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-rw-r--r--cpu/ppc4xx/4xx_pci.c106
1 files changed, 106 insertions, 0 deletions
diff --git a/cpu/ppc4xx/4xx_pci.c b/cpu/ppc4xx/4xx_pci.c
index 40017f4..20e134b 100644
--- a/cpu/ppc4xx/4xx_pci.c
+++ b/cpu/ppc4xx/4xx_pci.c
@@ -77,6 +77,7 @@
#include <asm/4xx_pci.h>
#endif
#include <asm/processor.h>
+#include <asm/io.h>
#include <pci.h>
#ifdef CONFIG_PCI
@@ -499,6 +500,111 @@ int __is_pci_host(struct pci_controller *hose)
int is_pci_host(struct pci_controller *hose)
__attribute__((weak, alias("__is_pci_host")));
+/*
+ * pci_target_init
+ *
+ * The bootstrap configuration provides default settings for the pci
+ * inbound map (PIM). But the bootstrap config choices are limited and
+ * may not be sufficient for a given board.
+ */
+#if defined(CONFIG_SYS_PCI_TARGET_INIT)
+#if defined(CONFIG_440EP) || defined(CONFIG_440EPX) || \
+ defined(CONFIG_440GR) || defined(CONFIG_440GRX)
+void __pci_target_init(struct pci_controller *hose)
+{
+ /*
+ * Set up Direct MMIO registers
+ */
+
+ /*
+ * PowerPC440 EP PCI Master configuration.
+ * Map one 1Gig range of PLB/processor addresses to PCI memory space.
+ * PLB address 0xA0000000-0xDFFFFFFF ==> PCI address 0xA0000000-0xDFFFFFFF
+ * Use byte reversed out routines to handle endianess.
+ * Make this region non-prefetchable.
+ */
+ /* PMM0 Mask/Attribute - disabled b4 setting */
+ out_le32((void *)PCIL0_PMM0MA, 0x00000000);
+ /* PMM0 Local Address */
+ out_le32((void *)PCIL0_PMM0LA, CONFIG_SYS_PCI_MEMBASE);
+ /* PMM0 PCI Low Address */
+ out_le32((void *)PCIL0_PMM0PCILA, CONFIG_SYS_PCI_MEMBASE);
+ /* PMM0 PCI High Address */
+ out_le32((void *)PCIL0_PMM0PCIHA, 0x00000000);
+ /* 512M + No prefetching, and enable region */
+ out_le32((void *)PCIL0_PMM0MA, 0xE0000001);
+
+ /* PMM1 Mask/Attribute - disabled b4 setting */
+ out_le32((void *)PCIL0_PMM1MA, 0x00000000);
+ /* PMM1 Local Address */
+ out_le32((void *)PCIL0_PMM1LA, CONFIG_SYS_PCI_MEMBASE2);
+ /* PMM1 PCI Low Address */
+ out_le32((void *)PCIL0_PMM1PCILA, CONFIG_SYS_PCI_MEMBASE2);
+ /* PMM1 PCI High Address */
+ out_le32((void *)PCIL0_PMM1PCIHA, 0x00000000);
+ /* 512M + No prefetching, and enable region */
+ out_le32((void *)PCIL0_PMM1MA, 0xE0000001);
+
+ out_le32((void *)PCIL0_PTM1MS, 0x00000001); /* Memory Size/Attribute */
+ out_le32((void *)PCIL0_PTM1LA, 0); /* Local Addr. Reg */
+ out_le32((void *)PCIL0_PTM2MS, 0); /* Memory Size/Attribute */
+ out_le32((void *)PCIL0_PTM2LA, 0); /* Local Addr. Reg */
+
+ /*
+ * Set up Configuration registers
+ */
+
+ /* Program the board's subsystem id/vendor id */
+ pci_write_config_word(0, PCI_SUBSYSTEM_VENDOR_ID,
+ CONFIG_SYS_PCI_SUBSYS_VENDORID);
+ pci_write_config_word(0, PCI_SUBSYSTEM_ID, CONFIG_SYS_PCI_SUBSYS_ID);
+
+ /* Configure command register as bus master */
+ pci_write_config_word(0, PCI_COMMAND, PCI_COMMAND_MASTER);
+
+ /* 240nS PCI clock */
+ pci_write_config_word(0, PCI_LATENCY_TIMER, 1);
+
+ /* No error reporting */
+ pci_write_config_word(0, PCI_ERREN, 0);
+
+ pci_write_config_dword(0, PCI_BRDGOPT2, 0x00000101);
+}
+#else /* defined(CONFIG_440EP) ... */
+void __pci_target_init(struct pci_controller * hose)
+{
+ /*
+ * Disable everything
+ */
+ out_le32((void *)PCIL0_PIM0SA, 0); /* disable */
+ out_le32((void *)PCIL0_PIM1SA, 0); /* disable */
+ out_le32((void *)PCIL0_PIM2SA, 0); /* disable */
+ out_le32((void *)PCIL0_EROMBA, 0); /* disable expansion rom */
+
+ /*
+ * Map all of SDRAM to PCI address 0x0000_0000. Note that the 440
+ * strapping options do not support sizes such as 128/256 MB.
+ */
+ out_le32((void *)PCIL0_PIM0LAL, CONFIG_SYS_SDRAM_BASE);
+ out_le32((void *)PCIL0_PIM0LAH, 0);
+ out_le32((void *)PCIL0_PIM0SA, ~(gd->ram_size - 1) | 1);
+ out_le32((void *)PCIL0_BAR0, 0);
+
+ /*
+ * Program the board's subsystem id/vendor id
+ */
+ out_le16((void *)PCIL0_SBSYSVID, CONFIG_SYS_PCI_SUBSYS_VENDORID);
+ out_le16((void *)PCIL0_SBSYSID, CONFIG_SYS_PCI_SUBSYS_DEVICEID);
+
+ out_le16((void *)PCIL0_CMD, in_le16((void *)PCIL0_CMD) |
+ PCI_COMMAND_MEMORY);
+}
+#endif /* defined(CONFIG_440EP) ... */
+void pci_target_init(struct pci_controller * hose)
+ __attribute__((weak, alias("__pci_target_init")));
+
+#endif /* defined(CONFIG_SYS_PCI_TARGET_INIT) */
+
int pci_440_init (struct pci_controller *hose)
{
int reg_num = 0;