[PATCH] ppc32: Add TQM85xx (8540/8541/8555/8560) board support

This patch adds support for the TQ Components TQM85xx modules. Currently the
modules TQM8540/8541/8555/8560 are supported.

Signed-off-by: Stefan Roese <sr@denx.de>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>

4 files changed, 503 insertions, 4 deletions

diff --git a/arch/ppc/platforms/85xx/Kconfig b/arch/ppc/platforms/85xx/Kconfig
index c5bc2821d991..7ddd331a7145 100644
--- a/arch/ppc/platforms/85xx/Kconfig
+++ b/arch/ppc/platforms/85xx/Kconfig
@@ -39,7 +39,7 @@ config MPC8560_ADS
 config SBC8560
         bool "WindRiver PowerQUICC III SBC8560"
         help
-          This option enables support for the WindRiver PowerQUICC III 
+          This option enables support for the WindRiver PowerQUICC III
           SBC8560 board.
 
 config STX_GP3
@@ -48,6 +48,26 @@ config STX_GP3
           This option enables support for the Silicon Turnkey Express GP3
           board.
 
+config TQM8540
+        bool "TQ Components TQM8540"
+        help
+          This option enablese support for the TQ Components TQM8540 board.
+
+config TQM8541
+        bool "TQ Components TQM8541"
+        help
+          This option enablese support for the TQ Components TQM8541 board.
+
+config TQM8555
+        bool "TQ Components TQM8555"
+        help
+          This option enablese support for the TQ Components TQM8555 board.
+
+config TQM8560
+        bool "TQ Components TQM8560"
+        help
+          This option enablese support for the TQ Components TQM8560 board.
+
 endchoice
 
 # It's often necessary to know the specific 85xx processor type.
@@ -55,7 +75,7 @@ endchoice
 # don't need to ask more redundant questions.
 config MPC8540
         bool
-        depends on MPC8540_ADS
+        depends on MPC8540_ADS || TQM8540
         default y
 
 config MPC8548
@@ -65,12 +85,12 @@ config MPC8548
 
 config MPC8555
         bool
-        depends on MPC8555_CDS
+        depends on MPC8555_CDS || TQM8541 || TQM8555
         default y
 
 config MPC8560
         bool
-        depends on SBC8560 || MPC8560_ADS || STX_GP3
+        depends on SBC8560 || MPC8560_ADS || STX_GP3 || TQM8560
         default y
 
