[POWERPC] 85xx: Add support for Wind River SBC8560 in arch/powerpc

This adds support for the Wind River SBC8560 board, implemented as
powerpc.  It closely follows the implementation of the MPC8560ADS.

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>

3 files changed, 295 insertions, 2 deletions

diff --git a/arch/powerpc/platforms/85xx/Kconfig b/arch/powerpc/platforms/85xx/Kconfig
index 7896f0686bca..06ccb64293e2 100644
--- a/arch/powerpc/platforms/85xx/Kconfig
+++ b/arch/powerpc/platforms/85xx/Kconfig
@@ -81,6 +81,13 @@ config TQM8560
         select TQM85xx
         select CPM2
 
+config SBC8560
+        bool "Wind River SBC8560"
+        select DEFAULT_UIMAGE
+        select PPC_CPM_NEW_BINDING
+        help
+          This option enables support for the Wind River SBC8560 board
+
 endchoice
 
 config TQM85xx
@@ -96,7 +103,7 @@ config MPC8540
 config MPC8560
         bool
         select CPM2
-        default y if MPC8560_ADS || STX_GP3
+        default y if MPC8560_ADS || STX_GP3 || SBC8560
 
 config MPC85xx
         bool
@@ -106,4 +113,4 @@ config MPC85xx
         select FSL_PCI if PCI
         select SERIAL_8250_SHARE_IRQ if SERIAL_8250
         default y if MPC8540_ADS || MPC85xx_CDS || MPC8560_ADS \
-                || MPC85xx_MDS || MPC85xx_DS || STX_GP3
+                || MPC85xx_MDS || MPC85xx_DS || STX_GP3 || SBC8560
diff --git a/arch/powerpc/platforms/85xx/Makefile b/arch/powerpc/platforms/85xx/Makefile
index 8c761d1671a1..698f9f950504 100644
--- a/arch/powerpc/platforms/85xx/Makefile
+++ b/arch/powerpc/platforms/85xx/Makefile
@@ -8,3 +8,4 @@ obj-$(CONFIG_MPC85xx_DS)  += mpc85xx_ds.o
 obj-$(CONFIG_MPC85xx_MDS) += mpc85xx_mds.o
 obj-$(CONFIG_STX_GP3)     += stx_gp3.o
 obj-$(CONFIG_TQM85xx)     += tqm85xx.o
+obj-$(CONFIG_SBC8560)     += sbc8560.o
diff --git a/arch/powerpc/platforms/85xx/sbc8560.c b/arch/powerpc/platforms/85xx/sbc8560.c
new file mode 100644
index 000000000000..e2bc368b38d9
--- /dev/null
+++ b/arch/powerpc/platforms/85xx/sbc8560.c
@@ -0,0 +1,285 @@
+/*
+ * Wind River SBC8560 setup and early boot code.
+ *
+ * Copyright 2007 Wind River Systems Inc.
+ *
+ * By Paul Gortmaker (see MAINTAINERS for contact information)
+ *
+ * Based largely on the MPC8560ADS support - Copyright 2005 Freescale 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 <linux/of_platform.h>
+
+#include <asm/system.h>
+#include <asm/time.h>
+#include <asm/machdep.h>
+#include <asm/pci-bridge.h>
+#include <asm/mpic.h>
+#include <mm/mmu_decl.h>
+#include <asm/udbg.h>
+
+#include <sysdev/fsl_soc.h>
+#include <sysdev/fsl_pci.h>
+
+#ifdef CONFIG_CPM2
+#include <asm/cpm2.h>
+#include <sysdev/cpm2_pic.h>
+#endif
+
+#ifdef CONFIG_CPM2
+
+static void cpm2_cascade(unsigned int irq, struct irq_desc *desc)
+{
+        int cascade_irq;
+
+        while ((cascade_irq = cpm2_get_irq()) >= 0)
+                generic_handle_irq(cascade_irq);
+
+        desc->chip->eoi(irq);
+}
+
+#endif /* CONFIG_CPM2 */
+
+static void __init sbc8560_pic_init(void)
+{
+        struct mpic *mpic;
+        struct resource r;
+        struct device_node *np = NULL;
+#ifdef CONFIG_CPM2
+        int irq;
+#endif
+
+        np = of_find_node_by_type(np, "open-pic");
+        if (!np) {
+                printk(KERN_ERR "Could not find open-pic node\n");
+                return;
+        }
+
+        if (of_address_to_resource(np, 0, &r)) {
+                printk(KERN_ERR "Could not map mpic register space\n");
+                of_node_put(np);
+                return;
+        }
+
+        mpic = mpic_alloc(np, r.start,
+                        MPIC_PRIMARY | MPIC_WANTS_RESET | MPIC_BIG_ENDIAN,
+                        0, 256, " OpenPIC  ");
