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Diffstat (limited to 'arch/powerpc/cpu/mpc83xx/pcie.c')
-rw-r--r--arch/powerpc/cpu/mpc83xx/pcie.c44
1 files changed, 28 insertions, 16 deletions
diff --git a/arch/powerpc/cpu/mpc83xx/pcie.c b/arch/powerpc/cpu/mpc83xx/pcie.c
index 77f8906..1771c48 100644
--- a/arch/powerpc/cpu/mpc83xx/pcie.c
+++ b/arch/powerpc/cpu/mpc83xx/pcie.c
@@ -30,6 +30,22 @@ DECLARE_GLOBAL_DATA_PTR;
#define PCIE_MAX_BUSES 2
+static struct {
+ u32 base;
+ u32 size;
+} mpc83xx_pcie_cfg_space[] = {
+ {
+ .base = CONFIG_SYS_PCIE1_CFG_BASE,
+ .size = CONFIG_SYS_PCIE1_CFG_SIZE,
+ },
+#if defined(CONFIG_SYS_PCIE2_CFG_BASE) && defined(CONFIG_SYS_PCIE2_CFG_SIZE)
+ {
+ .base = CONFIG_SYS_PCIE2_CFG_BASE,
+ .size = CONFIG_SYS_PCIE2_CFG_SIZE,
+ },
+#endif
+};
+
#ifdef CONFIG_83XX_GENERIC_PCIE_REGISTER_HOSES
static int mpc83xx_pcie_remap_cfg(struct pci_controller *hose, pci_dev_t dev)
@@ -124,10 +140,7 @@ static void mpc83xx_pcie_register_hose(int bus, struct pci_region *reg,
hose->first_busno = pci_last_busno() + 1;
hose->last_busno = 0xff;
- if (bus == 0)
- hose->cfg_addr = (unsigned int *)CONFIG_SYS_PCIE1_CFG_BASE;
- else
- hose->cfg_addr = (unsigned int *)CONFIG_SYS_PCIE2_CFG_BASE;
+ hose->cfg_addr = (unsigned int *)mpc83xx_pcie_cfg_space[bus].base;
pci_set_ops(hose,
pcie_read_config_byte,
@@ -182,15 +195,9 @@ static void mpc83xx_pcie_init_bus(int bus, struct pci_region *reg)
PEX_CSB_OBCTRL_CFGWE);
out_win = &pex->bridge.pex_outbound_win[0];
- if (bus) {
- out_le32(&out_win->ar, PEX_OWAR_EN | PEX_OWAR_TYPE_CFG |
- CONFIG_SYS_PCIE2_CFG_SIZE);
- out_le32(&out_win->bar, CONFIG_SYS_PCIE2_CFG_BASE);
- } else {
- out_le32(&out_win->ar, PEX_OWAR_EN | PEX_OWAR_TYPE_CFG |
- CONFIG_SYS_PCIE1_CFG_SIZE);
- out_le32(&out_win->bar, CONFIG_SYS_PCIE1_CFG_BASE);
- }
+ out_le32(&out_win->ar, PEX_OWAR_EN | PEX_OWAR_TYPE_CFG |
+ mpc83xx_pcie_cfg_space[bus].size);
+ out_le32(&out_win->bar, mpc83xx_pcie_cfg_space[bus].base);
out_le32(&out_win->tarl, 0);
out_le32(&out_win->tarh, 0);
@@ -301,16 +308,21 @@ static void mpc83xx_pcie_init_bus(int bus, struct pci_region *reg)
* The caller must have already set SCCR, SERDES and the PCIE_LAW BARs
* must have been set to cover all of the requested regions.
*/
-void mpc83xx_pcie_init(int num_buses, struct pci_region **reg, int warmboot)
+void mpc83xx_pcie_init(int num_buses, struct pci_region **reg)
{
int i;
/*
* Release PCI RST Output signal.
* Power on to RST high must be at least 100 ms as per PCI spec.
- * On warm boots only 1 ms is required.
+ * On warm boots only 1 ms is required, but we play it safe.
*/
- udelay(warmboot ? 1000 : 100000);
+ udelay(100000);
+
+ if (num_buses > ARRAY_SIZE(mpc83xx_pcie_cfg_space)) {
+ printf("Second PCIE host contoller not configured!\n");
+ num_buses = ARRAY_SIZE(mpc83xx_pcie_cfg_space);
+ }
for (i = 0; i < num_buses; i++)
mpc83xx_pcie_init_bus(i, reg[i]);