 config 85xx_PCI2
diff --git a/arch/ppc/platforms/85xx/Makefile b/arch/ppc/platforms/85xx/Makefile
index efdf813108f2..6c4753c144d3 100644
--- a/arch/ppc/platforms/85xx/Makefile
+++ b/arch/ppc/platforms/85xx/Makefile
@@ -7,3 +7,7 @@ obj-$(CONFIG_MPC8555_CDS)	+= mpc85xx_cds_common.o
 obj-$(CONFIG_MPC8560_ADS)       += mpc85xx_ads_common.o mpc8560_ads.o
 obj-$(CONFIG_SBC8560)           += sbc85xx.o sbc8560.o
 obj-$(CONFIG_STX_GP3)           += stx_gp3.o
+obj-$(CONFIG_TQM8540)           += tqm85xx.o
+obj-$(CONFIG_TQM8541)           += tqm85xx.o
+obj-$(CONFIG_TQM8555)           += tqm85xx.o
+obj-$(CONFIG_TQM8560)           += tqm85xx.o
diff --git a/arch/ppc/platforms/85xx/tqm85xx.c b/arch/ppc/platforms/85xx/tqm85xx.c
new file mode 100644
index 000000000000..c6dfd8f0f9df
--- /dev/null
+++ b/arch/ppc/platforms/85xx/tqm85xx.c
@@ -0,0 +1,419 @@
+/*
+ * arch/ppc/platforms/85xx/tqm85xx.c
+ *
+ * TQM85xx (40/41/55/60) board specific routines
+ *
+ * Copyright (c) 2005 DENX Software Engineering
+ * Stefan Roese <sr@denx.de>
+ *
+ * Based on original work by
+ *      Kumar Gala <galak@kernel.crashing.org>
+ *      Copyright 2004 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/config.h>
+#include <linux/stddef.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/errno.h>
+#include <linux/reboot.h>
+#include <linux/pci.h>
+#include <linux/kdev_t.h>
+#include <linux/major.h>
+#include <linux/console.h>
+#include <linux/delay.h>
+#include <linux/seq_file.h>
+#include <linux/root_dev.h>
+#include <linux/serial.h>
+#include <linux/tty.h>  /* for linux/serial_core.h */
+#include <linux/serial_core.h>
+#include <linux/initrd.h>
+#include <linux/module.h>
+#include <linux/fsl_devices.h>
+
+#include <asm/system.h>
+#include <asm/pgtable.h>
+#include <asm/page.h>
+#include <asm/atomic.h>
+#include <asm/time.h>
+#include <asm/io.h>
+#include <asm/machdep.h>
+#include <asm/open_pic.h>
+#include <asm/bootinfo.h>
+#include <asm/pci-bridge.h>
+#include <asm/mpc85xx.h>
+#include <asm/irq.h>
+#include <asm/immap_85xx.h>
+#include <asm/kgdb.h>
+#include <asm/ppc_sys.h>
+#include <asm/cpm2.h>
+#include <mm/mmu_decl.h>
+
+#include <syslib/ppc85xx_setup.h>
+#include <syslib/cpm2_pic.h>
+#include <syslib/ppc85xx_common.h>
+#include <syslib/ppc85xx_rio.h>
+
+#ifndef CONFIG_PCI
+unsigned long isa_io_base = 0;
+unsigned long isa_mem_base = 0;
+#endif
+
+
+extern unsigned long total_memory;      /* in mm/init */
+
+unsigned char __res[sizeof (bd_t)];
+
+/* Internal interrupts are all Level Sensitive, and Positive Polarity */
+static u_char tqm85xx_openpic_initsenses[] __initdata = {
+        MPC85XX_INTERNAL_IRQ_SENSES,
+        0x0,                                            /* External  0: */
+        0x0,                                            /* External  1: */
+#if defined(CONFIG_PCI)
+        (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE),      /* External 2: PCI INTA */
+        (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE),      /* External 3: PCI INTB */
+#else
+        0x0,                            /* External  2: */
+        0x0,                            /* External  3: */
+#endif
+        0x0,                            /* External  4: */
+        0x0,                            /* External  5: */
+        0x0,                            /* External  6: */
+        0x0,                            /* External  7: */
+        (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE),      /* External 8: PHY */
+        0x0,                            /* External  9: */
+        0x0,                            /* External 10: */
+        0x0,                            /* External 11: */
+};
+
+static const char *GFAR_PHY_0 = "phy0:2";
+static const char *GFAR_PHY_1 = "phy0:1";
+#ifdef CONFIG_MPC8540
