aboutsummaryrefslogtreecommitdiff
path: root/arch/x86/boot/compressed/eboot.c
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2012-12-13 12:14:47 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2012-12-13 12:14:47 -0800
commit193c0d682525987db59ac3a24531a77e4947aa95 (patch)
tree7b58346171c4d07e2c2ee6c3c469c325495149a4 /arch/x86/boot/compressed/eboot.c
parent8b0cab14951fbf8126795ab301835a8f8126a988 (diff)
parent1cb73f8c479e66541fefd3f7fa547b1fa56cdc54 (diff)
Merge tag 'for-3.8' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci
Pull PCI update from Bjorn Helgaas: "Host bridge hotplug: - Untangle _PRT from struct pci_bus (Bjorn Helgaas) - Request _OSC control before scanning root bus (Taku Izumi) - Assign resources when adding host bridge (Yinghai Lu) - Remove root bus when removing host bridge (Yinghai Lu) - Remove _PRT during hot remove (Yinghai Lu) SRIOV - Add sysfs knobs to control numVFs (Don Dutile) Power management - Notify devices when power resource turned on (Huang Ying) Bug fixes - Work around broken _SEG on HP xw9300 (Bjorn Helgaas) - Keep runtime PM enabled for unbound PCI devices (Huang Ying) - Fix Optimus dual-GPU runtime D3 suspend issue (Dave Airlie) - Fix xen frontend shutdown issue (David Vrabel) - Work around PLX PCI 9050 BAR alignment erratum (Ian Abbott) Miscellaneous - Add GPL license for drivers/pci/ioapic (Andrew Cooks) - Add standard PCI-X, PCIe ASPM register #defines (Bjorn Helgaas) - NumaChip remote PCI support (Daniel Blueman) - Fix PCIe Link Capabilities Supported Link Speed definition (Jingoo Han) - Convert dev_printk() to dev_info(), etc (Joe Perches) - Add support for non PCI BAR ROM data (Matthew Garrett) - Add x86 support for host bridge translation offset (Mike Yoknis) - Report success only when every driver supports AER (Vijay Pandarathil)" Fix up trivial conflicts. * tag 'for-3.8' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (48 commits) PCI: Use phys_addr_t for physical ROM address x86/PCI: Add NumaChip remote PCI support ath9k: Use standard #defines for PCIe Capability ASPM fields iwlwifi: Use standard #defines for PCIe Capability ASPM fields iwlwifi: collapse wrapper for pcie_capability_read_word() iwlegacy: Use standard #defines for PCIe Capability ASPM fields iwlegacy: collapse wrapper for pcie_capability_read_word() cxgb3: Use standard #defines for PCIe Capability ASPM fields PCI: Add standard PCIe Capability Link ASPM field names PCI/portdrv: Use PCI Express Capability accessors PCI: Use standard PCIe Capability Link register field names x86: Use PCI setup data PCI: Add support for non-BAR ROMs PCI: Add pcibios_add_device EFI: Stash ROMs if they're not in the PCI BAR PCI: Add and use standard PCI-X Capability register names PCI/PM: Keep runtime PM enabled for unbound PCI devices xen-pcifront: Handle backend CLOSED without CLOSING PCI: SRIOV control and status via sysfs (documentation) PCI/AER: Report success only when every device has AER-aware driver ...
