[PATCH] powerpc: Updated Initial MPC8540 ADS port with OF Flat Dev

Updated patch for support for mpc8540_ads in arch/powerpc with a
flat OF device tree. This patch does not yet support PCI or I2C.

Signed-off-by: Becky Bruce <becky.bruce@freescale.com>
Signed-off-by: Jon Loeliger <jdl@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>

7 files changed, 330 insertions, 67 deletions

diff --git a/arch/powerpc/platforms/85xx/Kconfig b/arch/powerpc/platforms/85xx/Kconfig
index c5bc2821d99..d3d0ff745e8 100644
--- a/arch/powerpc/platforms/85xx/Kconfig
+++ b/arch/powerpc/platforms/85xx/Kconfig
@@ -1,86 +1,30 @@
-config 85xx
-        bool
-        depends on E500
-        default y
-
-config PPC_INDIRECT_PCI_BE
-        bool
-        depends on 85xx
-        default y
-
-menu "Freescale 85xx options"
-        depends on E500
+menu "Platform support"
+        depends on PPC_85xx
 
 choice
         prompt "Machine Type"
-        depends on 85xx
         default MPC8540_ADS
 
 config MPC8540_ADS
         bool "Freescale MPC8540 ADS"
         help
-          This option enables support for the MPC 8540 ADS evaluation board.
-
-config MPC8548_CDS
-        bool "Freescale MPC8548 CDS"
-        help
-          This option enablese support for the MPC8548 CDS evaluation board.
-
-config MPC8555_CDS
-        bool "Freescale MPC8555 CDS"
-        help
-          This option enablese support for the MPC8555 CDS evaluation board.
-
-config MPC8560_ADS
-        bool "Freescale MPC8560 ADS"
-        help
-          This option enables support for the MPC 8560 ADS evaluation board.
-
-config SBC8560
-        bool "WindRiver PowerQUICC III SBC8560"
-        help
-          This option enables support for the WindRiver PowerQUICC III 
-          SBC8560 board.
-
-config STX_GP3
-        bool "Silicon Turnkey Express GP3"
-        help
-          This option enables support for the Silicon Turnkey Express GP3
-          board.
+          This option enables support for the MPC 8540 ADS board
 
 endchoice
 
-# It's often necessary to know the specific 85xx processor type.
-# Fortunately, it is implied (so far) from the board type, so we
-# don't need to ask more redundant questions.
 config MPC8540
         bool
-        depends on MPC8540_ADS
-        default y
-
-config MPC8548
-        bool
-        depends on MPC8548_CDS
-        default y
+        select PPC_UDBG_16550
+        select PPC_INDIRECT_PCI
+        default y if MPC8540_ADS
 
-config MPC8555
-        bool
-        depends on MPC8555_CDS
-        default y
-
-config MPC8560
+config PPC_INDIRECT_PCI_BE
         bool
-        depends on SBC8560 || MPC8560_ADS || STX_GP3
-        default y
-
-config 85xx_PCI2
-        bool "Supprt for 2nd PCI host controller"
-        depends on MPC8555_CDS
+        depends on PPC_85xx
         default y
 
-config PPC_GEN550
+config MPIC
         bool
-        depends on MPC8540 || SBC8560 || MPC8555
         default y
 