+static const char *GFAR_PHY_3 = "phy0:3";
+#endif
+
+/* ************************************************************************
+ *
+ * Setup the architecture
+ *
+ */
+static void __init
+tqm85xx_setup_arch(void)
+{
+        bd_t *binfo = (bd_t *) __res;
+        unsigned int freq;
+        struct gianfar_platform_data *pdata;
+        struct gianfar_mdio_data *mdata;
+
+#ifdef CONFIG_MPC8560
+        cpm2_reset();
+#endif
+
+        /* get the core frequency */
+        freq = binfo->bi_intfreq;
+
+        if (ppc_md.progress)
+                ppc_md.progress("tqm85xx_setup_arch()", 0);
+
+        /* Set loops_per_jiffy to a half-way reasonable value,
+           for use until calibrate_delay gets called. */
+        loops_per_jiffy = freq / HZ;
+
+#ifdef CONFIG_PCI
+        /* setup PCI host bridges */
+        mpc85xx_setup_hose();
+#endif
+
+#ifndef CONFIG_MPC8560
+#if defined(CONFIG_SERIAL_8250)
+        mpc85xx_early_serial_map();
+#endif
+
+#ifdef CONFIG_SERIAL_TEXT_DEBUG
+        /* Invalidate the entry we stole earlier the serial ports
+         * should be properly mapped */
+        invalidate_tlbcam_entry(num_tlbcam_entries - 1);
+#endif
+#endif /* CONFIG_MPC8560 */
+
+        /* setup the board related info for the MDIO bus */
+        mdata = (struct gianfar_mdio_data *) ppc_sys_get_pdata(MPC85xx_MDIO);
+
+        mdata->irq[0] = MPC85xx_IRQ_EXT8;
+        mdata->irq[1] = MPC85xx_IRQ_EXT8;
+        mdata->irq[2] = -1;
+        mdata->irq[3] = MPC85xx_IRQ_EXT8;
+        mdata->irq[31] = -1;
+        mdata->paddr += binfo->bi_immr_base;
+
+        /* setup the board related information for the enet controllers */
+        pdata = (struct gianfar_platform_data *) ppc_sys_get_pdata(MPC85xx_TSEC1);
+        if (pdata) {
+                pdata->board_flags = FSL_GIANFAR_BRD_HAS_PHY_INTR;
+                pdata->bus_id = GFAR_PHY_0;
+                memcpy(pdata->mac_addr, binfo->bi_enetaddr, 6);
+        }
+
+        pdata = (struct gianfar_platform_data *) ppc_sys_get_pdata(MPC85xx_TSEC2);
+        if (pdata) {
+                pdata->board_flags = FSL_GIANFAR_BRD_HAS_PHY_INTR;
+                pdata->bus_id = GFAR_PHY_1;
+                memcpy(pdata->mac_addr, binfo->bi_enet1addr, 6);
+        }
+
+#ifdef CONFIG_MPC8540
+        pdata = (struct gianfar_platform_data *) ppc_sys_get_pdata(MPC85xx_FEC);
+        if (pdata) {
+                pdata->board_flags = 0;
+                pdata->bus_id = GFAR_PHY_3;
+                memcpy(pdata->mac_addr, binfo->bi_enet2addr, 6);
+        }
+#endif
+
+#ifdef CONFIG_BLK_DEV_INITRD
+        if (initrd_start)
+                ROOT_DEV = Root_RAM0;
+        else
+#endif
+#ifdef  CONFIG_ROOT_NFS
+                ROOT_DEV = Root_NFS;
+#else
+        ROOT_DEV = Root_HDA1;
+#endif
+}
+
+#ifdef CONFIG_MPC8560
+static irqreturn_t cpm2_cascade(int irq, void *dev_id, struct pt_regs *regs)
+{
+        while ((irq = cpm2_get_irq(regs)) >= 0)
+                __do_IRQ(irq, regs);
+        return IRQ_HANDLED;
+}
+
+static struct irqaction cpm2_irqaction = {
+        .handler = cpm2_cascade,
+        .flags = SA_INTERRUPT,
+        .mask = CPU_MASK_NONE,
+        .name = "cpm2_cascade",
+};
+#endif /* CONFIG_MPC8560 */
+
+void __init
+tqm85xx_init_IRQ(void)
+{
+        bd_t *binfo = (bd_t *) __res;
+
+        /* Determine the Physical Address of the OpenPIC regs */
+        phys_addr_t OpenPIC_PAddr =
+                binfo->bi_immr_base + MPC85xx_OPENPIC_OFFSET;
+        OpenPIC_Addr = ioremap(OpenPIC_PAddr, MPC85xx_OPENPIC_SIZE);
+        OpenPIC_InitSenses = tqm85xx_openpic_initsenses;
+        OpenPIC_NumInitSenses = sizeof (tqm85xx_openpic_initsenses);
+
+        /* Skip reserved space and internal sources */
+        openpic_set_sources(0, 32, OpenPIC_Addr + 0x10200);
