mn10300: add the MN10300/AM33 architecture to the kernel

Add architecture support for the MN10300/AM33 CPUs produced by MEI to the
kernel.

This patch also adds board support for the ASB2303 with the ASB2308 daughter
board, and the ASB2305.  The only processor supported is the MN103E010, which
is an AM33v2 core plus on-chip devices.

[akpm@linux-foundation.org: nuke cvs control strings]
Signed-off-by: Masakazu Urade <urade.masakazu@jp.panasonic.com>
Signed-off-by: Koichi Yasutake <yasutake.koichi@jp.panasonic.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

5 files changed, 409 insertions, 0 deletions

diff --git a/include/asm-mn10300/unit-asb2303/clock.h b/include/asm-mn10300/unit-asb2303/clock.h
new file mode 100644
index 000000000000..8b450e920af1
--- /dev/null
+++ b/include/asm-mn10300/unit-asb2303/clock.h
@@ -0,0 +1,45 @@
+/* ASB2303-specific clocks
+ *
+ * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@redhat.com)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public Licence
+ * as published by the Free Software Foundation; either version
+ * 2 of the Licence, or (at your option) any later version.
+ */
+
+#ifndef _ASM_UNIT_CLOCK_H
+#define _ASM_UNIT_CLOCK_H
+
+#ifndef __ASSEMBLY__
+
+#ifdef CONFIG_MN10300_RTC
+
+extern unsigned long mn10300_ioclk;     /* IOCLK (crystal speed) in HZ */
+extern unsigned long mn10300_iobclk;
+extern unsigned long mn10300_tsc_per_HZ;
+
+#define MN10300_IOCLK           ((unsigned long)mn10300_ioclk)
+/* If this processors has a another clock, uncomment the below. */
+/* #define MN10300_IOBCLK       ((unsigned long)mn10300_iobclk) */
+
+#else /* !CONFIG_MN10300_RTC */
+
+#define MN10300_IOCLK           33333333UL
+/* #define MN10300_IOBCLK       66666666UL */
+
+#endif /* !CONFIG_MN10300_RTC */
+
+#define MN10300_JCCLK           MN10300_IOCLK
+#define MN10300_TSCCLK          MN10300_IOCLK
+
+#ifdef CONFIG_MN10300_RTC
+#define MN10300_TSC_PER_HZ      ((unsigned long)mn10300_tsc_per_HZ)
+#else /* !CONFIG_MN10300_RTC */
+#define MN10300_TSC_PER_HZ      (MN10300_TSCCLK/HZ)
+#endif /* !CONFIG_MN10300_RTC */
+
+#endif /* !__ASSEMBLY__ */
+
+#endif /* _ASM_UNIT_CLOCK_H */
diff --git a/include/asm-mn10300/unit-asb2303/leds.h b/include/asm-mn10300/unit-asb2303/leds.h
new file mode 100644
index 000000000000..3a7543ea7b5c
--- /dev/null
+++ b/include/asm-mn10300/unit-asb2303/leds.h
@@ -0,0 +1,43 @@
+/* ASB2303-specific LEDs
+ *
+ * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@redhat.com)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public Licence
+ * as published by the Free Software Foundation; either version
+ * 2 of the Licence, or (at your option) any later version.