+        BUG_ON(mpic == NULL);
+        of_node_put(np);
+
+        mpic_init(mpic);
+
+#ifdef CONFIG_CPM2
+        /* Setup CPM2 PIC */
+        np = of_find_compatible_node(NULL, NULL, "fsl,cpm2-pic");
+        if (np == NULL) {
+                printk(KERN_ERR "PIC init: can not find fsl,cpm2-pic node\n");
+                return;
+        }
+        irq = irq_of_parse_and_map(np, 0);
+
+        cpm2_pic_init(np);
+        of_node_put(np);
+        set_irq_chained_handler(irq, cpm2_cascade);
+#endif
+}
+
+/*
+ * Setup the architecture
+ */
+#ifdef CONFIG_CPM2
+struct cpm_pin {
+        int port, pin, flags;
+};
+
+static const struct cpm_pin sbc8560_pins[] = {
+        /* SCC1 */
+        {3, 29, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
+        {3, 30, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY},
+        {3, 31, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
+
+        /* SCC2 */
+        {3, 26, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
+        {3, 27, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
+        {3, 28, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
+
+        /* FCC2 */
+        {1, 18, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
+        {1, 19, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
+        {1, 20, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
+        {1, 21, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
+        {1, 22, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
+        {1, 23, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
+        {1, 24, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
+        {1, 25, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
+        {1, 26, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
+        {1, 27, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
+        {1, 28, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
+        {1, 29, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY},
+        {1, 30, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
+        {1, 31, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
+        {2, 18, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, /* CLK14 */
+        {2, 19, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, /* CLK13 */
+
+        /* FCC3 */
+        {1, 4, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
+        {1, 5, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
+        {1, 6, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
+        {1, 7, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
+        {1, 8, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
+        {1, 9, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
+        {1, 10, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
+        {1, 11, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
+        {1, 12, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
+        {1, 13, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
+        {1, 14, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
+        {1, 15, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
+        {1, 16, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
+        {1, 17, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
+        {2, 16, CPM_PIN_INPUT | CPM_PIN_SECONDARY}, /* CLK16 */
+        {2, 17, CPM_PIN_INPUT | CPM_PIN_SECONDARY}, /* CLK15 */
+};
+
+static void __init init_ioports(void)
+{
+        int i;
+
+        for (i = 0; i < ARRAY_SIZE(sbc8560_pins); i++) {
+                struct cpm_pin *pin = &sbc8560_pins[i];