 endmenu
diff --git a/arch/powerpc/platforms/85xx/Makefile b/arch/powerpc/platforms/85xx/Makefile
index 6407197ffd8..b443206e61a 100644
--- a/arch/powerpc/platforms/85xx/Makefile
+++ b/arch/powerpc/platforms/85xx/Makefile
@@ -1 +1,4 @@
-# empty makefile so make clean works
+#
+# Makefile for the PowerPC 85xx linux kernel.
+#
+obj-$(CONFIG_PPC_85xx)  += mpc85xx.o mpc85xx_ads.o
diff --git a/arch/powerpc/platforms/85xx/mpc8540_ads.h b/arch/powerpc/platforms/85xx/mpc8540_ads.h
new file mode 100644
index 00000000000..47609c97e01
--- /dev/null
+++ b/arch/powerpc/platforms/85xx/mpc8540_ads.h
@@ -0,0 +1,60 @@
+/*
+ * arch/ppc/platforms/85xx/mpc8540_ads.h
+ *
+ * MPC8540ADS board definitions
+ *
+ * Maintainer: Kumar Gala <kumar.gala@freescale.com>
+ *
+ * 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.
+ *
+ */
+
+#ifndef __MACH_MPC8540ADS_H__
+#define __MACH_MPC8540ADS_H__
+
+#include <linux/config.h>
+#include <linux/initrd.h>
+
+#define BOARD_CCSRBAR           ((uint)0xe0000000)
+#define BCSR_ADDR               ((uint)0xf8000000)
+#define BCSR_SIZE               ((uint)(32 * 1024))
+
+/* PCI interrupt controller */
+#define PIRQA           MPC85xx_IRQ_EXT1
+#define PIRQB           MPC85xx_IRQ_EXT2
+#define PIRQC           MPC85xx_IRQ_EXT3
+#define PIRQD           MPC85xx_IRQ_EXT4
+
+#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
+
+/* PCI config */
+#define PCI1_CFG_ADDR_OFFSET    (0x8000)
+#define PCI1_CFG_DATA_OFFSET    (0x8004)
+
+#define PCI2_CFG_ADDR_OFFSET    (0x9000)
+#define PCI2_CFG_DATA_OFFSET    (0x9004)
+
+/* Additional register for PCI-X configuration */
+#define PCIX_NEXT_CAP   0x60
+#define PCIX_CAP_ID     0x61
+#define PCIX_COMMAND    0x62
+#define PCIX_STATUS     0x64
+
+/* Offset of CPM register space */
+#define CPM_MAP_ADDR    (CCSRBAR + MPC85xx_CPM_OFFSET)
+
+#endif /* __MACH_MPC8540ADS_H__ */
diff --git a/arch/powerpc/platforms/85xx/mpc85xx.c b/arch/powerpc/platforms/85xx/mpc85xx.c
new file mode 100644
index 00000000000..82510385d88
--- /dev/null
+++ b/arch/powerpc/platforms/85xx/mpc85xx.c
@@ -0,0 +1,31 @@
+/*
+ * MPC85xx generic code.
+ *
+ * Maintained by Kumar Gala (see MAINTAINERS for contact information)
+ *
+ * Copyright 2005 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/irq.h>
+#include <linux/module.h>
+#include <asm/irq.h>
+
+extern void abort(void);
+
+void
+mpc85xx_restart(char *cmd)
+{
+        local_irq_disable();
+        abort();
+}
+
+/* For now this is a pass through */
+phys_addr_t fixup_bigphys_addr(phys_addr_t addr, phys_addr_t size)
+{
+        return addr;
+};
+EXPORT_SYMBOL(fixup_bigphys_addr);
diff --git a/arch/powerpc/platforms/85xx/mpc85xx.h b/arch/powerpc/platforms/85xx/mpc85xx.h
new file mode 100644
index 00000000000..be75abb2a28
--- /dev/null
+++ b/arch/powerpc/platforms/85xx/mpc85xx.h
@@ -0,0 +1,17 @@
+/*
+ * arch/ppc/platforms/85xx/mpc85xx.h
+ *
+ * MPC85xx soc definitions/function decls
+ *
+ * Maintainer: Kumar Gala <kumar.gala@freescale.com>
+ *
+ * Copyright 2005 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.
+ *
+ */
+
+extern void mpc85xx_restart(char *);
diff --git a/arch/powerpc/platforms/85xx/mpc85xx_ads.c b/arch/powerpc/platforms/85xx/mpc85xx_ads.c
new file mode 100644
index 00000000000..41191e9aa52
--- /dev/null
+++ b/arch/powerpc/platforms/85xx/mpc85xx_ads.c
@@ -0,0 +1,208 @@
+/*
+ * MPC85xx setup and early boot code plus other random bits.
+ *
+ * Maintained by Kumar Gala (see MAINTAINERS for contact information)
+ *
+ * Copyright 2005 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/irq.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 <linux/serial_core.h>
+#include <linux/serial_8250.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/bootinfo.h>
+#include <asm/pci-bridge.h>
+#include <asm/mpc85xx.h>
+#include <asm/irq.h>
+#include <asm/immap_85xx.h>
+#include <asm/prom.h>
+#include <asm/mpic.h>
+#include <mm/mmu_decl.h>
+#include <asm/udbg.h>
+
+#include <sysdev/fsl_soc.h>
+#include "mpc85xx.h"
+
+#ifndef CONFIG_PCI
+unsigned long isa_io_base = 0;
+unsigned long isa_mem_base = 0;
+#endif
+
+
+/*
+ * Internal interrupts are all Level Sensitive, and Positive Polarity
+ *
+ * Note:  Likely, this table and the following function should be
+ *        obtained and derived from the OF Device Tree.
+ */
+static u_char mpc85xx_ads_openpic_initsenses[] __initdata = {
+        MPC85XX_INTERNAL_IRQ_SENSES,
+        0x0,                                            /* External  0: */
+#if defined(CONFIG_PCI)
+        (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE),      /* Ext 1: PCI slot 0 */
+        (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE),      /* Ext 2: PCI slot 1 */
