Move arch/ppc to arch/powerpc

As discussed on the list, move "arch/ppc" to "arch/powerpc" to
better match the Linux directory structure.

Please note that this patch also changes the "ppc" target in
MAKEALL to "powerpc" to match this new infrastructure. But "ppc"
is kept as an alias for now, to not break compatibility with
scripts using this name.

Signed-off-by: Stefan Roese <sr@denx.de>
Acked-by: Wolfgang Denk <wd@denx.de>
Acked-by: Detlev Zundel <dzu@denx.de>
Acked-by: Kim Phillips <kim.phillips@freescale.com>
Cc: Peter Tyser <ptyser@xes-inc.com>
Cc: Anatolij Gustschin <agust@denx.de>

1 files changed, 227 insertions, 0 deletions

diff --git a/arch/powerpc/cpu/mpc512x/pci.c b/arch/powerpc/cpu/mpc512x/pci.c
new file mode 100644
index 0000000..141db8b
--- /dev/null
+++ b/arch/powerpc/cpu/mpc512x/pci.c
@@ -0,0 +1,227 @@
+/*
+ * Copyright (C) 2009-2010 DENX Software Engineering <wd@denx.de>
+ * Copyright (C) Freescale Semiconductor, Inc. 2006, 2007.
+ *
+ * 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>
+
+#include <asm/io.h>
+#include <asm/mmu.h>
+#include <asm/global_data.h>
+#include <pci.h>
+#if defined(CONFIG_OF_LIBFDT)
+#include <libfdt.h>
+#include <fdt_support.h>
+#endif
+
+DECLARE_GLOBAL_DATA_PTR;
+
+/* System RAM mapped to PCI space */
+#define CONFIG_PCI_SYS_MEM_BUS	CONFIG_SYS_SDRAM_BASE
+#define CONFIG_PCI_SYS_MEM_PHYS	CONFIG_SYS_SDRAM_BASE
+
+static struct pci_controller pci_hose;
+
+
+/**************************************************************************
+ * pci_init_board()
+ *
+ */
+void
+pci_init_board(void)
+{
+	volatile immap_t *im = (immap_t *) CONFIG_SYS_IMMR;
+	volatile law512x_t *pci_law;
+	volatile pot512x_t *pci_pot;
+	volatile pcictrl512x_t *pci_ctrl;
+	volatile pciconf512x_t *pci_conf;
+	u16 reg16;
+	u32 reg32;
+	u32 dev;
+	int i;
+	struct pci_controller *hose;
+
+	/* Set PCI divider for 33MHz */
+	reg32 = in_be32(&im->clk.scfr[0]);
+	reg32 &= ~(SCFR1_PCI_DIV_MASK);
+	reg32 |= SCFR1_PCI_DIV << SCFR1_PCI_DIV_SHIFT;
+	out_be32(&im->clk.scfr[0], reg32);
+
+	clrsetbits_be32(&im->clk.scfr[0],
+			SCFR1_PCI_DIV_MASK,
+			SCFR1_PCI_DIV << SCFR1_PCI_DIV_SHIFT
+	);
+
+	pci_law = im->sysconf.pcilaw;
+	pci_pot = im->ios.pot;
+	pci_ctrl = &im->pci_ctrl;
+	pci_conf = &im->pci_conf;
+
+	hose = &pci_hose;
+
+	/*
+	 * Release PCI RST Output signal
+	 */
+	out_be32(&pci_ctrl->gcr, 0);
+	udelay(2000);
+	out_be32(&pci_ctrl->gcr, 1);
+
+	/* We need to wait at least a 1sec based on PCI specs */
+	for (i = 0; i < 1000; i++)
+		udelay(1000);
+
+	/*
+	 * Configure PCI Local Access Windows
+	 */
+	out_be32(&pci_law[0].bar, CONFIG_SYS_PCI_MEM_PHYS & LAWBAR_BAR);
+	out_be32(&pci_law[0].ar, LAWAR_EN | LAWAR_SIZE_512M);
+
+	out_be32(&pci_law[1].bar, CONFIG_SYS_PCI_IO_PHYS & LAWBAR_BAR);
+	out_be32(&pci_law[1].ar, LAWAR_EN | LAWAR_SIZE_16M);
+
+	/*
+	 * Configure PCI Outbound Translation Windows
+	 */
+
+	/* PCI mem space - prefetch */
+	out_be32(&pci_pot[0].potar,
+		(CONFIG_SYS_PCI_MEM_BASE >> 12) & POTAR_TA_MASK);
+	out_be32(&pci_pot[0].pobar,
+		(CONFIG_SYS_PCI_MEM_PHYS >> 12) & POBAR_BA_MASK);
+	out_be32(&pci_pot[0].pocmr,
+		POCMR_EN | POCMR_PRE | POCMR_CM_256M);
+
+	/* PCI IO space */
+	out_be32(&pci_pot[1].potar,
