[RFC 1/3] MPC8544DS Basic Port
Jon Loeliger
jdl at freescale.com
Thu Mar 8 08:14:18 EST 2007
arch/powerpc/platforms/85xx/Kconfig | 18 +
arch/powerpc/platforms/85xx/Makefile | 1
arch/powerpc/platforms/85xx/mpc8544_ds.c | 424 ++++++++++++++++++++++++++++++
3 files changed, 442 insertions(+), 1 deletions(-)
diff --git a/arch/powerpc/platforms/85xx/Kconfig b/arch/powerpc/platforms/85xx/Kconfig
index eb661cc..5221664 100644
--- a/arch/powerpc/platforms/85xx/Kconfig
+++ b/arch/powerpc/platforms/85xx/Kconfig
@@ -20,6 +20,8 @@ config MPC8560_ADS
config MPC85xx_CDS
bool "Freescale MPC85xx CDS"
select DEFAULT_UIMAGE
+ select FSL_PCIE
+ select PPC_I8259
help
This option enables support for the MPC85xx CDS board
@@ -30,6 +32,14 @@ config MPC85xx_MDS
help
This option enables support for the MPC85xx MDS board
+config MPC8544_DS
+ bool "Freescale MPC8544/MPC8533 DS"
+ select PPC_I8259
+ select DEFAULT_UIMAGE
+ select FSL_PCIE
+ help
+ This option enables support for the MPC8544/MPC8533 DS board
+
endchoice
config MPC8540
@@ -43,11 +53,17 @@ config MPC8560
select PPC_INDIRECT_PCI
default y if MPC8560_ADS
+config MPC8544
+ bool
+ select SERIAL_8250_SHARE_IRQ
+ default y if MPC8544_DS
+
config MPC85xx
bool
select PPC_UDBG_16550
select PPC_INDIRECT_PCI
- default y if MPC8540_ADS || MPC85xx_CDS || MPC8560_ADS || MPC85xx_MDS
+ default y if MPC8540_ADS || MPC85xx_CDS || MPC8560_ADS \
+ || MPC85xx_MDS || MPC8544_DS
config PPC_INDIRECT_PCI_BE
bool
diff --git a/arch/powerpc/platforms/85xx/Makefile b/arch/powerpc/platforms/85xx/Makefile
index 4e63917..4e02cbb 100644
--- a/arch/powerpc/platforms/85xx/Makefile
+++ b/arch/powerpc/platforms/85xx/Makefile
@@ -5,4 +5,5 @@ obj-$(CONFIG_PPC_85xx) += misc.o pci.o
obj-$(CONFIG_MPC8540_ADS) += mpc85xx_ads.o
obj-$(CONFIG_MPC8560_ADS) += mpc85xx_ads.o
obj-$(CONFIG_MPC85xx_CDS) += mpc85xx_cds.o
+obj-$(CONFIG_MPC8544_DS) += mpc8544_ds.o
obj-$(CONFIG_MPC85xx_MDS) += mpc85xx_mds.o
diff --git a/arch/powerpc/platforms/85xx/mpc8544_ds.c b/arch/powerpc/platforms/85xx/mpc8544_ds.c
new file mode 100644
index 0000000..035a762
--- /dev/null
+++ b/arch/powerpc/platforms/85xx/mpc8544_ds.c
@@ -0,0 +1,424 @@
+/*
+ * MPC8544 DS Board Setup
+ *
+ * Author Xianghua Xiao (x.xiao at freescale.com)
+ * Copyright 2007 Freescale Semiconductor Inc.
+ *
+ * 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.
