diff options
Diffstat (limited to 'cpu/mpc8260')
| -rw-r--r-- | cpu/mpc8260/pci.c | 219 | ||||
| -rw-r--r-- | cpu/mpc8260/start.S | 4 |
2 files changed, 189 insertions, 34 deletions
diff --git a/cpu/mpc8260/pci.c b/cpu/mpc8260/pci.c index b7a04d5..47c5dae 100644 --- a/cpu/mpc8260/pci.c +++ b/cpu/mpc8260/pci.c @@ -26,22 +26,30 @@ #ifdef CONFIG_PCI #include <pci.h> +#include <mpc8260.h> #include <asm/m8260_pci.h> /* * Local->PCI map (from CPU) controlled by * MPC826x master window * - * 0x80000000 - 0xBFFFFFFF Total CPU2PCI space PCIBR0 + * 0x80000000 - 0xBFFFFFFF CPU2PCI space PCIBR0 + * 0xF4000000 - 0xF7FFFFFF CPU2PCI space PCIBR1 * - * 0x80000000 - 0x8FFFFFFF PCI Mem with prefetch (Outbound ATU #1) - * 0x90000000 - 0x9FFFFFFF PCI Mem w/o prefetch (Outbound ATU #2) - * 0xA0000000 - 0xAFFFFFFF 32-bit PCI IO (Outbound ATU #3) + * 0x80000000 - 0x9FFFFFFF 0x80000000 - 0x9FFFFFFF (Outbound ATU #1) + * PCI Mem with prefetch + * + * 0xA0000000 - 0xBFFFFFFF 0xA0000000 - 0xBFFFFFFF (Outbound ATU #2) + * PCI Mem w/o prefetch + * + * 0xF4000000 - 0xF7FFFFFF 0x00000000 - 0x03FFFFFF (Outbound ATU #3) + * 32-bit PCI IO * * PCI->Local map (from PCI) * MPC826x slave window controlled by * - * 0x00000000 - 0x07FFFFFF MPC826x local memory (Inbound ATU #1) + * 0x00000000 - 0x1FFFFFFF 0x00000000 - 0x1FFFFFFF (Inbound ATU #1) + * MPC826x local memory */ /* @@ -49,20 +57,57 @@ * This window is set up using the first set of Inbound ATU registers */ -#define PCI_SLV_MEM_LOCAL CFG_SDRAM_BASE /* Local base */ -#define PCI_SLV_MEM_BUS 0x00000000 /* PCI base */ +#ifndef CFG_PCI_SLV_MEM_LOCAL +#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 */ +#else +#define PCI_SLV_MEM_BUS CFG_PCI_SLV_MEM_BUS +#endif + +#ifndef CFG_PICMR0_MASK_ATTRIB #define PICMR0_MASK_ATTRIB (PICMR_MASK_512MB | PICMR_ENABLE | \ PICMR_PREFETCH_EN) +#else +#define PICMR0_MASK_ATTRIB CFG_PICMR0_MASK_ATTRIB +#endif /* - * This is the window that allows the CPU to access PCI address space. - * It will be setup with the SIU PCIBR0 register. All three PCI master - * windows, which allow the CPU to access PCI prefetch, non prefetch, - * and IO space (see below), must all fit within this window. + * These are the windows that allow the CPU to access PCI address space. + * All three PCI master windows, which allow the CPU to access PCI + * prefetch, non prefetch, and IO space (see below), must all fit within + * these windows. */ -#define PCI_MSTR_LOCAL 0x80000000 /* Local base */ +/* PCIBR0 */ +#ifndef CFG_PCI_MSTR0_LOCAL +#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 */ +#else +#define PCIMSK0_MASK CFG_PCIMSK0_MASK +#endif + +/* PCIBR1 */ +#ifndef CFG_PCI_MSTR1_LOCAL +#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 */ +#else +#define PCIMSK1_MASK CFG_PCIMSK1_MASK +#endif /* * Master window that allows the CPU to access PCI Memory (prefetch). @@ -70,11 +115,35 @@ * in the bridge. */ -#define PCI_MSTR_MEM_LOCAL 0x80000000 /* Local base */ -#define PCI_MSTR_MEM_BUS 0x80000000 /* PCI base */ -#define CPU_PCI_MEM_START PCI_MSTR_MEM_LOCAL -#define PCI_MSTR_MEM_SIZE 0x10000000 /* 256MB */ +#ifndef CFG_PCI_MSTR_MEM_LOCAL +#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 */ +#else +#define PCI_MSTR_MEM_BUS CFG_PCI_MSTR_MEM_BUS +#endif + +#ifndef CFG_CPU_PCI_MEM_START +#define CPU_PCI_MEM_START PCI_MSTR_MEM_LOCAL +#else +#define CPU_PCI_MEM_START CFG_CPU_PCI_MEM_START +#endif + +#ifndef CFG_PCI_MSTR_MEM_SIZE +#define PCI_MSTR_MEM_SIZE 0x10000000 /* 256MB */ +#else +#define PCI_MSTR_MEM_SIZE CFG_PCI_MSTR_MEM_SIZE +#endif + +#ifndef CFG_POCMR0_MASK_ATTRIB #define POCMR0_MASK_ATTRIB (POCMR_MASK_256MB | POCMR_ENABLE | POCMR_PREFETCH_EN) +#else +#define POCMR0_MASK_ATTRIB CFG_POCMR0_MASK_ATTRIB +#endif /* * Master window that allows the CPU to access PCI Memory (non-prefetch). @@ -82,11 +151,35 @@ * in the bridge. */ -#define PCI_MSTR_MEMIO_LOCAL 0x90000000 /* Local base */ -#define PCI_MSTR_MEMIO_BUS 0x90000000 /* PCI base */ -#define CPU_PCI_MEMIO_START PCI_MSTR_MEMIO_LOCAL -#define PCI_MSTR_MEMIO_SIZE 0x10000000 /* 256MB */ -#define POCMR1_MASK_ATTRIB (POCMR_MASK_256MB | POCMR_ENABLE) +#ifndef CFG_PCI_MSTR_MEMIO_LOCAL +#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 */ +#else +#define PCI_MSTR_MEMIO_BUS CFG_PCI_MSTR_MEMIO_BUS +#endif + +#ifndef CFG_CPU_PCI_MEMIO_START +#define CPU_PCI_MEMIO_START PCI_MSTR_MEMIO_LOCAL +#else +#define CPU_PCI_MEMIO_START CFG_CPU_PCI_MEMIO_START +#endif + +#ifndef CFG_PCI_MSTR_MEMIO_SIZE +#define PCI_MSTR_MEMIO_SIZE 0x20000000 /* 512MB */ +#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) +#else +#define POCMR1_MASK_ATTRIB CFG_POCMR1_MASK_ATTRIB +#endif /* * Master window that allows the CPU to access PCI IO space. @@ -94,15 +187,35 @@ * in the bridge. */ -#define PCI_MSTR_IO_LOCAL 0xA0000000 /* Local base */ -#ifdef CONFIG_ATC -#define PCI_MSTR_IO_BUS 0x00000000 /* PCI base */ -#else -#define PCI_MSTR_IO_BUS 0xA0000000 /* PCI base */ +#ifndef CFG_PCI_MSTR_IO_LOCAL +#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 */ +#else +#define PCI_MSTR_IO_BUS CFG_PCI_MSTR_IO_BUS +#endif + +#ifndef CFG_CPU_PCI_IO_START +#define CPU_PCI_IO_START PCI_MSTR_IO_LOCAL +#else +#define CPU_PCI_IO_START CFG_CPU_PCI_IO_START +#endif + +#ifndef CFG_PCI_MSTR_IO_SIZE +#define PCI_MSTR_IO_SIZE 0x10000000 /* 256MB */ +#else +#define PCI_MSTR_IO_SIZE CFG_PCI_MSTR_IO_SIZE #endif -#define CPU_PCI_IO_START PCI_MSTR_IO_LOCAL -#define PCI_MSTR_IO_SIZE 0x10000000 /* 256MB */ + +#ifndef CFG_POCMR2_MASK_ATTRIB #define POCMR2_MASK_ATTRIB (POCMR_MASK_256MB | POCMR_ENABLE | POCMR_PCI_IO) +#else +#define POCMR2_MASK_ATTRIB CFG_POCMR2_MASK_ATTRIB +#endif /* PCI bus configuration registers. */ @@ -117,6 +230,9 @@ static inline void pci_outl(u32 addr, u32 data) void pci_mpc8250_init(struct pci_controller *hose) { +#ifdef CONFIG_MPC8266ADS + DECLARE_GLOBAL_DATA_PTR; +#endif u16 tempShort; u32 immr_addr = CFG_IMMR; volatile immap_t *immap = (immap_t *) CFG_IMMR; @@ -125,11 +241,19 @@ void pci_mpc8250_init(struct pci_controller *hose) 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]). + */ +#ifdef CONFIG_MPC8266ADS + 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 = 0x00640000; +#endif /* Make PCI lowest priority */ /* Each 4 bits is a device bus request and the MS 4bits @@ -153,18 +277,33 @@ void pci_mpc8250_init(struct pci_controller *hose) immap->im_siu_conf.sc_ppc_acr = 0x6; /* - * Set up master window that allows the CPU to access PCI space. This - * window is set up using the first SIU PCIBR registers. + * 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_MSTR_LOCAL | PCIBR_ENABLE; + 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; +#endif /* Release PCI RST (by default the PCI RST signal is held low) */ pci_outl (immr_addr | PCI_GCR_REG, PCIGCR_PCI_BUS_EN); /* give it some time */ - udelay(1000); + { +#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) +#endif + udelay(1000); + } /* * Set up master window that allows the CPU to access PCI Memory (prefetch) @@ -218,18 +357,34 @@ void pci_mpc8250_init(struct pci_controller *hose) hose->last_busno = 0xff; /* 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); +#else pci_set_region(hose->regions + 0, CFG_SDRAM_BASE, CFG_SDRAM_BASE, 0x4000000, PCI_REGION_MEM | PCI_REGION_MEMORY); +#endif /* PCI 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); +#else 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, diff --git a/cpu/mpc8260/start.S b/cpu/mpc8260/start.S index d79c578..9ceb704 100644 --- a/cpu/mpc8260/start.S +++ b/cpu/mpc8260/start.S @@ -67,7 +67,7 @@ GOT_ENTRY(transfer_to_handler) GOT_ENTRY(_end) - GOT_ENTRY(.bss) + GOT_ENTRY(__bss_start) #if defined(CONFIG_HYMOD) GOT_ENTRY(environment) #endif @@ -987,7 +987,7 @@ clear_bss: /* * Now clear BSS segment */ - lwz r3,GOT(.bss) + lwz r3,GOT(__bss_start) #if defined(CONFIG_HYMOD) /* * For HYMOD - the environment is the very last item in flash. |