[PATCH] m32r: Support M32104UT target platform

This patch is for supporting a new target platform, Renesas M32104UT
evaluation board.

The M32104UT is an eval board based on an uT-Engine specification.  This board
has an MMU-less M32R family processor, M32104.
http://www-wa0.personal-media.co.jp/pmc/archive/te/te_m32104_e.pdf

This board is one of the most popular M32R platform, so we have ported
Linux/M32R to it.

Signed-off-by: Naoto Sugai <Sugai.Naoto@ak.MitsubishiElectric.co.jp>
Signed-off-by: Hirokazu Takata <takata@linux-m32r.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

7 files changed, 222 insertions, 18 deletions

diff --git a/include/asm-m32r/assembler.h b/include/asm-m32r/assembler.h
index e1dff9d6baad..b7f4d8aaeb46 100644
--- a/include/asm-m32r/assembler.h
+++ b/include/asm-m32r/assembler.h
@@ -52,7 +52,7 @@
         or3     \reg, \reg, #low(\x)
         .endm
 
-#if !defined(CONFIG_CHIP_M32102)
+#if !(defined(CONFIG_CHIP_M32102) || defined(CONFIG_CHIP_M32104))
 #define STI(reg) STI_M reg
         .macro STI_M reg
         setpsw  #0x40       ->  nop
@@ -64,7 +64,7 @@
         clrpsw  #0x40       ->  nop
         ; WORKAROUND: "-> nop" is a workaround for the M32700(TS1).
         .endm
-#else   /* CONFIG_CHIP_M32102 */
+#else   /* CONFIG_CHIP_M32102 || CONFIG_CHIP_M32104 */
 #define STI(reg) STI_M reg
         .macro STI_M reg
         mvfc    \reg, psw
@@ -191,12 +191,12 @@
         and  \reg, sp
         .endm
 
-#if !defined(CONFIG_CHIP_M32102)
+#if !(defined(CONFIG_CHIP_M32102) || defined(CONFIG_CHIP_M32104))
         .macro  SWITCH_TO_KERNEL_STACK
         ; switch to kernel stack (spi)
         clrpsw  #0x80       ->  nop
         .endm
-#else   /* CONFIG_CHIP_M32102 */
+#else   /* CONFIG_CHIP_M32102 || CONFIG_CHIP_M32104 */
         .macro  SWITCH_TO_KERNEL_STACK
         push    r0              ; save r0 for working
         mvfc    r0, psw
@@ -218,7 +218,7 @@
         .fillinsn
 2:
         .endm
-#endif  /* CONFIG_CHIP_M32102 */
+#endif  /* CONFIG_CHIP_M32102 || CONFIG_CHIP_M32104 */
 
 #endif  /* __ASSEMBLY__ */
 
diff --git a/include/asm-m32r/cacheflush.h b/include/asm-m32r/cacheflush.h
index 46fc4c325108..e57427b6e249 100644
--- a/include/asm-m32r/cacheflush.h
+++ b/include/asm-m32r/cacheflush.h
@@ -7,7 +7,7 @@
 extern void _flush_cache_all(void);
 extern void _flush_cache_copyback_all(void);
 
-#if defined(CONFIG_CHIP_M32700) || defined(CONFIG_CHIP_OPSP)
+#if defined(CONFIG_CHIP_M32700) || defined(CONFIG_CHIP_OPSP) || defined(CONFIG_CHIP_M32104)
 #define flush_cache_all()                       do { } while (0)
 #define flush_cache_mm(mm)                      do { } while (0)
 #define flush_cache_range(vma, start, end)      do { } while (0)
diff --git a/include/asm-m32r/irq.h b/include/asm-m32r/irq.h
index 8ed77968ecb4..ca943954572a 100644
--- a/include/asm-m32r/irq.h
+++ b/include/asm-m32r/irq.h
@@ -65,6 +65,22 @@
 #define NR_IRQS \
         (OPSPUT_NUM_CPU_IRQ + OPSPUT_NUM_PLD_IRQ \
         + OPSPUT_NUM_LCD_PLD_IRQ + OPSPUT_NUM_LAN_PLD_IRQ)
+
+#elif defined(CONFIG_PLAT_M32104UT)
+/*
+ * IRQ definitions for M32104UT
+ *  M32104 Chip: 64 interrupts
+ *  ICU of M32104UT-on-board PLD: 32 interrupts cascaded to INT1# chip pin
+ */
+#define M32104UT_NUM_CPU_IRQ    (64)
+#define M32104UT_NUM_PLD_IRQ    (32)
+#define M32104UT_IRQ_BASE       0
+#define M32104UT_CPU_IRQ_BASE   M32104UT_IRQ_BASE
+#define M32104UT_PLD_IRQ_BASE   (M32104UT_CPU_IRQ_BASE + M32104UT_NUM_CPU_IRQ)
+
+#define NR_IRQS \
+    (M32104UT_NUM_CPU_IRQ + M32104UT_NUM_PLD_IRQ)
+
 #else
 #define NR_IRQS 64
 #endif
diff --git a/include/asm-m32r/m32102.h b/include/asm-m32r/m32102.h
index cb98101f4f6e..0bd0a3f1662d 100644
--- a/include/asm-m32r/m32102.h
+++ b/include/asm-m32r/m32102.h
@@ -11,7 +11,11 @@
 /*======================================================================*
  * Special Function Register
  *======================================================================*/
+#if !defined(CONFIG_CHIP_M32104)
 #define M32R_SFR_OFFSET  (0x00E00000)  /* 0x00E00000-0x00EFFFFF 1[MB] */
+#else
+#define M32R_SFR_OFFSET  (0x00700000)  /* 0x00700000-0x007FFFFF 1[MB] */
+#endif
 
