diff options
author | wdenk <wdenk> | 2004-02-22 23:46:08 (GMT) |
---|---|---|
committer | wdenk <wdenk> | 2004-02-22 23:46:08 (GMT) |
commit | 3c74e32a98187c792edcea3e0e39150de5a8dda6 (patch) | |
tree | feb1a080a1332a3bfc383282ba9a6e4cfe6f8f4a /cpu/mpc8260 | |
parent | cf56e1101957c09cb4aafcf28a89658c4649c511 (diff) | |
download | u-boot-3c74e32a98187c792edcea3e0e39150de5a8dda6.tar.xz |
* Patch by Travis Sawyer, 09 Feb 2004:
o 440GX:
- Fix PCI Indirect access for type 1 config cycles with ppc440.
- Add phymode for 440 enet
- fix pci pre init
o XPedite1K:
- Change board_pre_init to board_early_init_f
- Add user flash to bus controller setup
- Fix pci pre init
- Fix is_pci_host to check GPIO for monarch bit
- Force xpedite1k to pci conventional mode (via #define option)
* Patch by Brad Kemp, 4 Feb 2004:
- handle the machine check that is generated during the PCI scans
on 82xx processors.
- define the registers used in the IMMR by the PCI subsystem.
* Patch by Pierre Aubert, 03 Feb 2004:
cpu/mpc5xxx/start.S: copy MBAR into SPR311
* Patch by Jeff Angielski, 03 Feb 2004:
Fix copy & paste error in cpu/mpc8260/pci.c
* Patch by Reinhard Meyer, 24 Jan 2004:
Fix typo in cpu/mpc5xxx/pci_mpc5200.c
Diffstat (limited to 'cpu/mpc8260')
-rw-r--r-- | cpu/mpc8260/pci.c | 371 | ||||
-rw-r--r-- | cpu/mpc8260/traps.c | 42 |
2 files changed, 224 insertions, 189 deletions
diff --git a/cpu/mpc8260/pci.c b/cpu/mpc8260/pci.c index b3a89f5..dc077ed 100644 --- a/cpu/mpc8260/pci.c +++ b/cpu/mpc8260/pci.c @@ -28,28 +28,28 @@ #include <pci.h> #include <mpc8260.h> #include <asm/m8260_pci.h> - +#include <asm/io.h> /* - * Local->PCI map (from CPU) controlled by + * Local->PCI map (from CPU) controlled by * MPC826x master window * - * 0x80000000 - 0xBFFFFFFF CPU2PCI space PCIBR0 - * 0xF4000000 - 0xF7FFFFFF CPU2PCI space PCIBR1 + * 0x80000000 - 0xBFFFFFFF CPU2PCI space PCIBR0 + * 0xF4000000 - 0xF7FFFFFF CPU2PCI space PCIBR1 * - * 0x80000000 - 0x9FFFFFFF 0x80000000 - 0x9FFFFFFF (Outbound ATU #1) - * PCI Mem with prefetch + * 0x80000000 - 0x9FFFFFFF 0x80000000 - 0x9FFFFFFF (Outbound ATU #1) + * PCI Mem with prefetch * - * 0xA0000000 - 0xBFFFFFFF 0xA0000000 - 0xBFFFFFFF (Outbound ATU #2) - * PCI Mem w/o prefetch + * 0xA0000000 - 0xBFFFFFFF 0xA0000000 - 0xBFFFFFFF (Outbound ATU #2) + * PCI Mem w/o prefetch * - * 0xF4000000 - 0xF7FFFFFF 0x00000000 - 0x03FFFFFF (Outbound ATU #3) - * 32-bit PCI IO + * 0xF4000000 - 0xF7FFFFFF 0x00000000 - 0x03FFFFFF (Outbound ATU #3) + * 32-bit PCI IO * * PCI->Local map (from PCI) - * MPC826x slave window controlled by + * MPC826x slave window controlled by * - * 0x00000000 - 0x1FFFFFFF 0x00000000 - 0x1FFFFFFF (Inbound ATU #1) - * MPC826x local memory + * 0x00000000 - 0x1FFFFFFF 0x00000000 - 0x1FFFFFFF (Inbound ATU #1) + * MPC826x local memory */ /* @@ -58,13 +58,13 @@ */ #ifndef CFG_PCI_SLV_MEM_LOCAL -#define PCI_SLV_MEM_LOCAL CFG_SDRAM_BASE /* Local base */ +#define PCI_SLV_MEM_LOCAL CFG_SDRAM_BASE /* Local base */ #else #define PCI_SLV_MEM_LOCAL CFG_PCI_SLV_MEM_LOCAL #endif #ifndef CFG_PCI_SLV_MEM_BUS -#define PCI_SLV_MEM_BUS 0x00000000 /* PCI base */ +#define PCI_SLV_MEM_BUS 0x00000000 /* PCI base */ #else #define PCI_SLV_MEM_BUS CFG_PCI_SLV_MEM_BUS #endif @@ -85,28 +85,28 @@ /* PCIBR0 */ #ifndef CFG_PCI_MSTR0_LOCAL -#define PCI_MSTR0_LOCAL 0x80000000 /* Local base */ +#define PCI_MSTR0_LOCAL 0x80000000 /* Local base */ #else #define PCI_MSTR0_LOCAL CFG_PCI_MSTR0_LOCAL #endif #ifndef CFG_PCIMSK0_MASK -#define PCIMSK0_MASK PCIMSK_1GB /* Size of window */ +#define PCIMSK0_MASK PCIMSK_1GB /* Size of window */ #else #define PCIMSK0_MASK CFG_PCIMSK0_MASK #endif /* PCIBR1 */ #ifndef CFG_PCI_MSTR1_LOCAL -#define PCI_MSTR1_LOCAL 0xF4000000 /* Local base */ +#define PCI_MSTR1_LOCAL 0xF4000000 /* Local base */ #else #define PCI_MSTR1_LOCAL CFG_PCI_MSTR1_LOCAL #endif #ifndef CFG_PCIMSK1_MASK -#define PCIMSK1_MASK PCIMSK_64MB /* Size of window */ +#define PCIMSK1_MASK PCIMSK_64MB /* Size of window */ #else -#define PCIMSK1_MASK CFG_PCIMSK1_MASK +#define PCIMSK1_MASK CFG_PCIMSK1_MASK #endif /* @@ -116,13 +116,13 @@ */ #ifndef CFG_PCI_MSTR_MEM_LOCAL -#define PCI_MSTR_MEM_LOCAL 0x80000000 /* Local base */ +#define PCI_MSTR_MEM_LOCAL 0x80000000 /* Local base */ #else #define PCI_MSTR_MEM_LOCAL CFG_PCI_MSTR_MEM_LOCAL #endif #ifndef CFG_PCI_MSTR_MEM_BUS -#define PCI_MSTR_MEM_BUS 0x80000000 /* PCI base */ +#define PCI_MSTR_MEM_BUS 0x80000000 /* PCI base */ #else #define PCI_MSTR_MEM_BUS CFG_PCI_MSTR_MEM_BUS #endif @@ -134,7 +134,7 @@ #endif #ifndef CFG_PCI_MSTR_MEM_SIZE -#define PCI_MSTR_MEM_SIZE 0x10000000 /* 256MB */ +#define PCI_MSTR_MEM_SIZE 0x10000000 /* 256MB */ #else #define PCI_MSTR_MEM_SIZE CFG_PCI_MSTR_MEM_SIZE #endif @@ -152,13 +152,13 @@ */ #ifndef CFG_PCI_MSTR_MEMIO_LOCAL -#define PCI_MSTR_MEMIO_LOCAL 0x90000000 /* Local base */ +#define PCI_MSTR_MEMIO_LOCAL 0x90000000 /* Local base */ #else #define PCI_MSTR_MEMIO_LOCAL CFG_PCI_MSTR_MEMIO_LOCAL #endif #ifndef CFG_PCI_MSTR_MEMIO_BUS -#define PCI_MSTR_MEMIO_BUS 0x90000000 /* PCI base */ +#define PCI_MSTR_MEMIO_BUS 0x90000000 /* PCI base */ #else #define PCI_MSTR_MEMIO_BUS CFG_PCI_MSTR_MEMIO_BUS #endif @@ -170,13 +170,13 @@ #endif #ifndef CFG_PCI_MSTR_MEMIO_SIZE -#define PCI_MSTR_MEMIO_SIZE 0x10000000 /* 256 MB */ +#define PCI_MSTR_MEMIO_SIZE 0x10000000 /* 256 MB */ #else #define PCI_MSTR_MEMIO_SIZE CFG_PCI_MSTR_MEMIO_SIZE #endif #ifndef CFG_POCMR1_MASK_ATTRIB -#define POCMR1_MASK_ATTRIB (POCMR_MASK_512MB | POCMR_ENABLE) +#define POCMR1_MASK_ATTRIB (POCMR_MASK_512MB | POCMR_ENABLE) #else #define POCMR1_MASK_ATTRIB CFG_POCMR1_MASK_ATTRIB #endif @@ -188,13 +188,13 @@ */ #ifndef CFG_PCI_MSTR_IO_LOCAL -#define PCI_MSTR_IO_LOCAL 0xA0000000 /* Local base */ +#define PCI_MSTR_IO_LOCAL 0xA0000000 /* Local base */ #else #define PCI_MSTR_IO_LOCAL CFG_PCI_MSTR_IO_LOCAL #endif #ifndef CFG_PCI_MSTR_IO_BUS -#define PCI_MSTR_IO_BUS 0xA0000000 /* PCI base */ +#define PCI_MSTR_IO_BUS 0xA0000000 /* PCI base */ #else #define PCI_MSTR_IO_BUS CFG_PCI_MSTR_IO_BUS #endif @@ -206,13 +206,13 @@ #endif #ifndef CFG_PCI_MSTR_IO_SIZE -#define PCI_MSTR_IO_SIZE 0x10000000 /* 256MB */ +#define PCI_MSTR_IO_SIZE 0x10000000 /* 256MB */ #else #define PCI_MSTR_IO_SIZE CFG_PCI_MSTR_IO_SIZE #endif #ifndef CFG_POCMR2_MASK_ATTRIB -#define POCMR2_MASK_ATTRIB (POCMR_MASK_256MB | POCMR_ENABLE | POCMR_PCI_IO) +#define POCMR2_MASK_ATTRIB (POCMR_MASK_256MB | POCMR_ENABLE | POCMR_PCI_IO) #else #define POCMR2_MASK_ATTRIB CFG_POCMR2_MASK_ATTRIB #endif @@ -223,193 +223,198 @@ #define PCI_CLASS_BRIDGE_CTLR 0x06 -static inline void pci_outl(u32 addr, u32 data) +static inline void pci_outl (u32 addr, u32 data) { - *(volatile u32 *) addr = cpu_to_le32(data); + *(volatile u32 *) addr = cpu_to_le32 (data); } -void pci_mpc8250_init(struct pci_controller *hose) +void pci_mpc8250_init (struct pci_controller *hose) { #ifdef CONFIG_MPC8266ADS - DECLARE_GLOBAL_DATA_PTR; + DECLARE_GLOBAL_DATA_PTR; #endif - u16 tempShort; - u32 immr_addr = CFG_IMMR; - volatile immap_t *immap = (immap_t *) CFG_IMMR; - pci_dev_t host_devno = PCI_BDF(0, 0, 0); + u16 tempShort; + + volatile immap_t *immap = (immap_t *) CFG_IMMR; + pci_dev_t host_devno = PCI_BDF (0, 0, 0); - pci_setup_indirect(hose, CFG_IMMR + PCI_CFG_ADDR_REG, - CFG_IMMR + PCI_CFG_DATA_REG); + pci_setup_indirect (hose, CFG_IMMR + PCI_CFG_ADDR_REG, + CFG_IMMR + PCI_CFG_DATA_REG); - /* - * Setting required to enable local bus for PCI (SIUMCR [LBPC]). - */ + /* + * Setting required to enable local bus for PCI (SIUMCR [LBPC]). + */ #ifdef CONFIG_MPC8266ADS - immap->im_siu_conf.sc_siumcr = (immap->im_siu_conf.sc_siumcr & ~SIUMCR_LBPC11) - | SIUMCR_LBPC01; + immap->im_siu_conf.sc_siumcr = + (immap->im_siu_conf.sc_siumcr & ~SIUMCR_LBPC11) + | SIUMCR_LBPC01; #else - /* - * Setting required to enable IRQ1-IRQ7 (SIUMCR [DPPC]), - * and local bus for PCI (SIUMCR [LBPC]). - */ - immap->im_siu_conf.sc_siumcr = (immap->im_siu_conf.sc_siumcr & - ~SIUMCR_LBPC11 & + /* + * Setting required to enable IRQ1-IRQ7 (SIUMCR [DPPC]), + * and local bus for PCI (SIUMCR [LBPC]). + */ + immap->im_siu_conf.sc_siumcr = (immap->im_siu_conf.sc_siumcr & + ~SIUMCR_LBPC11 & ~SIUMCR_CS10PC11 & - ~SIUMCR_LBPC11) | - SIUMCR_LBPC01 | - SIUMCR_CS10PC01 | - SIUMCR_LBPC01; + ~SIUMCR_LBPC11) | + SIUMCR_LBPC01 | + SIUMCR_CS10PC01 | + SIUMCR_APPC10; #endif - /* Make PCI lowest priority */ - /* Each 4 bits is a device bus request and the MS 4bits - is highest priority */ - /* Bus 4bit value - --- ---------- - CPM high 0b0000 - CPM middle 0b0001 - CPM low 0b0010 - PCI reguest 0b0011 - Reserved 0b0100 - Reserved 0b0101 - Internal Core 0b0110 - External Master 1 0b0111 - External Master 2 0b1000 - External Master 3 0b1001 - The rest are reserved */ - immap->im_siu_conf.sc_ppc_alrh = 0x61207893; - - /* Park bus on core while modifying PCI Bus accesses */ - immap->im_siu_conf.sc_ppc_acr = 0x6; - - /* - * Set up master windows that allow the CPU to access PCI space. These - * windows are set up using the two SIU PCIBR registers. - */ - *(volatile unsigned long*)(immr_addr + M8265_PCIMSK0) = PCIMSK0_MASK; - *(volatile unsigned long*)(immr_addr + M8265_PCIBR0) = - PCI_MSTR0_LOCAL | PCIBR_ENABLE; + /* Make PCI lowest priority */ + /* Each 4 bits is a device bus request and the MS 4bits + is highest priority */ + /* Bus 4bit value + --- ---------- + CPM high 0b0000 + CPM middle 0b0001 + CPM low 0b0010 + PCI reguest 0b0011 + Reserved 0b0100 + Reserved 0b0101 + Internal Core 0b0110 + External Master 1 0b0111 + External Master 2 0b1000 + External Master 3 0b1001 + The rest are reserved */ + immap->im_siu_conf.sc_ppc_alrh = 0x61207893; + + /* Park bus on core while modifying PCI Bus accesses */ + immap->im_siu_conf.sc_ppc_acr = 0x6; + + /* + * Set up master windows that allow the CPU to access PCI space. These + * windows are set up using the two SIU PCIBR registers. + */ + immap->im_memctl.memc_pcimsk0 = PCIMSK0_MASK; + immap->im_memctl.memc_pcibr0 = PCI_MSTR0_LOCAL | PCIBR_ENABLE; #ifdef CONFIG_MPC8266ADS - *(volatile unsigned long*)(immr_addr + M8265_PCIMSK1) = PCIMSK1_MASK; - *(volatile unsigned long*)(immr_addr + M8265_PCIBR1) = - PCI_MSTR1_LOCAL | PCIBR_ENABLE; + immap->im_memctl.memc_pcimsk0 = PCIMSK1_MASK; + immap->im_memctl.memc_pcibr0 = PCI_MSTR1_LOCAL | PCIBR_ENABLE; #endif - /* Release PCI RST (by default the PCI RST signal is held low) */ - pci_outl (immr_addr | PCI_GCR_REG, PCIGCR_PCI_BUS_EN); + /* Release PCI RST (by default the PCI RST signal is held low) */ + immap->im_pci.pci_gcr = cpu_to_le32 (PCIGCR_PCI_BUS_EN); - /* give it some time */ - { + /* give it some time */ + { #ifdef CONFIG_MPC8266ADS /* Give the PCI cards more time to initialize before query - This might be good for other boards also - */ - int i; - for (i = 0; i < 1000; ++i) + This might be good for other boards also + */ + int i; + + for (i = 0; i < 1000; ++i) #endif - udelay(1000); - } - - /* - * Set up master window that allows the CPU to access PCI Memory (prefetch) - * space. This window is set up using the first set of Outbound ATU registers. - */ - pci_outl (immr_addr | POTAR_REG0, PCI_MSTR_MEM_BUS >> 12); /* PCI base */ - pci_outl (immr_addr | POBAR_REG0, PCI_MSTR_MEM_LOCAL >> 12); /* Local base */ - pci_outl (immr_addr | POCMR_REG0, POCMR0_MASK_ATTRIB); /* Size & attribute */ - - /* - * Set up master window that allows the CPU to access PCI Memory (non-prefetch) - * space. This window is set up using the second set of Outbound ATU registers. - */ - pci_outl (immr_addr | POTAR_REG1, PCI_MSTR_MEMIO_BUS >> 12); /* PCI base */ - pci_outl (immr_addr | POBAR_REG1, PCI_MSTR_MEMIO_LOCAL >> 12); /* Local base */ - pci_outl (immr_addr | POCMR_REG1, POCMR1_MASK_ATTRIB); /* Size & attribute */ - - /* - * Set up master window that allows the CPU to access PCI IO space. This window - * is set up using the third set of Outbound ATU registers. - */ - pci_outl (immr_addr | POTAR_REG2, PCI_MSTR_IO_BUS >> 12); /* PCI base */ - pci_outl (immr_addr | POBAR_REG2, PCI_MSTR_IO_LOCAL >> 12); /* Local base */ - pci_outl (immr_addr | POCMR_REG2, POCMR2_MASK_ATTRIB); /* Size & attribute */ - - /* - * Set up slave window that allows PCI masters to access MPC826x local memory. - * This window is set up using the first set of Inbound ATU registers - */ - pci_outl (immr_addr | PITAR_REG0, PCI_SLV_MEM_LOCAL >> 12); /* Local base */ - pci_outl (immr_addr | PIBAR_REG0, PCI_SLV_MEM_BUS >> 12); /* PCI base */ - pci_outl (immr_addr | PICMR_REG0, PICMR0_MASK_ATTRIB); /* Size & attribute */ - - /* See above for description - puts PCI request as highest priority */ - immap->im_siu_conf.sc_ppc_alrh = 0x03124567; - - /* Park the bus on the PCI */ - immap->im_siu_conf.sc_ppc_acr = PPC_ACR_BUS_PARK_PCI; - - /* Host mode - specify the bridge as a host-PCI bridge */ - - pci_hose_write_config_byte(hose, host_devno, PCI_CLASS_CODE, - PCI_CLASS_BRIDGE_CTLR); - - /* Enable the host bridge to be a master on the PCI bus, and to act as a PCI memory target */ - pci_hose_read_config_word(hose, host_devno, PCI_COMMAND, &tempShort); - pci_hose_write_config_word(hose, host_devno, PCI_COMMAND, - tempShort | PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY); + udelay (1000); + } + + /* + * Set up master window that allows the CPU to access PCI Memory (prefetch) + * space. This window is set up using the first set of Outbound ATU registers. + */ + immap->im_pci.pci_potar0 = cpu_to_le32 (PCI_MSTR_MEM_BUS >> 12); /* PCI base */ + immap->im_pci.pci_pobar0 = cpu_to_le32 (PCI_MSTR_MEM_LOCAL >> 12); /* Local base */ + immap->im_pci.pci_pocmr0 = cpu_to_le32 (POCMR0_MASK_ATTRIB); /* Size & attribute */ + + /* + * Set up master window that allows the CPU to access PCI Memory (non-prefetch) + * space. This window is set up using the second set of Outbound ATU registers. + */ + immap->im_pci.pci_potar1 = cpu_to_le32 (PCI_MSTR_MEMIO_BUS >> 12); /* PCI base */ + immap->im_pci.pci_pobar1 = cpu_to_le32 (PCI_MSTR_MEMIO_LOCAL >> 12); /* Local base */ + immap->im_pci.pci_pocmr1 = cpu_to_le32 (POCMR1_MASK_ATTRIB); /* Size & attribute */ + + /* + * Set up master window that allows the CPU to access PCI IO space. This window + * is set up using the third set of Outbound ATU registers. + */ + immap->im_pci.pci_potar2 = cpu_to_le32 (PCI_MSTR_IO_BUS >> 12); /* PCI base */ + immap->im_pci.pci_pobar2 = cpu_to_le32 (PCI_MSTR_IO_LOCAL >> 12); /* Local base */ + immap->im_pci.pci_pocmr2 = cpu_to_le32 (POCMR2_MASK_ATTRIB); /* Size & attribute */ + + /* + * Set up slave window that allows PCI masters to access MPC826x local memory. + * This window is set up using the first set