+                cpm2_set_pin(pin->port, pin->pin, pin->flags);
+        }
+
+        cpm2_clk_setup(CPM_CLK_SCC1, CPM_BRG1, CPM_CLK_RX);
+        cpm2_clk_setup(CPM_CLK_SCC1, CPM_BRG1, CPM_CLK_TX);
+        cpm2_clk_setup(CPM_CLK_SCC2, CPM_BRG2, CPM_CLK_RX);
+        cpm2_clk_setup(CPM_CLK_SCC2, CPM_BRG2, CPM_CLK_TX);
+        cpm2_clk_setup(CPM_CLK_FCC2, CPM_CLK13, CPM_CLK_RX);
+        cpm2_clk_setup(CPM_CLK_FCC2, CPM_CLK14, CPM_CLK_TX);
+        cpm2_clk_setup(CPM_CLK_FCC3, CPM_CLK15, CPM_CLK_RX);
+        cpm2_clk_setup(CPM_CLK_FCC3, CPM_CLK16, CPM_CLK_TX);
+}
+#endif
+
+static void __init sbc8560_setup_arch(void)
+{
+#ifdef CONFIG_PCI
+        struct device_node *np;
+#endif
+
+        if (ppc_md.progress)
+                ppc_md.progress("sbc8560_setup_arch()", 0);
+
+#ifdef CONFIG_CPM2
+        cpm2_reset();
+        init_ioports();
+#endif
+
+#ifdef CONFIG_PCI
+        for_each_compatible_node(np, "pci", "fsl,mpc8540-pci")
+                fsl_add_bridge(np, 1);
+#endif
+}
+
+static void sbc8560_show_cpuinfo(struct seq_file *m)
+{
+        uint pvid, svid, phid1;
+        uint memsize = total_memory;
+
+        pvid = mfspr(SPRN_PVR);
+        svid = mfspr(SPRN_SVR);
+
+        seq_printf(m, "Vendor\t\t: Wind River\n");
+        seq_printf(m, "Machine\t\t: SBC8560\n");
+        seq_printf(m, "PVR\t\t: 0x%x\n", pvid);
+        seq_printf(m, "SVR\t\t: 0x%x\n", svid);
+
+        /* Display cpu Pll setting */
+        phid1 = mfspr(SPRN_HID1);
+        seq_printf(m, "PLL setting\t: 0x%x\n", ((phid1 >> 24) & 0x3f));
+
+        /* Display the amount of memory */
+        seq_printf(m, "Memory\t\t: %d MB\n", memsize / (1024 * 1024));
+}
+
+static struct of_device_id __initdata of_bus_ids[] = {
+        { .name = "soc", },
+        { .type = "soc", },
+        { .name = "cpm", },
+        { .name = "localbus", },
+        {},
+};
+
+static int __init declare_of_platform_devices(void)
+{
+        if (!machine_is(sbc8560))
+                return 0;
+
+        of_platform_bus_probe(NULL, of_bus_ids, NULL);
+        return 0;
+}
+device_initcall(declare_of_platform_devices);
+
+/*
+ * Called very early, device-tree isn't unflattened
+ */
+static int __init sbc8560_probe(void)
+{
+        unsigned long root = of_get_flat_dt_root();
+
+        return of_flat_dt_is_compatible(root, "SBC8560");
+}
+
+#ifdef CONFIG_RTC_DRV_M48T59
+static int __init sbc8560_rtc_init(void)
+{
+        struct device_node *np;
+        struct resource res;
+        struct platform_device *rtc_dev;
+
+        np = of_find_compatible_node(NULL, NULL, "m48t59");
+        if (np == NULL) {
+                printk("No RTC in DTB. Has it been eaten by wild dogs?\n");
+                return -ENODEV;
+        }
+
+        of_address_to_resource(np, 0, &res);
+        of_node_put(np);
+
+        printk("Found RTC (m48t59) at i/o 0x%x\n", res.start);
+
+        rtc_dev = platform_device_register_simple("rtc-m48t59", 0, &res, 1);
+
+        if (IS_ERR(rtc_dev)) {
+                printk("Registering sbc8560 RTC device failed\n");
+                return PTR_ERR(rtc_dev);
+        }
+
+        return 0;
+}
+
+arch_initcall(sbc8560_rtc_init);
+
+#endif  /* M48T59 */
+
+define_machine(sbc8560) {
+        .name                   = "SBC8560",
+        .probe                  = sbc8560_probe,
+        .setup_arch             = sbc8560_setup_arch,
+        .init_IRQ               = sbc8560_pic_init,
+        .show_cpuinfo           = sbc8560_show_cpuinfo,
+        .get_irq                = mpic_get_irq,
+        .restart                = fsl_rstcr_restart,
+        .calibrate_decr         = generic_calibrate_decr,
+        .progress               = udbg_progress,
+};