+ */
+
+#ifndef _ASM_UNIT_LEDS_H
+#define _ASM_UNIT_LEDS_H
+
+#include <asm/pio-regs.h>
+#include <asm/cpu-regs.h>
+#include <asm/exceptions.h>
+
+#define ASB2303_GPIO0DEF        __SYSREG(0xDB000000, u32)
+#define ASB2303_7SEGLEDS        __SYSREG(0xDB000008, u32)
+
+/*
+ * use the 7-segment LEDs to indicate states
+ */
+
+/* flip the 7-segment LEDs between "G" and "-" */
+#define mn10300_set_gdbleds(ONOFF)                      \
+do {                                                    \
+        ASB2303_7SEGLEDS = (ONOFF) ? 0x85 : 0x7f;       \
+} while (0)
+
+/* indicate double-fault by displaying "d" on the LEDs */
+#define mn10300_set_dbfleds                     \
+        mov     0x43,d0                 ;       \
+        movbu   d0,(ASB2303_7SEGLEDS)
+
+#ifndef __ASSEMBLY__
+extern void peripheral_leds_display_exception(enum exception_code code);
+extern void peripheral_leds_led_chase(void);
+extern void debug_to_serial(const char *p, int n);
+#endif /* __ASSEMBLY__ */
+
+#endif /* _ASM_UNIT_LEDS_H */
diff --git a/include/asm-mn10300/unit-asb2303/serial.h b/include/asm-mn10300/unit-asb2303/serial.h
new file mode 100644
index 000000000000..0d55cf5896ac
--- /dev/null
+++ b/include/asm-mn10300/unit-asb2303/serial.h
@@ -0,0 +1,136 @@
+/* ASB2303-specific 8250 serial ports
+ *
+ * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@redhat.com)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public Licence
+ * as published by the Free Software Foundation; either version
+ * 2 of the Licence, or (at your option) any later version.
+ */
+
+#ifndef _ASM_UNIT_SERIAL_H
+#define _ASM_UNIT_SERIAL_H
+
+#include <asm/cpu-regs.h>
+#include <asm/proc/irq.h>
+#include <linux/serial_reg.h>
+
+#define SERIAL_PORT0_BASE_ADDRESS       0xA6FB0000
+#define SERIAL_PORT1_BASE_ADDRESS       0xA6FC0000
+
+#define SERIAL_IRQ      XIRQ0   /* Dual serial (PC16552)        (Hi) */
+
+/*
+ * dispose of the /dev/ttyS0 and /dev/ttyS1 serial ports
+ */
+#ifndef CONFIG_GDBSTUB_ON_TTYSx
+
+#define SERIAL_PORT_DFNS                                                \
+        {                                                               \
+        .baud_base              = BASE_BAUD,                            \
+        .irq                    = SERIAL_IRQ,                           \
+        .flags                  = STD_COM_FLAGS,                        \
+        .iomem_base             = (u8 *) SERIAL_PORT0_BASE_ADDRESS,     \
+        .iomem_reg_shift        = 2,                                    \
+        .io_type                = SERIAL_IO_MEM,                        \
+        },                                                              \
+        {                                                               \
+        .baud_base              = BASE_BAUD,                            \
+        .irq                    = SERIAL_IRQ,                           \
+        .flags                  = STD_COM_FLAGS,                        \
+        .iomem_base             = (u8 *) SERIAL_PORT1_BASE_ADDRESS,     \
+        .iomem_reg_shift        = 2,                                    \
+        .io_type                = SERIAL_IO_MEM,                        \
+        },
+
+#ifndef __ASSEMBLY__
+
+static inline void __debug_to_serial(const char *p, int n)
+{
+}
+
+#endif /* !__ASSEMBLY__ */
+
+#else /* CONFIG_GDBSTUB_ON_TTYSx */
+
+#define SERIAL_PORT_DFNS /* both stolen by gdb-stub because they share an IRQ */
+
+#if defined(CONFIG_GDBSTUB_ON_TTYS0)
+#define GDBPORT_SERIAL_RX       __SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_RX  * 4, u8)
+#define GDBPORT_SERIAL_TX       __SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_TX  * 4, u8)
+#define GDBPORT_SERIAL_DLL      __SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_DLL * 4, u8)
+#define GDBPORT_SERIAL_DLM      __SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_DLM * 4, u8)
+#define GDBPORT_SERIAL_IER      __SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_IER * 4, u8)