+ */
+
+#include <linux/stddef.h>
+#include <linux/kernel.h>
+#include <linux/pci.h>
+#include <linux/kdev_t.h>
+#include <linux/delay.h>
+#include <linux/seq_file.h>
+
+#include <asm/system.h>
+#include <asm/time.h>
+#include <asm/machdep.h>
+#include <asm/pci-bridge.h>
+#include <asm/mpc85xx.h>
+#include <mm/mmu_decl.h>
+#include <asm/prom.h>
+#include <asm/udbg.h>
+#include <asm/mpic.h>
+#include <asm/i8259.h>
+
+#include <sysdev/fsl_soc.h>
+#include "mpc85xx.h"
+
+#undef DEBUG
+
+#ifdef DEBUG
+#define DBG(fmt, args...) printk(KERN_ERR "%s: " fmt, __FUNCTION__, ## args)
+#else
+#define DBG(fmt, args...)
+#endif
+
+#ifndef CONFIG_PCI
+unsigned long isa_io_base = 0;
+unsigned long isa_mem_base = 0;
+unsigned long pci_dram_offset = 0;
+#endif
+
+#ifdef CONFIG_PCI
+int mpc85xx_exclude_device(u_char bus, u_char devfn)
+{
+ if (bus == 2 && PCI_SLOT(devfn) == 0x1d)
+ return PCIBIOS_DEVICE_NOT_FOUND;
+ else
+ return PCIBIOS_SUCCESSFUL;
+}
+
+static void mpc8544_8259_cascade(unsigned int irq, struct irq_desc *desc)
+{
+ unsigned int cascade_irq = i8259_irq();
+ if (cascade_irq != NO_IRQ)
+ generic_handle_irq(cascade_irq);
+ desc->chip->eoi(irq);
+}
+#endif /* CONFIG_PCI */
+
+void __init mpc8544_ds_pic_init(void)
+{
+ struct mpic *mpic;
+ struct resource r;
+ struct device_node *np = NULL;
+#ifdef CONFIG_PPC_I8259
+ struct device_node *cascade_node = NULL;
+ int cascade_irq;
+#endif
+
+ np = of_find_node_by_type(np, "open-pic");
+
+ if (np == NULL) {
+ printk(KERN_ERR "Could not find open-pic node\n");
+ return;
+ }
+
+ if (of_address_to_resource(np, 0, &r)) {
+ printk(KERN_ERR "Failed to map mpic register space\n");
+ of_node_put(np);
+ return;
+ }
+
+ /* Alloc mpic structure and per isu has 16 INT entries. */
+ mpic = mpic_alloc(np, r.start,
+ MPIC_PRIMARY | MPIC_WANTS_RESET | MPIC_BIG_ENDIAN,
+ 16, NR_IRQS - 10, " OPENPIC ");
+ BUG_ON(mpic == NULL);
+
+ /* Return the mpic node */
+
+ mpic_assign_isu(mpic, 0, r.start + 0x10000);
+
+ /* 48 Internal Interrupts */
+ mpic_assign_isu(mpic, 1, r.start + 0x10200);
+ mpic_assign_isu(mpic, 2, r.start + 0x10400);
+ mpic_assign_isu(mpic, 3, r.start + 0x10600);
+
+ /* 16 External interrupts
+ * Moving them from [0 - 15] to [64 - 79]
+ */
+ mpic_assign_isu(mpic, 4, r.start + 0x10000);
+
+ mpic_init(mpic);
+
+#ifdef CONFIG_PPC_I8259
+ /* Initialize the i8259 controller */
+ for_each_node_by_type(np, "interrupt-controller")
+ if (device_is_compatible(np, "chrp,iic")) {
+ cascade_node = np;
+ break;
+ }
+
+ if (cascade_node == NULL) {
+ printk(KERN_DEBUG "Could not find i8259 PIC\n");
+ return;
+ }
+
+ cascade_irq = irq_of_parse_and_map(cascade_node, 0);
+ if (cascade_irq == NO_IRQ) {
