mpc8536ds.c

来自「最新版的u-boot,2008-10-18发布」· C语言 代码 · 共 665 行 · 第 1/2 页

			       PCI_REGION_MEM);

		/* outbound io */
		pci_set_region(hose->regions + 2,
			       CFG_PCIE2_IO_BASE,
			       CFG_PCIE2_IO_PHYS,
			       CFG_PCIE2_IO_SIZE,
			       PCI_REGION_IO);

		hose->region_count = 3;
#ifdef CFG_PCIE2_MEM_BASE2
		/* outbound memory */
		pci_set_region(hose->regions + 3,
			       CFG_PCIE2_MEM_BASE2,
			       CFG_PCIE2_MEM_PHYS2,
			       CFG_PCIE2_MEM_SIZE2,
			       PCI_REGION_MEM);
		hose->region_count++;
#endif
		hose->first_busno=first_free_busno;
		pci_setup_indirect(hose, (int) &pci->cfg_addr, (int) &pci->cfg_data);

		fsl_pci_init(hose);
		first_free_busno=hose->last_busno+1;
		printf ("    PCIE2 on bus %02x - %02x\n",
			hose->first_busno,hose->last_busno);

	} else {
		printf ("    PCIE2: disabled\n");
	}

 }
#else
	gur->devdisr |= MPC85xx_DEVDISR_PCIE2; /* disable */
#endif


#ifdef CONFIG_PCI1
{
	volatile ccsr_fsl_pci_t *pci = (ccsr_fsl_pci_t *) CFG_PCI1_ADDR;
	extern void fsl_pci_init(struct pci_controller *hose);
	struct pci_controller *hose = &pci1_hose;

	uint pci_agent = (host_agent == 6);
	uint pci_speed = 66666000; /*get_clock_freq (); PCI PSPEED in [4:5] */
	uint pci_32 = 1;
	uint pci_arb = gur->pordevsr & MPC85xx_PORDEVSR_PCI1_ARB;	/* PORDEVSR[14] */
	uint pci_clk_sel = gur->porpllsr & MPC85xx_PORDEVSR_PCI1_SPD;	/* PORPLLSR[16] */


	if (!(devdisr & MPC85xx_DEVDISR_PCI1)) {
		printf ("\n    PCI: %d bit, %s MHz, %s, %s, %s (base address %x)\n",
			(pci_32) ? 32 : 64,
			(pci_speed == 33333000) ? "33" :
			(pci_speed == 66666000) ? "66" : "unknown",
			pci_clk_sel ? "sync" : "async",
			pci_agent ? "agent" : "host",
			pci_arb ? "arbiter" : "external-arbiter",
			(uint)pci
			);

		/* inbound */
		pci_set_region(hose->regions + 0,
			       CFG_PCI_MEMORY_BUS,
			       CFG_PCI_MEMORY_PHYS,
			       CFG_PCI_MEMORY_SIZE,
			       PCI_REGION_MEM | PCI_REGION_MEMORY);

		/* outbound memory */
		pci_set_region(hose->regions + 1,
			       CFG_PCI1_MEM_BASE,
			       CFG_PCI1_MEM_PHYS,
			       CFG_PCI1_MEM_SIZE,
			       PCI_REGION_MEM);

		/* outbound io */
		pci_set_region(hose->regions + 2,
			       CFG_PCI1_IO_BASE,
			       CFG_PCI1_IO_PHYS,
			       CFG_PCI1_IO_SIZE,
			       PCI_REGION_IO);
		hose->region_count = 3;
#ifdef CFG_PCI1_MEM_BASE2
		/* outbound memory */
		pci_set_region(hose->regions + 3,
			       CFG_PCI1_MEM_BASE2,
			       CFG_PCI1_MEM_PHYS2,
			       CFG_PCI1_MEM_SIZE2,
			       PCI_REGION_MEM);
		hose->region_count++;
#endif
		hose->first_busno=first_free_busno;
		pci_setup_indirect(hose, (int) &pci->cfg_addr, (int) &pci->cfg_data);

		fsl_pci_init(hose);
		first_free_busno=hose->last_busno+1;
		printf ("PCI on bus %02x - %02x\n",
			hose->first_busno,hose->last_busno);
	} else {
		printf ("    PCI: disabled\n");
	}
}
#else
	gur->devdisr |= MPC85xx_DEVDISR_PCI1; /* disable */
#endif
}


int board_early_init_r(void)
{
	unsigned int i;
	const unsigned int flashbase = CFG_FLASH_BASE;
	const u8 flash_esel = 1;

	/*
	 * Remap Boot flash + PROMJET region to caching-inhibited
	 * so that flash can be erased properly.
	 */

	/* Invalidate any remaining lines of the flash from caches. */
	for (i = 0; i < 256*1024*1024; i+=32) {
		asm volatile ("dcbi %0,%1": : "b" (flashbase), "r" (i));
		asm volatile ("icbi %0,%1": : "b" (flashbase), "r" (i));
	}

	/* invalidate existing TLB entry for flash + promjet */
	disable_tlb(flash_esel);

	set_tlb(1, flashbase, flashbase,		/* tlb, epn, rpn */
		MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G,	/* perms, wimge */
		0, flash_esel, BOOKE_PAGESZ_256M, 1);	/* ts, esel, tsize, iprot */

	return 0;
}

#ifdef CONFIG_GET_CLK_FROM_ICS307
/* decode S[0-2] to Output Divider (OD) */
static unsigned char
ics307_S_to_OD[] = {
	10, 2, 8, 4, 5, 7, 3, 6
};