+#define GDBPORT_SERIAL_IIR      __SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_IIR * 4, u8)
+#define GDBPORT_SERIAL_FCR      __SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_FCR * 4, u8)
+#define GDBPORT_SERIAL_LCR      __SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_LCR * 4, u8)
+#define GDBPORT_SERIAL_MCR      __SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_MCR * 4, u8)
+#define GDBPORT_SERIAL_LSR      __SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_LSR * 4, u8)
+#define GDBPORT_SERIAL_MSR      __SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_MSR * 4, u8)
+#define GDBPORT_SERIAL_SCR      __SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_SCR * 4, u8)
+#define GDBPORT_SERIAL_IRQ      SERIAL_IRQ
+
+#elif defined(CONFIG_GDBSTUB_ON_TTYS1)
+#define GDBPORT_SERIAL_RX       __SYSREG(SERIAL_PORT1_BASE_ADDRESS + UART_RX  * 4, u8)
+#define GDBPORT_SERIAL_TX       __SYSREG(SERIAL_PORT1_BASE_ADDRESS + UART_TX  * 4, u8)
+#define GDBPORT_SERIAL_DLL      __SYSREG(SERIAL_PORT1_BASE_ADDRESS + UART_DLL * 4, u8)
+#define GDBPORT_SERIAL_DLM      __SYSREG(SERIAL_PORT1_BASE_ADDRESS + UART_DLM * 4, u8)
+#define GDBPORT_SERIAL_IER      __SYSREG(SERIAL_PORT1_BASE_ADDRESS + UART_IER * 4, u8)
+#define GDBPORT_SERIAL_IIR      __SYSREG(SERIAL_PORT1_BASE_ADDRESS + UART_IIR * 4, u8)
+#define GDBPORT_SERIAL_FCR      __SYSREG(SERIAL_PORT1_BASE_ADDRESS + UART_FCR * 4, u8)
+#define GDBPORT_SERIAL_LCR      __SYSREG(SERIAL_PORT1_BASE_ADDRESS + UART_LCR * 4, u8)
+#define GDBPORT_SERIAL_MCR      __SYSREG(SERIAL_PORT1_BASE_ADDRESS + UART_MCR * 4, u8)
+#define GDBPORT_SERIAL_LSR      __SYSREG(SERIAL_PORT1_BASE_ADDRESS + UART_LSR * 4, u8)
+#define GDBPORT_SERIAL_MSR      __SYSREG(SERIAL_PORT1_BASE_ADDRESS + UART_MSR * 4, u8)
+#define GDBPORT_SERIAL_SCR      __SYSREG(SERIAL_PORT1_BASE_ADDRESS + UART_SCR * 4, u8)
+#define GDBPORT_SERIAL_IRQ      SERIAL_IRQ
+#endif
+
+#ifndef __ASSEMBLY__
+
+#define LSR_WAIT_FOR(STATE)                                     \
+do {                                                            \
+        while (!(GDBPORT_SERIAL_LSR & UART_LSR_##STATE)) {}     \
+} while (0)
+#define FLOWCTL_WAIT_FOR(LINE)                                  \
+do {                                                            \
+        while (!(GDBPORT_SERIAL_MSR & UART_MSR_##LINE)) {}      \
+} while (0)
+#define FLOWCTL_CLEAR(LINE)                     \
+do {                                            \
+        GDBPORT_SERIAL_MCR &= ~UART_MCR_##LINE; \
+} while (0)
+#define FLOWCTL_SET(LINE)                       \
+do {                                            \
+        GDBPORT_SERIAL_MCR |= UART_MCR_##LINE;  \
+} while (0)
+#define FLOWCTL_QUERY(LINE)     ({ GDBPORT_SERIAL_MSR & UART_MSR_##LINE; })
+
+static inline void __debug_to_serial(const char *p, int n)
+{
+        char ch;
+
+        FLOWCTL_SET(DTR);
+
+        for (; n > 0; n--) {
+                LSR_WAIT_FOR(THRE);
+                FLOWCTL_WAIT_FOR(CTS);
+
+                ch = *p++;
+                if (ch == 0x0a) {
+                        GDBPORT_SERIAL_TX = 0x0d;
+                        LSR_WAIT_FOR(THRE);
+                        FLOWCTL_WAIT_FOR(CTS);
+                }
+                GDBPORT_SERIAL_TX = ch;
+        }
+
+        FLOWCTL_CLEAR(DTR);
+}
+
+#endif /* !__ASSEMBLY__ */
+
+#endif /* CONFIG_GDBSTUB_ON_TTYSx */
+
+#endif /* _ASM_UNIT_SERIAL_H */
diff --git a/include/asm-mn10300/unit-asb2303/smc91111.h b/include/asm-mn10300/unit-asb2303/smc91111.h
new file mode 100644
index 000000000000..dd456e9c513f
--- /dev/null
+++ b/include/asm-mn10300/unit-asb2303/smc91111.h
@@ -0,0 +1,50 @@
+/* Support for the SMC91C111 NIC on an ASB2303
+ *
+ * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@redhat.com)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public Licence
+ * as published by the Free Software Foundation; either version
+ * 2 of the Licence, or (at your option) any later version.