+ printk(KERN_ERR "Failed to map cascade interrupt\n");
+ return;
+ }
+
+ DBG("mpc8544ds: cascade mapped to irq %d\n", cascade_irq);
+
+ i8259_init(cascade_node, 0);
+ of_node_put(cascade_node);
+
+ set_irq_chained_handler(cascade_irq, mpc8544_8259_cascade);
+#endif /* CONFIG_PPC_I8259 */
+}
+
+#ifdef CONFIG_PCI
+enum pirq { PIRQA = 8, PIRQB, PIRQC, PIRQD, PIRQE, PIRQF, PIRQG, PIRQH };
+const unsigned char uli1575_irq_route_table[16] = {
+/* Value in table -- IRQ number */
+ 0, /* 0: Reserved */
+ 0x8, /* 1: 0b1000 */
+ 0, /* 2: Reserved */
+ 0x2, /* 3: 0b0010 */
+ 0x4, /* 4: 0b0100 */
+ 0x5, /* 5: 0b0101 */
+ 0x7, /* 6: 0b0111 */
+ 0x6, /* 7: 0b0110 */
+ 0, /* 8: Reserved */
+ 0x1, /* 9: 0b0001 */
+ 0x3, /* 10: 0b0011 */
+ 0x9, /* 11: 0b1001 */
+ 0xb, /* 12: 0b1011 */
+ 0, /* 13: Reserved */
+ 0xd, /* 14, 0b1101 */
+ 0xf, /* 15, 0b1111 */
+};
+
+static int __devinit
+get_pci_irq_from_of(struct pci_controller *hose, int slot, int pin)
+{
+ struct of_irq oirq;
+ u32 laddr[3];
+ struct device_node *hosenode = hose ? hose->arch_data : NULL;
+
+ if (!hosenode)
+ return -EINVAL;
+
+ laddr[0] = (hose->first_busno << 16) | (PCI_DEVFN(slot, 0) << 8);
+ laddr[1] = laddr[2] = 0;
+ of_irq_map_raw(hosenode, &pin, 1, laddr, &oirq);
+ DBG("mpc8544_ds: pci irq addr %x, slot %d, pin %d, irq %d\n",
+ laddr[0], slot, pin, oirq.specifier[0]);
+ return oirq.specifier[0];
+}
+
+/*8259*/
+static void __devinit quirk_uli1575(struct pci_dev *dev)
+{
+ unsigned short temp;
+ struct pci_controller *hose = pci_bus_to_host(dev->bus);
+ unsigned char irq2pin[16];
+ unsigned long pirq_map_word = 0;
+ u32 irq;
+ int i;
+
+ /*
+ * ULI1575 interrupts route setup
+ */
+ memset(irq2pin, 0, 16); /* Initialize default value 0 */
+
+ /*
+ * PIRQE -> PIRQF mapping set manually
+ *
+ * IRQ pin IRQ#
+ * PIRQE ---- 9
+ * PIRQF ---- 10
+ * PIRQG ---- 11
+ * PIRQH ---- 12
+ */
+ for (i = 0; i < 4; i++)
+ irq2pin[i + 9] = PIRQE + i;
+
+ /* Set IRQ-PIRQ Mapping to ULI1575 */
+ for (i = 0; i < 16; i++)
+ if (irq2pin[i])
+ pirq_map_word |= (uli1575_irq_route_table[i] & 0xf)
+ << ((irq2pin[i] - PIRQA) * 4);
+
+ /* ULI1575 IRQ mapping conf register default value is 0xb9317542 */
+ DBG("Setup ULI1575 IRQ mapping configuration register value = 0x%x\n",
+ pirq_map_word);
+ pci_write_config_dword(dev, 0x48, pirq_map_word);
+
+#define ULI1575_SET_DEV_IRQ(slot, pin, reg) \
+ do { \
+ int irq; \
+ irq = get_pci_irq_from_of(hose, slot, pin); \
+ if (irq > 0 && irq < 16) { \
+ pci_write_config_byte(dev, reg, irq2pin[irq]); \
+ } \
+ else \
+ printk(KERN_WARNING "ULI1575 device" \
+ "(slot %d, pin %d) irq %d is invalid.\n", \
+ slot, pin, irq); \
+ } while(0)
+
+ /* USB 1.1 OHCI controller 1, slot 28, pin 1 */