+		(CONFIG_SYS_PCI_IO_BASE >> 12) & POTAR_TA_MASK);
+	out_be32(&pci_pot[1].pobar,
+		(CONFIG_SYS_PCI_IO_PHYS >> 12) & POBAR_BA_MASK);
+	out_be32(&pci_pot[1].pocmr,
+		POCMR_EN | POCMR_IO | POCMR_CM_16M);
+
+	/* PCI mmio - non-prefetch mem space */
+	out_be32(&pci_pot[2].potar,
+		(CONFIG_SYS_PCI_MMIO_BASE >> 12) & POTAR_TA_MASK);
+	out_be32(&pci_pot[2].pobar,
+		(CONFIG_SYS_PCI_MMIO_PHYS >> 12) & POBAR_BA_MASK);
+	out_be32(&pci_pot[2].pocmr,
+		POCMR_EN | POCMR_CM_256M);
+
+	/*
+	 * Configure PCI Inbound Translation Windows
+	 */
+
+	/* we need RAM mapped to PCI space for the devices to
+	 * access main memory */
+	out_be32(&pci_ctrl[0].pitar1, 0x0);
+	out_be32(&pci_ctrl[0].pibar1, 0x0);
+	out_be32(&pci_ctrl[0].piebar1, 0x0);
+	out_be32(&pci_ctrl[0].piwar1,
+		PIWAR_EN | PIWAR_PF | PIWAR_RTT_SNOOP |
+		PIWAR_WTT_SNOOP | (__ilog2(gd->ram_size) - 1));
+
+	hose->first_busno = 0;
+	hose->last_busno = 0xff;
+
+	/* PCI memory prefetch space */
+	pci_set_region(hose->regions + 0,
+		       CONFIG_SYS_PCI_MEM_BASE,
+		       CONFIG_SYS_PCI_MEM_PHYS,
+		       CONFIG_SYS_PCI_MEM_SIZE,
+		       PCI_REGION_MEM|PCI_REGION_PREFETCH);
+
+	/* PCI memory space */
+	pci_set_region(hose->regions + 1,
+		       CONFIG_SYS_PCI_MMIO_BASE,
+		       CONFIG_SYS_PCI_MMIO_PHYS,
+		       CONFIG_SYS_PCI_MMIO_SIZE,
+		       PCI_REGION_MEM);
+
+	/* PCI IO space */
+	pci_set_region(hose->regions + 2,
+		       CONFIG_SYS_PCI_IO_BASE,
+		       CONFIG_SYS_PCI_IO_PHYS,
+		       CONFIG_SYS_PCI_IO_SIZE,
+		       PCI_REGION_IO);
+
+	/* System memory space */
+	pci_set_region(hose->regions + 3,
+		       CONFIG_PCI_SYS_MEM_BUS,
+		       CONFIG_PCI_SYS_MEM_PHYS,
+		       gd->ram_size,
+		       PCI_REGION_MEM | PCI_REGION_SYS_MEMORY);
+
+	hose->region_count = 4;
+
+	pci_setup_indirect(hose,
+			   (CONFIG_SYS_IMMR + 0x8300),
+			   (CONFIG_SYS_IMMR + 0x8304));
+
+	pci_register_hose(hose);
+
+	/*
+	 * Write to Command register
+	 */
+	reg16 = 0xff;
+	dev = PCI_BDF(hose->first_busno, 0, 0);
+	pci_hose_read_config_word(hose, dev, PCI_COMMAND, &reg16);
+	reg16 |= PCI_COMMAND_SERR | PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY;
+	pci_hose_write_config_word(hose, dev, PCI_COMMAND, reg16);
+
+	/*
+	 * Clear non-reserved bits in status register.
+	 */
+	pci_hose_write_config_word(hose, dev, PCI_STATUS, 0xffff);
+	pci_hose_write_config_byte(hose, dev, PCI_LATENCY_TIMER, 0x80);
+	pci_hose_write_config_byte(hose, dev, PCI_CACHE_LINE_SIZE, 0x08);
+
+#ifdef CONFIG_PCI_SCAN_SHOW
+	printf("PCI:   Bus Dev VenId DevId Class Int\n");
+#endif
+	/*
+	 * Hose scan.
+	 */
+	hose->last_busno = pci_hose_scan(hose);
+}
+
+#if defined(CONFIG_OF_LIBFDT)
+void ft_pci_setup(void *blob, bd_t *bd)
+{
+	int nodeoffset;
+	int tmp[2];
+	const char *path;
+
+	nodeoffset = fdt_path_offset(blob, "/aliases");
+	if (nodeoffset >= 0) {
+		path = fdt_getprop(blob, nodeoffset, "pci", NULL);
+		if (path) {
+			tmp[0] = cpu_to_be32(pci_hose.first_busno);
+			tmp[1] = cpu_to_be32(pci_hose.last_busno);
+			do_fixup_by_path(blob, path, "bus-range",
+				&tmp, sizeof(tmp), 1);
+
+			tmp[0] = cpu_to_be32(gd->pci_clk);
+			do_fixup_by_path(blob, path, "clock-frequency",
+				&tmp, sizeof(tmp[0]), 1);
+		}
+	}
+}
+#endif /* CONFIG_OF_LIBFDT */