summaryrefslogtreecommitdiff
path: root/board/eltec/bab7xx/pci.c
diff options
context:
space:
mode:
authorwdenk <wdenk>2002-09-17 21:26:59 +0000
committerwdenk <wdenk>2002-09-17 21:26:59 +0000
commite69b4b8f1c072326de90692dec16b46bac21c2b5 (patch)
treec27fb7ca815c16246c52db016842877bae0efa27 /board/eltec/bab7xx/pci.c
parent0669d4d3150a0c647658b7bcc6dc8c41fba90bea (diff)
downloadu-boot-imx-e69b4b8f1c072326de90692dec16b46bac21c2b5.zip
u-boot-imx-e69b4b8f1c072326de90692dec16b46bac21c2b5.tar.gz
u-boot-imx-e69b4b8f1c072326de90692dec16b46bac21c2b5.tar.bz2
Initial revision
Diffstat (limited to 'board/eltec/bab7xx/pci.c')
-rw-r--r--board/eltec/bab7xx/pci.c120
1 files changed, 120 insertions, 0 deletions
diff --git a/board/eltec/bab7xx/pci.c b/board/eltec/bab7xx/pci.c
new file mode 100644
index 0000000..2fd8e13
--- /dev/null
+++ b/board/eltec/bab7xx/pci.c
@@ -0,0 +1,120 @@
+/*
+ * (C) Copyright 2002 ELTEC Elektronik AG
+ * Frank Gottschling <fgottschling@eltec.de>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+/*
+ * PCI initialisation for the MPC10x.
+ */
+
+#include <common.h>
+#include <pci.h>
+#include <mpc106.h>
+
+#ifdef CONFIG_PCI
+
+struct pci_controller local_hose;
+
+void pci_init(void)
+{
+ struct pci_controller* hose = (struct pci_controller *)&local_hose;
+ u32 reg32;
+ u16 reg16;
+
+ hose->first_busno = 0;
+ hose->last_busno = 0xff;
+
+ pci_set_region(hose->regions + 0,
+ CFG_PCI_MEMORY_BUS,
+ CFG_PCI_MEMORY_PHYS,
+ /*
+ * Attention: pci_hose_phys_to_bus() failes in address compare,
+ * so we need (CFG_PCI_MEMORY_SIZE-1)
+ */
+ CFG_PCI_MEMORY_SIZE-1,
+ PCI_REGION_MEM | PCI_REGION_MEMORY);
+
+ /* PCI memory space */
+ pci_set_region(hose->regions + 1,
+ CFG_PCI_MEM_BUS,
+ CFG_PCI_MEM_PHYS,
+ CFG_PCI_MEM_SIZE,
+ PCI_REGION_MEM);
+
+ /* ISA/PCI memory space */
+ pci_set_region(hose->regions + 2,
+ CFG_ISA_MEM_BUS,
+ CFG_ISA_MEM_PHYS,
+ CFG_ISA_MEM_SIZE,
+ PCI_REGION_MEM);
+
+ /* PCI I/O space */
+ pci_set_region(hose->regions + 3,
+ CFG_PCI_IO_BUS,
+ CFG_PCI_IO_PHYS,
+ CFG_PCI_IO_SIZE,
+ PCI_REGION_IO);
+
+ /* ISA/PCI I/O space */
+ pci_set_region(hose->regions + 4,
+ CFG_ISA_IO_BUS,
+ CFG_ISA_IO_PHYS,
+ CFG_ISA_IO_SIZE,
+ PCI_REGION_IO);
+
+ hose->region_count = 5;
+
+ pci_setup_indirect(hose,
+ MPC106_REG_ADDR,
+ MPC106_REG_DATA);
+
+ pci_register_hose(hose);
+
+ hose->last_busno = pci_hose_scan(hose);
+
+ /* Initialises the MPC10x PCI Configuration regs. */
+ pci_read_config_dword (PCI_BDF(0,0,0), PCI_PICR2, &reg32);
+ reg32 |= PICR2_CF_SNOOP_WS(3) |
+ PICR2_CF_FLUSH_L2 |
+ PICR2_CF_L2_HIT_DELAY(3) |
+ PICR2_CF_APHASE_WS(3);
+ reg32 &= ~(PICR2_L2_EN | PICR2_L2_UPDATE_EN);
+ pci_write_config_dword (PCI_BDF(0,0,0), PCI_PICR2, reg32);
+
+ pci_read_config_word (PCI_BDF(0,0,0), PCI_COMMAND, &reg16);
+ reg16 |= PCI_COMMAND_SERR | PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY;
+ pci_write_config_word(PCI_BDF(0,0,0), PCI_COMMAND, reg16);
+
+ /* Clear non-reserved bits in status register */
+ pci_write_config_word(PCI_BDF(0,0,0), PCI_STATUS, 0xffff);
+
+ pci_read_config_dword (PCI_BDF(0,0,0), PCI_PICR1, &reg32);
+ reg32 |= PICR1_CF_CBA(63) |
+ PICR1_CF_BREAD_WS(2) |
+ PICR1_MCP_EN |
+ PICR1_CF_DPARK |
+ PICR1_PROC_TYPE_604 |
+ PICR1_CF_LOOP_SNOOP |
+ PICR1_CF_APARK;
+ pci_write_config_dword (PCI_BDF(0,0,0), PCI_PICR1, reg32);
+}
+
+#endif /* CONFIG_PCI */