+
+        /* Map PIC IRQs 0-11 */
+        openpic_set_sources(48, 12, OpenPIC_Addr + 0x10000);
+
+        /* we let openpic interrupts starting from an offset, to
+         * leave space for cascading interrupts underneath.
+         */
+        openpic_init(MPC85xx_OPENPIC_IRQ_OFFSET);
+
+#ifdef CONFIG_MPC8560
+        /* Setup CPM2 PIC */
+        cpm2_init_IRQ();
+
+        setup_irq(MPC85xx_IRQ_CPM, &cpm2_irqaction);
+#endif /* CONFIG_MPC8560 */
+
+        return;
+}
+
+int tqm85xx_show_cpuinfo(struct seq_file *m)
+{
+        uint pvid, svid, phid1;
+        uint memsize = total_memory;
+        bd_t *binfo = (bd_t *) __res;
+        unsigned int freq;
+
+        /* get the core frequency */
+        freq = binfo->bi_intfreq;
+
+        pvid = mfspr(SPRN_PVR);
+        svid = mfspr(SPRN_SVR);
+
+        seq_printf(m, "Vendor\t\t: TQ Components\n");
+        seq_printf(m, "Machine\t\t: TQM%s\n", cur_ppc_sys_spec->ppc_sys_name);
+        seq_printf(m, "clock\t\t: %dMHz\n", freq / 1000000);
+        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));
+
+        return 0;
+}
+
+#if defined(CONFIG_I2C) && defined(CONFIG_SENSORS_DS1337)
+extern ulong ds1337_get_rtc_time(void);
+extern int ds1337_set_rtc_time(unsigned long nowtime);
+
+static int __init
+tqm85xx_rtc_hookup(void)
+{
+        struct timespec tv;
+
+        ppc_md.set_rtc_time = ds1337_set_rtc_time;
+        ppc_md.get_rtc_time = ds1337_get_rtc_time;
+
+        tv.tv_nsec = 0;
+        tv.tv_sec = (ppc_md.get_rtc_time)();
+        do_settimeofday(&tv);
+
+        return 0;
+}
+late_initcall(tqm85xx_rtc_hookup);
+#endif
+
+#ifdef CONFIG_PCI
+/*
+ * interrupt routing
+ */
+int mpc85xx_map_irq(struct pci_dev *dev, unsigned char idsel, unsigned char pin)
+{
+        static char pci_irq_table[][4] =
+                /*
+                 *      PCI IDSEL/INTPIN->INTLINE
+                 *       A      B      C      D
+                 */
+                {
+                        {PIRQA, PIRQB, 0, 0},
+                };
+
+        const long min_idsel = 0x1c, max_idsel = 0x1c, irqs_per_slot = 4;
+        return PCI_IRQ_TABLE_LOOKUP;
+}
+
+int mpc85xx_exclude_device(u_char bus, u_char devfn)
+{
+        if (bus == 0 && PCI_SLOT(devfn) == 0)
+                return PCIBIOS_DEVICE_NOT_FOUND;
+        else
+                return PCIBIOS_SUCCESSFUL;
+}
+
+#endif /* CONFIG_PCI */
+
+#ifdef CONFIG_RAPIDIO
+void platform_rio_init(void)
+{
+        /* 512MB RIO LAW at 0xc0000000 */
+        mpc85xx_rio_setup(0xc0000000, 0x20000000);
+}
+#endif /* CONFIG_RAPIDIO */
+
+/* ************************************************************************ */
+void __init
+platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
+              unsigned long r6, unsigned long r7)
+{
+        /* parse_bootinfo must always be called first */
+        parse_bootinfo(find_bootinfo());
+
+        /*
+         * If we were passed in a board information, copy it into the
+         * residual data area.
+         */
+        if (r3) {
+                memcpy((void *) __res, (void *) (r3 + KERNELBASE),
+                       sizeof (bd_t));
+        }
+
+#if defined(CONFIG_SERIAL_TEXT_DEBUG) && !defined(CONFIG_MPC8560)
+        {
+                bd_t *binfo = (bd_t *) __res;
+                struct uart_port p;
+
+                /* Use the last TLB entry to map CCSRBAR to allow access to DUART regs */
+                settlbcam(num_tlbcam_entries - 1, binfo->bi_immr_base,
+                          binfo->bi_immr_base, MPC85xx_CCSRBAR_SIZE, _PAGE_IO, 0);
+
+                memset(&p, 0, sizeof (p));
+                p.iotype = SERIAL_IO_MEM;
+                p.membase = (void *) binfo->bi_immr_base + MPC85xx_UART0_OFFSET;
+                p.uartclk = binfo->bi_busfreq;