Diffstat (limited to 'arch/x86/boot/compressed/eboot.c')
-rw-r--r--arch/x86/boot/compressed/eboot.c118
1 files changed, 118 insertions, 0 deletions
diff --git a/arch/x86/boot/compressed/eboot.c b/arch/x86/boot/compressed/eboot.c
index e87b0cac14b..b1942e22276 100644
--- a/arch/x86/boot/compressed/eboot.c
+++ b/arch/x86/boot/compressed/eboot.c
@@ -8,6 +8,7 @@
* ----------------------------------------------------------------------- */
#include <linux/efi.h>
+#include <linux/pci.h>
#include <asm/efi.h>
#include <asm/setup.h>
#include <asm/desc.h>
@@ -245,6 +246,121 @@ static void find_bits(unsigned long mask, u8 *pos, u8 *size)
*size = len;
}
+static efi_status_t setup_efi_pci(struct boot_params *params)
+{
+ efi_pci_io_protocol *pci;
+ efi_status_t status;
+ void **pci_handle;
+ efi_guid_t pci_proto = EFI_PCI_IO_PROTOCOL_GUID;
+ unsigned long nr_pci, size = 0;
+ int i;
+ struct setup_data *data;
+
+ data = (struct setup_data *)params->hdr.setup_data;
+
+ while (data && data->next)
+ data = (struct setup_data *)data->next;
+
+ status = efi_call_phys5(sys_table->boottime->locate_handle,
+ EFI_LOCATE_BY_PROTOCOL, &pci_proto,
+ NULL, &size, pci_handle);
+
+ if (status == EFI_BUFFER_TOO_SMALL) {
+ status = efi_call_phys3(sys_table->boottime->allocate_pool,
+ EFI_LOADER_DATA, size, &pci_handle);
+
+ if (status != EFI_SUCCESS)
+ return status;
+
+ status = efi_call_phys5(sys_table->boottime->locate_handle,
+ EFI_LOCATE_BY_PROTOCOL, &pci_proto,
+ NULL, &size, pci_handle);
+ }
+
+ if (status != EFI_SUCCESS)
+ goto free_handle;
+
+ nr_pci = size / sizeof(void *);
+ for (i = 0; i < nr_pci; i++) {
+ void *h = pci_handle[i];
+ uint64_t attributes;
+ struct pci_setup_rom *rom;
+
+ status = efi_call_phys3(sys_table->boottime->handle_protocol,
+ h, &pci_proto, &pci);
+
+ if (status != EFI_SUCCESS)
+ continue;
+
+ if (!pci)
+ continue;
+
+ status = efi_call_phys4(pci->attributes, pci,
+ EfiPciIoAttributeOperationGet, 0,
+ &attributes);
+
+ if (status != EFI_SUCCESS)
+ continue;
+
+ if (!attributes & EFI_PCI_IO_ATTRIBUTE_EMBEDDED_ROM)
+ continue;
+
+ if (!pci->romimage || !pci->romsize)
+ continue;
+
+ size = pci->romsize + sizeof(*rom);
+
+ status = efi_call_phys3(sys_table->boottime->allocate_pool,
+ EFI_LOADER_DATA, size, &rom);
+
+ if (status != EFI_SUCCESS)
+ continue;
+
+ rom->data.type = SETUP_PCI;
+ rom->data.len = size - sizeof(struct setup_data);
+ rom->data.next = 0;
+ rom->pcilen = pci->romsize;
+
+ status = efi_call_phys5(pci->pci.read, pci,
+ EfiPciIoWidthUint16, PCI_VENDOR_ID,
+ 1, &(rom->vendor));
+
+ if (status != EFI_SUCCESS)
+ goto free_struct;
+
+ status = efi_call_phys5(pci->pci.read, pci,
+ EfiPciIoWidthUint16, PCI_DEVICE_ID,
+ 1, &(rom->devid));
+
+ if (status != EFI_SUCCESS)
+ goto free_struct;
+
+ status = efi_call_phys5(pci->get_location, pci,
+ &(rom->segment), &(rom->bus),
+ &(rom->device), &(rom->function));
+
+ if (status != EFI_SUCCESS)
+ goto free_struct;
+
+ memcpy(rom->romdata, pci->romimage, pci->romsize);
+
+ if (data)
+ data->next = (uint64_t)rom;
+ else
+ params->hdr.setup_data = (uint64_t)rom;
+
+ data = (struct setup_data *)rom;
+
+ continue;
+ free_struct:
+ efi_call_phys1(sys_table->boottime->free_pool, rom);
+ }
+
+free_handle:
+ efi_call_phys1(sys_table->boottime->free_pool, pci_handle);
+ return status;
+}
+
/*
* See if we have Graphics Output Protocol
*/
@@ -1028,6 +1144,8 @@ struct boot_params *efi_main(void *handle, efi_system_table_t *_table,
setup_graphics(boot_params);
+ setup_efi_pci(boot_params);
+
status = efi_call_phys3(sys_table->boottime->allocate_pool,
EFI_LOADER_DATA, sizeof(*gdt),
(void **)&gdt);