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authorWolfgang Denk <wd@denx.de>2008-06-11 21:27:31 +0200
committerWolfgang Denk <wd@denx.de>2008-06-11 21:27:31 +0200
commit2395db48869e759c4422efa3d3c25161601aa17b (patch)
tree4046c04770a56701a4d773bf7d22cc288a9f085f /board/mvblm7/pci.c
parent3c6e979a94c91e0e7f28356622c79784b621cbde (diff)
parent2329fe113d847e43cca8e4a0e4edd613b50b8492 (diff)
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Merge branch 'master' of git://www.denx.de/git/u-boot-mpc83xx
Diffstat (limited to 'board/mvblm7/pci.c')
-rw-r--r--board/mvblm7/pci.c133
1 files changed, 133 insertions, 0 deletions
diff --git a/board/mvblm7/pci.c b/board/mvblm7/pci.c
new file mode 100644
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+++ b/board/mvblm7/pci.c
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+/*
+ * Copyright (C) Freescale Semiconductor, Inc. 2006. All rights reserved.
+ *
+ * (C) Copyright 2008
+ * Andre Schwarz, Matrix Vision GmbH, andre.schwarz@matrix-vision.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
+ */
+
+#include <common.h>
+#if defined(CONFIG_OF_LIBFDT)
+#include <libfdt.h>
+#endif
+#include <pci.h>
+#include <mpc83xx.h>
+#include <fpga.h>
+#include "mvblm7.h"
+#include "fpga.h"
+
+DECLARE_GLOBAL_DATA_PTR;
+
+int mvblm7_load_fpga(void)
+{
+ size_t data_size = 0;
+ void *fpga_data = NULL;
+ char *datastr = getenv("fpgadata");
+ char *sizestr = getenv("fpgadatasize");
+
+ if (datastr)
+ fpga_data = (void *)simple_strtoul(datastr, NULL, 16);
+ if (sizestr)
+ data_size = (size_t)simple_strtoul(sizestr, NULL, 16);
+
+ return fpga_load(0, fpga_data, data_size);
+}
+
+static struct pci_region pci_regions[] = {
+ {
+ bus_start: CFG_PCI1_MEM_BASE,
+ phys_start: CFG_PCI1_MEM_PHYS,
+ size: CFG_PCI1_MEM_SIZE,
+ flags: PCI_REGION_MEM | PCI_REGION_PREFETCH
+ },
+ {
+ bus_start: CFG_PCI1_MMIO_BASE,
+ phys_start: CFG_PCI1_MMIO_PHYS,
+ size: CFG_PCI1_MMIO_SIZE,
+ flags: PCI_REGION_MEM
+ },
+ {
+ bus_start: CFG_PCI1_IO_BASE,
+ phys_start: CFG_PCI1_IO_PHYS,
+ size: CFG_PCI1_IO_SIZE,
+ flags: PCI_REGION_IO
+ }
+};
+
+void pci_init_board(void)
+{
+ char *s;
+ int i;
+ int warmboot;
+ int load_fpga;
+ volatile immap_t *immr;
+ volatile pcictrl83xx_t *pci_ctrl;
+ volatile gpio83xx_t *gpio;
+ volatile clk83xx_t *clk;
+ volatile law83xx_t *pci_law;
+ struct pci_region *reg[] = { pci_regions };
+
+ load_fpga = 1;
+ immr = (immap_t *) CFG_IMMR;
+ clk = (clk83xx_t *) &immr->clk;
+ pci_ctrl = immr->pci_ctrl;
+ pci_law = immr->sysconf.pcilaw;
+ gpio = (volatile gpio83xx_t *)&immr->gpio[0];
+
+ s = getenv("skip_fpga");
+ if (s) {
+ printf("found 'skip_fpga' -> FPGA _not_ loaded !\n");
+ load_fpga = 0;
+ }
+
+ gpio->dat = MV_GPIO_DAT;
+ gpio->odr = MV_GPIO_ODE;
+ if (load_fpga)
+ gpio->dir = MV_GPIO_OUT;
+ else
+ gpio->dir = MV_GPIO_OUT & ~(FPGA_DIN|FPGA_CCLK);
+
+ printf("SICRH / SICRL : 0x%08x / 0x%08x\n", immr->sysconf.sicrh,
+ immr->sysconf.sicrl);
+
+ mvblm7_init_fpga();
+ if (load_fpga)
+ mvblm7_load_fpga();
+
+ /* Enable PCI_CLK_OUTPUTs 0 and 1 with 1:1 clocking */
+ clk->occr = 0xc0000000;
+
+ pci_ctrl[0].gcr = 0;
+ udelay(2000);
+ pci_ctrl[0].gcr = 1;
+
+ for (i = 0; i < 1000; ++i)
+ udelay(1000);
+
+ pci_law[0].bar = CFG_PCI1_MEM_PHYS & LAWBAR_BAR;
+ pci_law[0].ar = LBLAWAR_EN | LBLAWAR_1GB;
+
+ pci_law[1].bar = CFG_PCI1_IO_PHYS & LAWBAR_BAR;
+ pci_law[1].ar = LBLAWAR_EN | LBLAWAR_1MB;
+
+ warmboot = gd->bd->bi_bootflags & BOOTFLAG_WARM;
+
+ mpc83xx_pci_init(1, reg, warmboot);
+}