+ */
+#ifndef _ASM_UNIT_SMC91111_H
+#define _ASM_UNIT_SMC91111_H
+
+#include <asm/intctl-regs.h>
+
+#define SMC91111_BASE           0xAA000300UL
+#define SMC91111_BASE_END       0xAA000400UL
+#define SMC91111_IRQ            XIRQ3
+
+#define SMC_CAN_USE_8BIT        0
+#define SMC_CAN_USE_16BIT       1
+#define SMC_CAN_USE_32BIT       0
+#define SMC_NOWAIT              1
+#define SMC_IRQ_FLAGS           (0)
+
+#if SMC_CAN_USE_8BIT
+#define SMC_inb(a, r)           inb((unsigned long) ((a) + (r)))
+#define SMC_outb(v, a, r)       outb(v, (unsigned long) ((a) + (r)))
+#endif
+
+#if SMC_CAN_USE_16BIT
+#define SMC_inw(a, r)           inw((unsigned long) ((a) + (r)))
+#define SMC_outw(v, a, r)       outw(v, (unsigned long) ((a) + (r)))
+#define SMC_insw(a, r, p, l)    insw((unsigned long) ((a) + (r)), (p), (l))
+#define SMC_outsw(a, r, p, l)   outsw((unsigned long) ((a) + (r)), (p), (l))
+#endif
+
+#if SMC_CAN_USE_32BIT
+#define SMC_inl(a, r)           inl((unsigned long) ((a) + (r)))
+#define SMC_outl(v, a, r)       outl(v, (unsigned long) ((a) + (r)))
+#define SMC_insl(a, r, p, l)    insl((unsigned long) ((a) + (r)), (p), (l))
+#define SMC_outsl(a, r, p, l)   outsl((unsigned long) ((a) + (r)), (p), (l))
+#endif
+
+#define RPC_LSA_DEFAULT         RPC_LED_100_10
+#define RPC_LSB_DEFAULT         RPC_LED_TX_RX
+
+#define set_irq_type(irq, type)
+
+#endif /*  _ASM_UNIT_SMC91111_H */
diff --git a/include/asm-mn10300/unit-asb2303/timex.h b/include/asm-mn10300/unit-asb2303/timex.h
new file mode 100644
index 000000000000..7e54b0cfdd03
--- /dev/null
+++ b/include/asm-mn10300/unit-asb2303/timex.h
@@ -0,0 +1,135 @@
+/* ASB2303-specific timer specifcations
+ *
+ * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@redhat.com)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public Licence
+ * as published by the Free Software Foundation; either version
+ * 2 of the Licence, or (at your option) any later version.