+
+                gen550_init(0, &p);
+
+                memset(&p, 0, sizeof (p));
+                p.iotype = SERIAL_IO_MEM;
+                p.membase = (void *) binfo->bi_immr_base + MPC85xx_UART1_OFFSET;
+                p.uartclk = binfo->bi_busfreq;
+
+                gen550_init(1, &p);
+        }
+#endif
+
+#if defined(CONFIG_BLK_DEV_INITRD)
+        /*
+         * If the init RAM disk has been configured in, and there's a valid
+         * starting address for it, set it up.
+         */
+        if (r4) {
+                initrd_start = r4 + KERNELBASE;
+                initrd_end = r5 + KERNELBASE;
+        }
+#endif                          /* CONFIG_BLK_DEV_INITRD */
+
+        /* Copy the kernel command line arguments to a safe place. */
+
+        if (r6) {
+                *(char *) (r7 + KERNELBASE) = 0;
+                strcpy(cmd_line, (char *) (r6 + KERNELBASE));
+        }
+
+        identify_ppc_sys_by_id(mfspr(SPRN_SVR));
+
+        /* setup the PowerPC module struct */
+        ppc_md.setup_arch = tqm85xx_setup_arch;
+        ppc_md.show_cpuinfo = tqm85xx_show_cpuinfo;
+
+        ppc_md.init_IRQ = tqm85xx_init_IRQ;
+        ppc_md.get_irq = openpic_get_irq;
+
+        ppc_md.restart = mpc85xx_restart;
+        ppc_md.power_off = mpc85xx_power_off;
+        ppc_md.halt = mpc85xx_halt;
+
+        ppc_md.find_end_of_memory = mpc85xx_find_end_of_memory;
+
+        ppc_md.time_init = NULL;
+        ppc_md.set_rtc_time = NULL;
+        ppc_md.get_rtc_time = NULL;
+        ppc_md.calibrate_decr = mpc85xx_calibrate_decr;
+
+#ifndef CONFIG_MPC8560
+#if defined(CONFIG_SERIAL_8250) && defined(CONFIG_SERIAL_TEXT_DEBUG)
+        ppc_md.progress = gen550_progress;
+#endif  /* CONFIG_SERIAL_8250 && CONFIG_SERIAL_TEXT_DEBUG */
+#if defined(CONFIG_SERIAL_8250) && defined(CONFIG_KGDB)
+        ppc_md.early_serial_map = mpc85xx_early_serial_map;
+#endif  /* CONFIG_SERIAL_8250 && CONFIG_KGDB */
+#endif /* CONFIG_MPC8560 */
+
+        if (ppc_md.progress)
+                ppc_md.progress("tqm85xx_init(): exit", 0);
+
+        return;
+}
diff --git a/arch/ppc/platforms/85xx/tqm85xx.h b/arch/ppc/platforms/85xx/tqm85xx.h
new file mode 100644
index 000000000000..3775eb363fde
--- /dev/null
+++ b/arch/ppc/platforms/85xx/tqm85xx.h
@@ -0,0 +1,56 @@
+/*
+ * arch/ppc/platforms/85xx/tqm85xx.h
+ *
+ * TQM85xx (40/41/55/60) board definitions
+ *
+ * Copyright (c) 2005 DENX Software Engineering
+ * Stefan Roese <sr@denx.de>
+ *
+ * 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.
+ *
+ */
+
+#ifndef __MACH_TQM85XX_H
+#define __MACH_TQM85XX_H
+
+#include <linux/config.h>
+#include <linux/init.h>
+#include <asm/ppcboot.h>
+
+#define BOARD_CCSRBAR           ((uint)0xe0000000)
+#define CCSRBAR_SIZE            ((uint)1024*1024)
+
+#define CPM_MAP_ADDR            (CCSRBAR + MPC85xx_CPM_OFFSET)
+
+#define PCI_CFG_ADDR_OFFSET     (0x8000)
+#define PCI_CFG_DATA_OFFSET     (0x8004)
+
+/* PCI interrupt controller */
+#define PIRQA                   MPC85xx_IRQ_EXT2
+#define PIRQB                   MPC85xx_IRQ_EXT3
+
+#define MPC85XX_PCI1_LOWER_IO   0x00000000
+#define MPC85XX_PCI1_UPPER_IO   0x00ffffff
+
+#define MPC85XX_PCI1_LOWER_MEM  0x80000000
+#define MPC85XX_PCI1_UPPER_MEM  0x9fffffff
+
+#define MPC85XX_PCI1_IO_BASE    0xe2000000
+#define MPC85XX_PCI1_MEM_OFFSET 0x00000000
+
+#define MPC85XX_PCI1_IO_SIZE    0x01000000
+
+#define BASE_BAUD 115200
+
+extern void mpc85xx_setup_hose(void) __init;
+extern void mpc85xx_restart(char *cmd);
+extern void mpc85xx_power_off(void);
+extern void mpc85xx_halt(void);
+extern void mpc85xx_init_IRQ(void) __init;
+extern unsigned long mpc85xx_find_end_of_memory(void) __init;
+extern void mpc85xx_calibrate_decr(void) __init;
+
+#endif /* __MACH_TQM85XX_H */