_early_setup(void)
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{
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{
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/* Initialize 32bit specific setup functions */
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/* Initialize 32bit specific setup functions */
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x86_init.resources.probe_roms = probe_roms;
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x86_init.resources.reserve_resources = i386_reserve_resources;
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x86_init.resources.reserve_resources = i386_reserve_resources;
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x86_init.mpparse.setup_ioapic_ids = setup_ioapic_ids_from_mpc;
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x86_init.mpparse.setup_ioapic_ids = setup_ioapic_ids_from_mpc;
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@ -73,6 +73,107 @@ static struct resource video_rom_resource = {
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.flags = IORESOURCE_BUSY | IORESOURCE_READONLY | IORESOURCE_MEM
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.flags = IORESOURCE_BUSY | IORESOURCE_READONLY | IORESOURCE_MEM
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};
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};
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/* does this oprom support the given pci device, or any of the devices
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* that the driver supports?
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*/
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static bool match_id(struct pci_dev *pdev, unsigned short vendor, unsigned short device)
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{
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struct pci_driver *drv = pdev->driver;
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const struct pci_device_id *id;
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if (pdev->vendor == vendor && pdev->device == device)
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return true;
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for (id = drv ? drv->id_table : NULL; id && id->vendor; id++)
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if (id->vendor == vendor && id->device == device)
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break;
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return id && id->vendor;
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}
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static bool probe_list(struct pci_dev *pdev, unsigned short vendor,
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const unsigned char *rom_list)
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{
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unsigned short device;
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do {
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if (probe_kernel_address(rom_list, device) != 0)
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device = 0;
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if (device && match_id(pdev, vendor, device))
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break;
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rom_list += 2;
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} while (device);
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return !!device;
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}
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static struct resource *find_oprom(struct pci_dev *pdev)
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{
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struct resource *oprom = NULL;
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int i;
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for (i = 0; i < ARRAY_SIZE(adapter_rom_resources); i++) {
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struct resource *res = &adapter_rom_resources[i];
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unsigned short offset, vendor, device, list, rev;
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const unsigned char *rom;
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if (res->end == 0)
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break;
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rom = isa_bus_to_virt(res->start);
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if (probe_kernel_address(rom + 0x18, offset) != 0)
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continue;
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if (probe_kernel_address(rom + offset + 0x4, vendor) != 0)
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continue;
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if (probe_kernel_address(rom + offset + 0x6, device) != 0)
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continue;
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if (match_id(pdev, vendor, device)) {
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oprom = res;
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break;
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}
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if (probe_kernel_address(rom + offset + 0x8, list) == 0 &&
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probe_kernel_address(rom + offset + 0xc, rev) == 0 &&
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rev >= 3 && list &&
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probe_list(pdev, vendor, rom + offset + list)) {
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oprom = res;
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break;
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}
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}
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return oprom;
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}
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void *pci_map_biosrom(struct pci_dev *pdev)
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{
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struct resource *oprom = find_oprom(pdev);
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if (!oprom)
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return NULL;
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return ioremap(oprom->start, resource_size(oprom));
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}
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EXPORT_SYMBOL(pci_map_biosrom);
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void pci_unmap_biosrom(void __iomem *image)
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{
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iounmap(image);
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}
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EXPORT_SYMBOL(pci_unmap_biosrom);
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size_t pci_biosrom_size(struct pci_dev *pdev)
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{
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struct resource *oprom = find_oprom(pdev);
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return oprom ? resource_size(oprom) : 0;
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}
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EXPORT_SYMBOL(pci_biosrom_size);
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#define ROMSIGNATURE 0xaa55
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#define ROMSIGNATURE 0xaa55
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static int __init romsignature(const unsigned char *rom)
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static int __init romsignature(const unsigned char *rom)
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@ -35,7 +35,7 @@ void iommu_shutdown_noop(void) { }
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struct x86_init_ops x86_init __initdata = {
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struct x86_init_ops x86_init __initdata = {
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.resources = {
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.resources = {
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.probe_roms = x86_init_noop,
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.probe_roms = probe_roms,
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.reserve_resources = reserve_standard_io_resources,
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.reserve_resources = reserve_standard_io_resources,
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.memory_setup = default_machine_specific_memory_setup,
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.memory_setup = default_machine_specific_memory_setup,
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},
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},
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@ -1,4 +1,2 @@
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obj-$(CONFIG_OLPC) += olpc.o