+ */
+#ifndef _ASM_UNIT_TIMEX_H
+#define _ASM_UNIT_TIMEX_H
+
+#ifndef __ASSEMBLY__
+#include <linux/irq.h>
+#endif /* __ASSEMBLY__ */
+
+#include <asm/timer-regs.h>
+#include <asm/unit/clock.h>
+
+/*
+ * jiffies counter specifications
+ */
+
+#define TMJCBR_MAX              0xffff
+#define TMJCBC                  TM01BC
+
+#define TMJCMD                  TM01MD
+#define TMJCBR                  TM01BR
+#define TMJCIRQ                 TM1IRQ
+#define TMJCICR                 TM1ICR
+#define TMJCICR_LEVEL           GxICR_LEVEL_5
+
+#ifndef __ASSEMBLY__
+
+static inline void startup_jiffies_counter(void)
+{
+        unsigned rate;
+        u16 md, t16;
+
+        /* use as little prescaling as possible to avoid losing accuracy */
+        md = TM0MD_SRC_IOCLK;
+        rate = MN10300_JCCLK / HZ;
+
+        if (rate > TMJCBR_MAX) {
+                md = TM0MD_SRC_IOCLK_8;
+                rate = MN10300_JCCLK / 8 / HZ;
+
+                if (rate > TMJCBR_MAX) {
+                        md = TM0MD_SRC_IOCLK_32;
+                        rate = MN10300_JCCLK / 32 / HZ;
+
+                        if (rate > TMJCBR_MAX)
+                                BUG();
+                }
+        }
+
+        TMJCBR = rate - 1;
+        t16 = TMJCBR;
+
+        TMJCMD =
+                md |
+                TM1MD_SRC_TM0CASCADE << 8 |
+                TM0MD_INIT_COUNTER |
+                TM1MD_INIT_COUNTER << 8;
+
+        TMJCMD =
+                md |
+                TM1MD_SRC_TM0CASCADE << 8 |
+                TM0MD_COUNT_ENABLE |
+                TM1MD_COUNT_ENABLE << 8;
+
+        t16 = TMJCMD;
+
+        TMJCICR |= GxICR_ENABLE | GxICR_DETECT | GxICR_REQUEST;
+        t16 = TMJCICR;
+}
+
+static inline void shutdown_jiffies_counter(void)
+{
+}
+
+#endif /* !__ASSEMBLY__ */
+
+
+/*
+ * timestamp counter specifications
+ */
+
+#define TMTSCBR_MAX             0xffffffff
+#define TMTSCBC                 TM45BC
+
+#ifndef __ASSEMBLY__
+
+static inline void startup_timestamp_counter(void)
+{
+        /* set up timer 4 & 5 cascaded as a 32-bit counter to count real time
+         * - count down from 4Gig-1 to 0 and wrap at IOCLK rate
+         */
+        TM45BR = TMTSCBR_MAX;
+
+        TM4MD = TM4MD_SRC_IOCLK;
+        TM4MD |= TM4MD_INIT_COUNTER;
+        TM4MD &= ~TM4MD_INIT_COUNTER;
+        TM4ICR = 0;
+
+        TM5MD = TM5MD_SRC_TM4CASCADE;
+        TM5MD |= TM5MD_INIT_COUNTER;
+        TM5MD &= ~TM5MD_INIT_COUNTER;
+        TM5ICR = 0;
+
+        TM5MD |= TM5MD_COUNT_ENABLE;
+        TM4MD |= TM4MD_COUNT_ENABLE;
+}
+
+static inline void shutdown_timestamp_counter(void)
+{
+        TM4MD = 0;
+        TM5MD = 0;
+}
+
+/*
+ * we use a cascaded pair of 16-bit down-counting timers to count I/O
+ * clock cycles for the purposes of time keeping
+ */
+typedef unsigned long cycles_t;
+
+static inline cycles_t read_timestamp_counter(void)
+{
+        return (cycles_t)TMTSCBC;
+}
+
+#endif /* !__ASSEMBLY__ */
+
+#endif /* _ASM_UNIT_TIMEX_H */