 /*
  * Clock and Power Management registers.
@@ -100,7 +104,7 @@
 #define M32R_MFT5RLD_PORTL     (0x0C+M32R_MFT5_OFFSET)  /* MFT4 reload */
 #define M32R_MFT5CMPRLD_PORTL  (0x10+M32R_MFT5_OFFSET)  /* MFT4 compare reload */
 
-#ifdef CONFIG_CHIP_M32700
+#if defined(CONFIG_CHIP_M32700) || defined(CONFIG_CHIP_M32104)
 #define M32R_MFTCR_MFT0MSK  (1UL<<31)  /* b0 */
 #define M32R_MFTCR_MFT1MSK  (1UL<<30)  /* b1 */
 #define M32R_MFTCR_MFT2MSK  (1UL<<29)  /* b2 */
@@ -113,7 +117,7 @@
 #define M32R_MFTCR_MFT3EN   (1UL<<20)  /* b11 */
 #define M32R_MFTCR_MFT4EN   (1UL<<19)  /* b12 */
 #define M32R_MFTCR_MFT5EN   (1UL<<18)  /* b13 */
-#else   /* not CONFIG_CHIP_M32700 */
+#else   /* not CONFIG_CHIP_M32700 && not CONFIG_CHIP_M32104 */
 #define M32R_MFTCR_MFT0MSK  (1UL<<15)  /* b16 */
 #define M32R_MFTCR_MFT1MSK  (1UL<<14)  /* b17 */
 #define M32R_MFTCR_MFT2MSK  (1UL<<13)  /* b18 */
@@ -126,7 +130,7 @@
 #define M32R_MFTCR_MFT3EN   (1UL<<4)   /* b27 */
 #define M32R_MFTCR_MFT4EN   (1UL<<3)   /* b28 */
 #define M32R_MFTCR_MFT5EN   (1UL<<2)   /* b29 */
-#endif  /* not CONFIG_CHIP_M32700 */
+#endif  /* not CONFIG_CHIP_M32700 && not CONFIG_CHIP_M32104 */
 