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obj-$(CONFIG_OLPC) += olpc.o olpc_ofw.o olpc_dt.o
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obj-$(CONFIG_OLPC_XO1) += olpc-xo1.o
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obj-$(CONFIG_OLPC_XO1) += olpc-xo1.o
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obj-$(CONFIG_OLPC) += olpc_ofw.o
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obj-$(CONFIG_OF_PROMTREE) += olpc_dt.o
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@ -18,6 +18,7 @@
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#include <linux/io.h>
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#include <linux/io.h>
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#include <linux/string.h>
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#include <linux/string.h>
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#include <linux/platform_device.h>
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#include <linux/platform_device.h>
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#include <linux/of.h>
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#include <asm/geode.h>
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#include <asm/geode.h>
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#include <asm/setup.h>
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#include <asm/setup.h>
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@ -187,41 +188,43 @@ err:
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}
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}
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EXPORT_SYMBOL_GPL(olpc_ec_cmd);
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EXPORT_SYMBOL_GPL(olpc_ec_cmd);
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static bool __init check_ofw_architecture(void)
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static bool __init check_ofw_architecture(struct device_node *root)
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{
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{
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size_t propsize;
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const char *olpc_arch;
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char olpc_arch[5];
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int propsize;
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const void *args[] = { NULL, "architecture", olpc_arch, (void *)5 };
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void *res[] = { &propsize };
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if (olpc_ofw("getprop", args, res)) {
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olpc_arch = of_get_property(root, "architecture", &propsize);
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printk(KERN_ERR "ofw: getprop call failed!\n");
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return false;
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}
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return propsize == 5 && strncmp("OLPC", olpc_arch, 5) == 0;
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return propsize == 5 && strncmp("OLPC", olpc_arch, 5) == 0;
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}
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}
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static u32 __init get_board_revision(void)
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static u32 __init get_board_revision(struct device_node *root)
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{
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{
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size_t propsize;
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int propsize;
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__be32 rev;
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const __be32 *rev;
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const void *args[] = { NULL, "board-revision-int", &rev, (void *)4 };
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void *res[] = { &propsize };
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if (olpc_ofw("getprop", args, res) || propsize != 4) {
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rev = of_get_property(root, "board-revision-int", &propsize);
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printk(KERN_ERR "ofw: getprop call failed!\n");
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if (propsize != 4)
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return cpu_to_be32(0);
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return 0;
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}
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return be32_to_cpu(rev);
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return be32_to_cpu(*rev);
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}
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}
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static bool __init platform_detect(void)
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static bool __init platform_detect(void)
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{
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{
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if (!check_ofw_architecture())
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struct device_node *root = of_find_node_by_path("/");
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bool success;
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if (!root)
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return false;
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return false;
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olpc_platform_info.flags |= OLPC_F_PRESENT;
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olpc_platform_info.boardrev = get_board_revision();
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success = check_ofw_architecture(root);
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return true;
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if (success) {
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olpc_platform_info.boardrev = get_board_revision(root);
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olpc_platform_info.flags |= OLPC_F_PRESENT;
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}
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of_node_put(root);
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return success;
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}
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}
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static int __init add_xo1_platform_devices(void)
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static int __init add_xo1_platform_devices(void)
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@ -19,7 +19,9 @@
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#include <linux/kernel.h>
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#include <linux/kernel.h>
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#include <linux/bootmem.h>
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#include <linux/bootmem.h>
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#include <linux/of.h>
|
#include <linux/of.h>
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#include <linux/of_platform.h>
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#include <linux/of_pdt.h>
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#include <linux/of_pdt.h>
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#include <asm/olpc.h>
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#include <asm/olpc_ofw.h>
|
#include <asm/olpc_ofw.h>
|
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|
|
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static phandle __init olpc_dt_getsibling(phandle node)
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static phandle __init olpc_dt_getsibling(phandle node)
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@ -180,3 +182,20 @@ void __init olpc_dt_build_devicetree(void)
|
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pr_info("PROM DT: Built device tree with %u bytes of memory.\n",
|
pr_info("PROM DT: Built device tree with %u bytes of memory.\n",
|
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prom_early_allocated);
|
prom_early_allocated);
|
||||||
}
|
}
|
||||||
|
|
||||||
|
/* A list of DT node/bus matches that we want to expose as platform devices */
|
||||||
|
static struct of_device_id __initdata of_ids[] = {
|
||||||
|
{ .compatible = "olpc,xo1-battery" },
|
||||||
|
{ .compatible = "olpc,xo1-dcon" },
|
||||||
|
{ .compatible = "olpc,xo1-rtc" },
|
||||||
|
{},
|
||||||
|
};
|
||||||
|
|
||||||
|
static int __init olpc_create_platform_devices(void)
|
||||||
|
{
|
||||||
|
if (machine_is_olpc())
|
||||||
|
return of_platform_bus_probe(NULL, of_ids, NULL);
|
||||||
|
else
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
device_initcall(olpc_create_platform_devices);
|
||||||
|
|
Loading…
Reference in New Issue