+ ULI1575_SET_DEV_IRQ(28, 1, 0x86);
+
+ /* USB 1.1 OHCI controller 2, slot 28, pin 2 */
+ ULI1575_SET_DEV_IRQ(28, 2, 0x87);
+
+ /* USB 1.1 OHCI controller 3, slot 28, pin 3 */
+ ULI1575_SET_DEV_IRQ(28, 3, 0x88);
+
+ /* USB 2.0 controller, slot 28, pin 4 */
+ irq = get_pci_irq_from_of(hose, 28, 4);
+ if (irq >= 0 && irq <= 15)
+ pci_write_config_dword(dev, 0x74, uli1575_irq_route_table[irq]);
+
+ /* Audio controller, slot 29, pin 1 */
+ ULI1575_SET_DEV_IRQ(29, 1, 0x8a);
+
+ /* Modem controller, slot 29, pin 2 */
+ ULI1575_SET_DEV_IRQ(29, 2, 0x8b);
+
+ /* HD audio controller, slot 29, pin 3 */
+ ULI1575_SET_DEV_IRQ(29, 3, 0x8c);
+
+ /* SMB interrupt: slot 30, pin 1 */
+ ULI1575_SET_DEV_IRQ(30, 1, 0x8e);
+
+ /* PMU ACPI SCI interrupt: slot 30, pin 2 */
+ ULI1575_SET_DEV_IRQ(30, 2, 0x8f);
+
+ /* Serial ATA interrupt: slot 31, pin 1 */
+ ULI1575_SET_DEV_IRQ(31, 1, 0x8d);
+
+ /* Primary PATA IDE IRQ: 14
+ * Secondary PATA IDE IRQ: 15
+ */
+ pci_write_config_byte(dev, 0x44, 0x30 | uli1575_irq_route_table[14]);
+ pci_write_config_byte(dev, 0x75, uli1575_irq_route_table[15]);
+
+ /* Set IRQ14 and IRQ15 to legacy IRQs */
+ pci_read_config_word(dev, 0x46, &temp);
+ temp |= 0xc000;
+ pci_write_config_word(dev, 0x46, temp);
+
+ /* Set i8259 interrupt trigger
+ * IRQ 3: Level
+ * IRQ 4: Level
+ * IRQ 5: Level
+ * IRQ 6: Level
+ * IRQ 7: Level
+ * IRQ 9: Level
+ * IRQ 10: Level
+ * IRQ 11: Level
+ * IRQ 12: Level
+ * IRQ 14: Edge
+ * IRQ 15: Edge
+ */
+ outb(0xfa, 0x4d0);
+ outb(0x1e, 0x4d1);
+
+#undef ULI1575_SET_DEV_IRQ
+}
+
+/* SATA */
+static void __devinit quirk_uli5288(struct pci_dev *dev)
+{
+ unsigned char c;
+
+ pci_read_config_byte(dev, 0x83, &c);
+ c |= 0x80; /* read/write lock */
+ pci_write_config_byte(dev, 0x83, c);
+
+ pci_write_config_byte(dev, 0x09, 0x01); /* Base class code: storage */
+ pci_write_config_byte(dev, 0x0a, 0x06); /* IDE disk */
+
+ pci_read_config_byte(dev, 0x83, &c);
+ c &= 0x7f;
+ pci_write_config_byte(dev, 0x83, c);
+
+ pci_read_config_byte(dev, 0x84, &c);
+ c |= 0x01; /* emulated PATA mode enabled */
+ pci_write_config_byte(dev, 0x84, c);
+}
+
+/* PATA */
+static void __devinit quirk_uli5229(struct pci_dev *dev)
+{
+ unsigned short temp;
+ pci_write_config_word(dev, 0x04, 0x0405); /* MEM IO MSI */
+ pci_write_config_byte(dev, 0x09, 0x8a);
+ dev->class &= ~0x5;
+ pci_read_config_word(dev, 0x4a, &temp);
+ temp |= 0x1000; /* Enable Native IRQ 14/15 */
+ pci_write_config_word(dev, 0x4a, temp);
+}
+
+/*Bridge*/
+static void __devinit early_uli5249(struct pci_dev *dev)
+{
+ unsigned char temp;
+ pci_write_config_word(dev, 0x04, 0x0007); /* mem access */
+ pci_read_config_byte(dev, 0x7c, &temp);
