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mpc83xx: Add PCI-E support for MPC8315ERDB boards 

MPC8315ERDB boards features PCI-E x1 and Mini PCI-E x1 ports. Let's
support them.

Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
This commit is contained in:
Anton Vorontsov 2009-01-08 04:26:17 +03:00 committed by Kim Phillips
parent fd6646c0b9
commit 8f11e34b31
2 changed files with 73 additions and 0 deletions
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52
board/freescale/mpc8315erdb/mpc8315erdb.c
View File

@ -30,6 +30,7 @@
#include <pci.h>
#include <mpc83xx.h>
#include <netdev.h>
#include <asm/io.h>
DECLARE_GLOBAL_DATA_PTR;
@ -95,12 +96,45 @@ static struct pci_region pci_regions[] = {
}
};
static struct pci_region pcie_regions_0[] = {
{
.bus_start = CONFIG_SYS_PCIE1_MEM_BASE,
.phys_start = CONFIG_SYS_PCIE1_MEM_PHYS,
.size = CONFIG_SYS_PCIE1_MEM_SIZE,
.flags = PCI_REGION_MEM,
},
{
.bus_start = CONFIG_SYS_PCIE1_IO_BASE,
.phys_start = CONFIG_SYS_PCIE1_IO_PHYS,
.size = CONFIG_SYS_PCIE1_IO_SIZE,
.flags = PCI_REGION_IO,
},
};
static struct pci_region pcie_regions_1[] = {
{
.bus_start = CONFIG_SYS_PCIE2_MEM_BASE,
.phys_start = CONFIG_SYS_PCIE2_MEM_PHYS,
.size = CONFIG_SYS_PCIE2_MEM_SIZE,
.flags = PCI_REGION_MEM,
},
{
.bus_start = CONFIG_SYS_PCIE2_IO_BASE,
.phys_start = CONFIG_SYS_PCIE2_IO_PHYS,
.size = CONFIG_SYS_PCIE2_IO_SIZE,
.flags = PCI_REGION_IO,
},
};
void pci_init_board(void)
{
volatile immap_t *immr = (volatile immap_t *)CONFIG_SYS_IMMR;
volatile sysconf83xx_t *sysconf = &immr->sysconf;
volatile clk83xx_t *clk = (volatile clk83xx_t *)&immr->clk;
volatile law83xx_t *pci_law = immr->sysconf.pcilaw;
volatile law83xx_t *pcie_law = sysconf->pcielaw;
struct pci_region *reg[] = { pci_regions };
struct pci_region *pcie_reg[] = { pcie_regions_0, pcie_regions_1, };
int warmboot;
/* Enable all 3 PCI_CLK_OUTPUTs. */
@ -119,6 +153,24 @@ void pci_init_board(void)
warmboot |= immr->pmc.pmccr1 & PMCCR1_POWER_OFF;
mpc83xx_pci_init(1, reg, warmboot);
/* Configure the clock for PCIE controller */
clrsetbits_be32(&clk->sccr, SCCR_PCIEXP1CM | SCCR_PCIEXP2CM,
SCCR_PCIEXP1CM_1 | SCCR_PCIEXP2CM_1);
/* Deassert the resets in the control register */
out_be32(&sysconf->pecr1, 0xE0008000);
out_be32(&sysconf->pecr2, 0xE0008000);
udelay(2000);
/* Configure PCI Express Local Access Windows */
out_be32(&pcie_law[0].bar, CONFIG_SYS_PCIE1_BASE & LAWBAR_BAR);
out_be32(&pcie_law[0].ar, LBLAWAR_EN | LBLAWAR_512MB);
out_be32(&pcie_law[1].bar, CONFIG_SYS_PCIE2_BASE & LAWBAR_BAR);
out_be32(&pcie_law[1].ar, LBLAWAR_EN | LBLAWAR_512MB);
mpc83xx_pcie_init(2, pcie_reg, warmboot);
}
#if defined(CONFIG_OF_BOARD_SETUP)

21
include/configs/MPC8315ERDB.h
View File

@ -308,8 +308,29 @@
#define CONFIG_SYS_PCI_SLV_MEM_BUS 0x00000000
#define CONFIG_SYS_PCI_SLV_MEM_SIZE 0x80000000
#define CONFIG_SYS_PCIE1_BASE 0xA0000000
#define CONFIG_SYS_PCIE1_MEM_BASE 0xA0000000
#define CONFIG_SYS_PCIE1_MEM_PHYS 0xA0000000
#define CONFIG_SYS_PCIE1_MEM_SIZE 0x10000000
#define CONFIG_SYS_PCIE1_CFG_BASE 0xB0000000
#define CONFIG_SYS_PCIE1_CFG_SIZE 0x01000000
#define CONFIG_SYS_PCIE1_IO_BASE 0x00000000
#define CONFIG_SYS_PCIE1_IO_PHYS 0xB1000000
#define CONFIG_SYS_PCIE1_IO_SIZE 0x00800000
#define CONFIG_SYS_PCIE2_BASE 0xC0000000
#define CONFIG_SYS_PCIE2_MEM_BASE 0xC0000000
#define CONFIG_SYS_PCIE2_MEM_PHYS 0xC0000000
#define CONFIG_SYS_PCIE2_MEM_SIZE 0x10000000
#define CONFIG_SYS_PCIE2_CFG_BASE 0xD0000000
#define CONFIG_SYS_PCIE2_CFG_SIZE 0x01000000
#define CONFIG_SYS_PCIE2_IO_BASE 0x00000000
#define CONFIG_SYS_PCIE2_IO_PHYS 0xD1000000
#define CONFIG_SYS_PCIE2_IO_SIZE 0x00800000
#define CONFIG_PCI
#define CONFIG_83XX_GENERIC_PCI 1 /* Use generic PCI setup */
#define CONFIG_83XX_GENERIC_PCIE 1
#define CONFIG_NET_MULTI
#define CONFIG_PCI_PNP /* do pci plug-and-play */