+        (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE),      /* Ext 3: PCI slot 2 */
+        (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE),      /* Ext 4: PCI slot 3 */
+#else
+        0x0,                            /* External  1: */
+        0x0,                            /* External  2: */
+        0x0,                            /* External  3: */
+        0x0,                            /* External  4: */
+#endif
+        (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE),      /* External 5: PHY */
+        0x0,                            /* External  6: */
+        (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE),      /* External 7: PHY */
+        0x0,                            /* External  8: */
+        0x0,                            /* External  9: */
+        0x0,                            /* External 10: */
+        0x0,                            /* External 11: */
+};
+
+
+void __init mpc85xx_ads_pic_init(void)
+{
+        struct mpic *mpic1;
+        phys_addr_t OpenPIC_PAddr;
+
+        /* Determine the Physical Address of the OpenPIC regs */
+        OpenPIC_PAddr = get_immrbase() + MPC85xx_OPENPIC_OFFSET;
+
+        mpic1 = mpic_alloc(OpenPIC_PAddr,
+                        MPIC_PRIMARY | MPIC_WANTS_RESET | MPIC_BIG_ENDIAN,
+                        4, MPC85xx_OPENPIC_IRQ_OFFSET, 0, 250,
+                        mpc85xx_ads_openpic_initsenses,
+                        sizeof(mpc85xx_ads_openpic_initsenses), " OpenPIC  ");
+        BUG_ON(mpic1 == NULL);
+        mpic_assign_isu(mpic1, 0, OpenPIC_PAddr + 0x10200);
+        mpic_assign_isu(mpic1, 1, OpenPIC_PAddr + 0x10280);
+        mpic_assign_isu(mpic1, 2, OpenPIC_PAddr + 0x10300);
+        mpic_assign_isu(mpic1, 3, OpenPIC_PAddr + 0x10380);
+        mpic_assign_isu(mpic1, 4, OpenPIC_PAddr + 0x10400);
+        mpic_assign_isu(mpic1, 5, OpenPIC_PAddr + 0x10480);
+        mpic_assign_isu(mpic1, 6, OpenPIC_PAddr + 0x10500);
+        mpic_assign_isu(mpic1, 7, OpenPIC_PAddr + 0x10580);
+
+        /* dummy mappings to get to 48 */
+        mpic_assign_isu(mpic1, 8, OpenPIC_PAddr + 0x10600);
+        mpic_assign_isu(mpic1, 9, OpenPIC_PAddr + 0x10680);
+        mpic_assign_isu(mpic1, 10, OpenPIC_PAddr + 0x10700);
+        mpic_assign_isu(mpic1, 11, OpenPIC_PAddr + 0x10780);
+
+        /* External ints */
+        mpic_assign_isu(mpic1, 12, OpenPIC_PAddr + 0x10000);
+        mpic_assign_isu(mpic1, 13, OpenPIC_PAddr + 0x10080);
+        mpic_assign_isu(mpic1, 14, OpenPIC_PAddr + 0x10100);
+        mpic_init(mpic1);
+}
+
+
+/*
+ * Setup the architecture
+ */
+static void __init
+mpc85xx_ads_setup_arch(void)
+{
+        struct device_node *cpu;
+
+        if (ppc_md.progress)
+                ppc_md.progress("mpc85xx_ads_setup_arch()", 0);
+
+        cpu = of_find_node_by_type(NULL, "cpu");
+        if (cpu != 0) {
+                unsigned int *fp;
+
+                fp = (int *)get_property(cpu, "clock-frequency", NULL);
+                if (fp != 0)
+                        loops_per_jiffy = *fp / HZ;
+                else
+                        loops_per_jiffy = 50000000 / HZ;
+                of_node_put(cpu);
+        }
+
+#ifdef  CONFIG_ROOT_NFS
+        ROOT_DEV = Root_NFS;
+#else
+        ROOT_DEV = Root_HDA1;
+#endif
+}
+
+
+void
+mpc85xx_ads_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: Freescale Semiconductor\n");
+        seq_printf(m, "Machine\t\t: mpc85xx\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));
+}
+
+
+void __init
+platform_init(void)
+{
+        ppc_md.setup_arch = mpc85xx_ads_setup_arch;
+        ppc_md.show_cpuinfo = mpc85xx_ads_show_cpuinfo;
+
+        ppc_md.init_IRQ = mpc85xx_ads_pic_init;
+        ppc_md.get_irq = mpic_get_irq;
+
+        ppc_md.restart = mpc85xx_restart;
+        ppc_md.power_off = NULL;
+        ppc_md.halt = NULL;
+
+        ppc_md.time_init = NULL;
+        ppc_md.set_rtc_time = NULL;
+        ppc_md.get_rtc_time = NULL;
+        ppc_md.calibrate_decr = generic_calibrate_decr;
+
+        ppc_md.progress = udbg_progress;
+
+        if (ppc_md.progress)
+                ppc_md.progress("mpc85xx_ads platform_init(): exit", 0);
+}
+
+
diff --git a/arch/powerpc/platforms/Makefile b/arch/powerpc/platforms/Makefile
index 04073fd987e..c4f6b0d2d14 100644
--- a/arch/powerpc/platforms/Makefile
+++ b/arch/powerpc/platforms/Makefile
@@ -8,7 +8,7 @@ endif
 obj-$(CONFIG_PPC_CHRP)          += chrp/
 obj-$(CONFIG_4xx)               += 4xx/
 obj-$(CONFIG_PPC_83xx)          += 83xx/
-obj-$(CONFIG_85xx)              += 85xx/
+obj-$(CONFIG_PPC_85xx)          += 85xx/
 obj-$(CONFIG_PPC_PSERIES)       += pseries/
 obj-$(CONFIG_PPC_ISERIES)       += iseries/
 obj-$(CONFIG_PPC_MAPLE)         += maple/