+ pci_write_config_byte(dev, 0x7c, 0x80); /* R/W lock control */
+ pci_write_config_byte(dev, 0x09, 0x01); /* set as pci-pci bridge */
+ pci_write_config_byte(dev, 0x7c, temp); /* restore pci bus debug control */
+ dev->class |= 0x1;
+}
+
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AL, 0x1575, quirk_uli1575);
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AL, 0x5288, quirk_uli5288);
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AL, 0x5229, quirk_uli5229);
+DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_AL, 0x5249, early_uli5249);
+#endif /* CONFIG_PCI */
+
+/*
+ * Setup the architecture
+ */
+static void __init mpc8544_ds_setup_arch(void)
+{
+#ifdef CONFIG_PCI
+ struct device_node *np;
+#endif
+
+ if (ppc_md.progress)
+ ppc_md.progress("mpc8544_ds_setup_arch()", 0);
+
+#ifdef CONFIG_PCI
+ for (np = NULL; (np = of_find_node_by_type(np, "pci")) != NULL;)
+ add_bridge(np);
+ ppc_md.pci_exclude_device = mpc85xx_exclude_device;
+#endif
+
+ printk("MPC8544 DS board from Freescale Semiconductor\n");
+}
+
+void __init mpc8544_ds_pcibios_fixup_bus(struct pci_bus *bus)
+{
+ if (bus->self && bus->self->vendor == 0x10b9
+ && bus->self->device == 0x5249) {
+ bus->parent->resource[0]->end = bus->parent->resource[0]->start
+ + 0xffff;
+ if (bus->resource[1] && bus->parent->resource[1])
+ bus->parent->resource[1]->end +=
+ bus->resource[1]->end + 1 + 0x100000
+ - bus->resource[1]->start;
+ }
+}
+
+void mpc8544_ds_show_cpuinfo(struct seq_file *m)
+{
+ struct device_node *root;
+ uint memsize = total_memory;
+ const char *model = "";
+ uint svid = mfspr(SPRN_SVR);
+
+ seq_printf(m, "Vendor\t\t: Freescale Semiconductor\n");
+
+ root = of_find_node_by_path("/");
+ if (root)
+ model = get_property(root, "model", NULL);
+ seq_printf(m, "Machine\t\t: %s\n", model);
+ of_node_put(root);
+
+ seq_printf(m, "SVR\t\t: 0x%x\n", svid);
+ seq_printf(m, "Memory\t\t: %d MB\n", memsize / (1024 * 1024));
+}
+
+/*
+ * Called very early, device-tree isn't unflattened
+ */
+static int __init mpc8544_ds_probe(void)
+{
+ char *model = of_get_flat_dt_prop(of_get_flat_dt_root(),
+ "model", NULL);
+ if (model == NULL)
+ return 0;
+ if (strcmp(model, "MPC8544DS"))
+ return 0;
+
+ DBG("MPC8544DS found\n");
+
+ return 1;
+}
+
+define_machine(mpc8544_ds) {
+ .name = "MPC8544 DS",
+ .probe = mpc8544_ds_probe,
+ .setup_arch = mpc8544_ds_setup_arch,
+ .init_IRQ = mpc8544_ds_pic_init,
+ .show_cpuinfo = mpc8544_ds_show_cpuinfo,
+ .pcibios_fixup_bus = mpc8544_ds_pcibios_fixup_bus,
+ .get_irq = mpic_get_irq,
+ .restart = mpc85xx_restart,
+ .calibrate_decr = generic_calibrate_decr,
+ .progress = udbg_progress,
+};
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