of Inbound ATU registers + */ + immap->im_pci.pci_pitar0 = cpu_to_le32 (PCI_SLV_MEM_LOCAL >> 12); /* PCI base */ + immap->im_pci.pci_pibar0 = cpu_to_le32 (PCI_SLV_MEM_BUS >> 12); /* Local base */ + immap->im_pci.pci_picmr0 = cpu_to_le32 (PICMR0_MASK_ATTRIB); /* Size & attribute */ + + /* See above for description - puts PCI request as highest priority */ + immap->im_siu_conf.sc_ppc_alrh = 0x03124567; + + /* Park the bus on the PCI */ + immap->im_siu_conf.sc_ppc_acr = PPC_ACR_BUS_PARK_PCI; + + /* Host mode - specify the bridge as a host-PCI bridge */ + + pci_hose_write_config_byte (hose, host_devno, PCI_CLASS_CODE, + PCI_CLASS_BRIDGE_CTLR); + + /* Enable the host bridge to be a master on the PCI bus, and to act as a PCI memory target */ + pci_hose_read_config_word (hose, host_devno, PCI_COMMAND, &tempShort); + pci_hose_write_config_word (hose, host_devno, PCI_COMMAND, + tempShort | PCI_COMMAND_MASTER | + PCI_COMMAND_MEMORY); -#ifdef CONFIG_MPC8266ADS /* do some bridge init, should be done on all 8260 based bridges */ - pci_hose_write_config_byte(hose, host_devno, PCI_CACHE_LINE_SIZE, 0x08); - pci_hose_write_config_byte(hose, host_devno, PCI_LATENCY_TIMER, 0xF8); -#endif + pci_hose_write_config_byte (hose, host_devno, PCI_CACHE_LINE_SIZE, + 0x08); + pci_hose_write_config_byte (hose, host_devno, PCI_LATENCY_TIMER, + 0xF8); - hose->first_busno = 0; - hose->last_busno = 0xff; + hose->first_busno = 0; + hose->last_busno = 0xff; - /* System memory space */ + /* System memory space */ #ifdef CONFIG_MPC8266ADS - pci_set_region(hose->regions + 0, - PCI_SLV_MEM_BUS, - PCI_SLV_MEM_LOCAL, - gd->ram_size, - PCI_REGION_MEM | PCI_REGION_MEMORY); + pci_set_region (hose->regions + 0, + PCI_SLV_MEM_BUS, + PCI_SLV_MEM_LOCAL, + gd->ram_size, PCI_REGION_MEM | PCI_REGION_MEMORY); #else - pci_set_region(hose->regions + 0, - CFG_SDRAM_BASE, - CFG_SDRAM_BASE, - 0x4000000, - PCI_REGION_MEM | PCI_REGION_MEMORY); + pci_set_region (hose->regions + 0, + CFG_SDRAM_BASE, + CFG_SDRAM_BASE, + 0x4000000, PCI_REGION_MEM | PCI_REGION_MEMORY); #endif - /* PCI memory space */ + /* PCI memory space */ #ifdef CONFIG_MPC8266ADS - pci_set_region(hose->regions + 1, - PCI_MSTR_MEMIO_BUS, - PCI_MSTR_MEMIO_LOCAL, - PCI_MSTR_MEMIO_SIZE, - PCI_REGION_MEM); + pci_set_region (hose->regions + 1, + PCI_MSTR_MEMIO_BUS, + PCI_MSTR_MEMIO_LOCAL, + PCI_MSTR_MEMIO_SIZE, PCI_REGION_MEM); #else - pci_set_region(hose->regions + 1, - PCI_MSTR_MEM_BUS, - PCI_MSTR_MEM_LOCAL, - PCI_MSTR_MEM_SIZE, - PCI_REGION_MEM); + pci_set_region (hose->regions + 1, + PCI_MSTR_MEM_BUS, + PCI_MSTR_MEM_LOCAL, + PCI_MSTR_MEM_SIZE, PCI_REGION_MEM); #endif - /* PCI I/O space */ - pci_set_region(hose->regions + 2, - PCI_MSTR_IO_BUS, - PCI_MSTR_IO_LOCAL, - PCI_MSTR_IO_SIZE, - PCI_REGION_IO); + /* PCI I/O space */ + pci_set_region (hose->regions + 2, + PCI_MSTR_IO_BUS, + PCI_MSTR_IO_LOCAL, PCI_MSTR_IO_SIZE, PCI_REGION_IO); + + hose->region_count = 3; + + pci_register_hose (hose); + /* Mask off master abort machine checks */ + immap->im_pci.pci_emr &= cpu_to_le32 (~PCI_ERROR_PCI_NO_RSP); + eieio (); + + hose->last_busno = pci_hose_scan (hose); - hose->region_count = 3; - pci_register_hose(hose); + /* clear the error in the error status register */ + immap->im_pci.pci_esr = cpu_to_le32 (PCI_ERROR_PCI_NO_RSP); - hose->last_busno = pci_hose_scan(hose); + /* unmask master abort machine checks */ + immap->im_pci.pci_emr |= cpu_to_le32 (PCI_ERROR_PCI_NO_RSP); } -#endif /* CONFIG_PCI */ +#endif /* CONFIG_PCI */ diff --git a/cpu/mpc8260/traps.c b/cpu/mpc8260/traps.c index a7f6f7e..deab808 100644 --- a/cpu/mpc8260/traps.c +++ b/cpu/mpc8260/traps.c @@ -35,6 +35,7 @@ #include <common.h> #include <command.h> #include <asm/processor.h> +#include <asm/m8260_pci.h> #if (CONFIG_COMMANDS & CFG_CMD_KGDB) int (*debugger_exception_handler)(struct pt_regs *) = 0; @@ -86,14 +87,12 @@ void show_regs(struct pt_regs * regs) printf("\n"); for (i = 0; i < 32; i++) { - if ((i % 8) == 0) - { + if ((i % 8) == 0) { printf("GPR%02d: ", i); } printf("%08lX ", regs->gpr[i]); - if ((i % 8) == 7) - { + if ((i % 8) == 7) { printf("\n"); } } @@ -108,6 +107,24 @@ _exception(int signr, struct pt_regs *regs) panic("Exception in kernel pc %lx signal %d",regs->nip,signr); } +#ifdef CONFIG_PCI +void dump_pci (void) +{ + + volatile immap_t *immap = (immap_t *) CFG_IMMR; + + printf ("PCI: err status %x err mask %x err ctrl %x\n", + le32_to_cpu (immap->im_pci.pci_esr), + le32_to_cpu (immap->im_pci.pci_emr), + le32_to_cpu (immap->im_pci.pci_ecr)); + printf (" error address %x error data %x ctrl %x\n", + le32_to_cpu (immap->im_pci.pci_eacr), + le32_to_cpu (immap->im_pci.pci_edcr), + le32_to_cpu (immap->im_pci.pci_eccr)); + +} +#endif + void MachineCheckException(struct pt_regs *regs) { @@ -117,6 +134,17 @@ MachineCheckException(struct pt_regs *regs) * when a device is not present. Catch it and return to * the PCI exception handler. */ +#ifdef CONFIG_PCI + volatile immap_t *immap = (immap_t *)CFG_IMMR; +#ifdef DEBUG + dump_pci(); +#endif + /* clear the error in the error status register */ + if(immap->im_pci.pci_esr && cpu_to_le32(PCI_ERROR_PCI_NO_RSP)) { + immap->im_pci.pci_esr = cpu_to_le32(PCI_ERROR_PCI_NO_RSP); + return; + } +#endif if ((fixup = search_exception_table(regs->nip)) != 0) { regs->nip = fixup; return; @@ -130,8 +158,7 @@ MachineCheckException(struct pt_regs *regs) printf("Machine check in kernel mode.\n"); printf("Caused by (from msr): "); printf("regs %p ",regs); - switch( regs->msr & 0x0000F000) - { + switch( regs->msr & 0x0000F000) { case (1<<12) : printf("Machine check signal - probably due to mm fault\n" "with mmu off\n"); @@ -150,6 +177,9 @@ MachineCheckException(struct pt_regs *regs) } show_regs(regs); print_backtrace((unsigned long *)regs->gpr[1]); +#ifdef CONFIG_PCI + dump_pci(); +#endif panic("machine check"); } |