/* Calculate frequency being generated by ICS307-02 clock chip based upon
 * the control bytes being programmed into it. */
/* XXX: This function should probably go into a common library */
static unsigned long
ics307_clk_freq (unsigned char cw0, unsigned char cw1, unsigned char cw2)
{
	const unsigned long long InputFrequency = CONFIG_ICS307_REFCLK_HZ;
	unsigned long VDW = ((cw1 << 1) & 0x1FE) + ((cw2 >> 7) & 1);
	unsigned long RDW = cw2 & 0x7F;
	unsigned long OD = ics307_S_to_OD[cw0 & 0x7];
	unsigned long freq;

	/* CLK1Frequency = InputFrequency * 2 * (VDW + 8) / ((RDW + 2) * OD) */

	/* cw0:  C1 C0 TTL F1 F0 S2 S1 S0
	 * cw1:  V8 V7 V6 V5 V4 V3 V2 V1
	 * cw2:  V0 R6 R5 R4 R3 R2 R1 R0
	 *
	 * R6:R0 = Reference Divider Word (RDW)
	 * V8:V0 = VCO Divider Word (VDW)
	 * S2:S0 = Output Divider Select (OD)
	 * F1:F0 = Function of CLK2 Output
	 * TTL = duty cycle
	 * C1:C0 = internal load capacitance for cyrstal
	 */

	/* Adding 1 to get a "nicely" rounded number, but this needs
	 * more tweaking to get a "properly" rounded number. */

	freq = 1 + (InputFrequency * 2 * (VDW + 8) / ((RDW + 2) * OD));

	debug("ICS307: CW[0-2]: %02X %02X %02X => %u Hz\n", cw0, cw1, cw2,
		freq);
	return freq;
}

unsigned long
get_board_sys_clk(ulong dummy)
{
	return ics307_clk_freq (
	    in8(PIXIS_BASE + PIXIS_VSYSCLK0),
	    in8(PIXIS_BASE + PIXIS_VSYSCLK1),
	    in8(PIXIS_BASE + PIXIS_VSYSCLK2)
	);
}

unsigned long
get_board_ddr_clk(ulong dummy)
{
	return ics307_clk_freq (
	    in8(PIXIS_BASE + PIXIS_VDDRCLK0),
	    in8(PIXIS_BASE + PIXIS_VDDRCLK1),
	    in8(PIXIS_BASE + PIXIS_VDDRCLK2)
	);
}
#else
unsigned long
get_board_sys_clk(ulong dummy)
{
	u8 i;
	ulong val = 0;

	i = in8(PIXIS_BASE + PIXIS_SPD);
	i &= 0x07;

	switch (i) {
	case 0:
		val = 33333333;
		break;
	case 1:
		val = 40000000;
		break;
	case 2:
		val = 50000000;
		break;
	case 3:
		val = 66666666;
		break;
	case 4:
		val = 83333333;
		break;
	case 5:
		val = 100000000;
		break;
	case 6:
		val = 133333333;
		break;
	case 7:
		val = 166666666;
		break;
	}

	return val;
}

unsigned long
get_board_ddr_clk(ulong dummy)
{
	u8 i;
	ulong val = 0;

	i = in8(PIXIS_BASE + PIXIS_SPD);
	i &= 0x38;
	i >>= 3;

	switch (i) {
	case 0:
		val = 33333333;
		break;
	case 1:
		val = 40000000;
		break;
	case 2:
		val = 50000000;
		break;
	case 3:
		val = 66666666;
		break;
	case 4:
		val = 83333333;
		break;
	case 5:
		val = 100000000;
		break;
	case 6:
		val = 133333333;
		break;
	case 7:
		val = 166666666;
		break;
	}
	return val;
}
#endif

int is_sata_supported(void)
{
	volatile ccsr_gur_t *gur = (void *)(CFG_MPC85xx_GUTS_ADDR);
	uint sdrs2_io_sel =
		(gur->pordevsr & MPC85xx_PORDEVSR_SRDS2_IO_SEL) >> 27;
	if (sdrs2_io_sel & 0x04)
		return 0;

	return 1;
}

#if defined(CONFIG_OF_BOARD_SETUP)
void
ft_board_setup(void *blob, bd_t *bd)
{
	int node, tmp[2];
	const char *path;

	ft_cpu_setup(blob, bd);

	node = fdt_path_offset(blob, "/aliases");
	tmp[0] = 0;
	if (node >= 0) {
#ifdef CONFIG_PCI1
		path = fdt_getprop(blob, node, "pci0", NULL);
		if (path) {
			tmp[1] = pci1_hose.last_busno - pci1_hose.first_busno;
			do_fixup_by_path(blob, path, "bus-range", &tmp, 8, 1);
		}
#endif
#ifdef CONFIG_PCIE2
		path = fdt_getprop(blob, node, "pci1", NULL);
		if (path) {
			tmp[1] = pcie2_hose.last_busno - pcie2_hose.first_busno;
			do_fixup_by_path(blob, path, "bus-range", &tmp, 8, 1);
		}
#endif
#ifdef CONFIG_PCIE1
		path = fdt_getprop(blob, node, "pci2", NULL);
		if (path) {
			tmp[1] = pcie1_hose.last_busno - pcie1_hose.first_busno;
			do_fixup_by_path(blob, path, "bus-range", &tmp, 8, 1);
		}
#endif
#ifdef CONFIG_PCIE3
		path = fdt_getprop(blob, node, "pci3", NULL);
		if (path) {
			tmp[1] = pcie3_hose.last_busno - pcie3_hose.first_busno;
			do_fixup_by_path(blob, path, "bus-range", &tmp, 8, 1);
		}
#endif
	}
}
#endif