 #define M32R_MFTMOD_CC_MASK    (1UL<<15)  /* b16 */
 #define M32R_MFTMOD_TCCR       (1UL<<13)  /* b18 */
@@ -241,8 +245,24 @@
 #define M32R_IRQ_MFT1    (17)  /* MFT1 */
 #define M32R_IRQ_MFT2    (18)  /* MFT2 */
 #define M32R_IRQ_MFT3    (19)  /* MFT3 */
-#define M32R_IRQ_MFT4    (20)  /* MFT4 */
-#define M32R_IRQ_MFT5    (21)  /* MFT5 */
+#ifdef CONFIG_CHIP_M32104
+#define M32R_IRQ_MFTX0   (24)  /* MFTX0 */
+#define M32R_IRQ_MFTX1   (25)  /* MFTX1 */
+#define M32R_IRQ_DMA0    (32)  /* DMA0 */
+#define M32R_IRQ_DMA1    (33)  /* DMA1 */
+#define M32R_IRQ_DMA2    (34)  /* DMA2 */
+#define M32R_IRQ_DMA3    (35)  /* DMA3 */
+#define M32R_IRQ_SIO0_R  (40)  /* SIO0 send    */
+#define M32R_IRQ_SIO0_S  (41)  /* SIO0 receive */
+#define M32R_IRQ_SIO1_R  (42)  /* SIO1 send    */
+#define M32R_IRQ_SIO1_S  (43)  /* SIO1 receive */
+#define M32R_IRQ_SIO2_R  (44)  /* SIO2 send    */
+#define M32R_IRQ_SIO2_S  (45)  /* SIO2 receive */
+#define M32R_IRQ_SIO3_R  (46)  /* SIO3 send    */
+#define M32R_IRQ_SIO3_S  (47)  /* SIO3 receive */
+#define M32R_IRQ_ADC     (56)  /* ADC */
+#define M32R_IRQ_PC      (57)  /* PC */
+#else /* ! M32104 */
 #define M32R_IRQ_DMA0    (32)  /* DMA0 */
 #define M32R_IRQ_DMA1    (33)  /* DMA1 */
 #define M32R_IRQ_SIO0_R  (48)  /* SIO0 send    */
@@ -255,6 +275,7 @@
 #define M32R_IRQ_SIO3_S  (55)  /* SIO3 receive */
 #define M32R_IRQ_SIO4_R  (56)  /* SIO4 send    */
 #define M32R_IRQ_SIO4_S  (57)  /* SIO4 receive */
+#endif /* ! M32104 */
 
 #ifdef CONFIG_SMP
 #define M32R_IRQ_IPI0    (56)
diff --git a/include/asm-m32r/m32104ut/m32104ut_pld.h b/include/asm-m32r/m32104ut/m32104ut_pld.h
new file mode 100644
index 000000000000..a4eac20553df
--- /dev/null
+++ b/include/asm-m32r/m32104ut/m32104ut_pld.h
@@ -0,0 +1,163 @@
+/*
+ * include/asm/m32104ut/m32104ut_pld.h
+ *
+ * Definitions for Programable Logic Device(PLD) on M32104UT board.
+ * Based on m32700ut_pld.h
+ *
+ * Copyright (c) 2002   Takeo Takahashi
+ * Copyright (c) 2005   Naoto Sugai
+ *
+ * This file is subject to the terms and conditions of the GNU General
+ * Public License.  See the file "COPYING" in the main directory of
+ * this archive for more details.
+ */
+
+#ifndef _M32104UT_M32104UT_PLD_H
+#define _M32104UT_M32104UT_PLD_H
+
+#include <linux/config.h>
+
+#if defined(CONFIG_PLAT_M32104UT)
+#define PLD_PLAT_BASE           0x02c00000
+#else
+#error "no platform configuration"
+#endif
+
+#ifndef __ASSEMBLY__
+/*
+ * C functions use non-cache address.
+ */
+#define PLD_BASE                (PLD_PLAT_BASE /* + NONCACHE_OFFSET */)
+#define __reg8                  (volatile unsigned char *)
+#define __reg16                 (volatile unsigned short *)
+#define __reg32                 (volatile unsigned int *)
+#else
+#define PLD_BASE                (PLD_PLAT_BASE + NONCACHE_OFFSET)
+#define __reg8
+#define __reg16
+#define __reg32
+#endif  /* __ASSEMBLY__ */
+
+/* CFC */
+#define PLD_CFRSTCR             __reg16(PLD_BASE + 0x0000)
+#define PLD_CFSTS               __reg16(PLD_BASE + 0x0002)
+#define PLD_CFIMASK             __reg16(PLD_BASE + 0x0004)
+#define PLD_CFBUFCR             __reg16(PLD_BASE + 0x0006)
+
+/* MMC */
+#define PLD_MMCCR               __reg16(PLD_BASE + 0x4000)
+#define PLD_MMCMOD              __reg16(PLD_BASE + 0x4002)
+#define PLD_MMCSTS              __reg16(PLD_BASE + 0x4006)
+#define PLD_MMCBAUR             __reg16(PLD_BASE + 0x400a)
+#define PLD_MMCCMDBCUT          __reg16(PLD_BASE + 0x400c)
+#define PLD_MMCCDTBCUT          __reg16(PLD_BASE + 0x400e)
+#define PLD_MMCDET              __reg16(PLD_BASE + 0x4010)
+#define PLD_MMCWP               __reg16(PLD_BASE + 0x4012)
+#define PLD_MMCWDATA            __reg16(PLD_BASE + 0x5000)
+#define PLD_MMCRDATA            __reg16(PLD_BASE + 0x6000)
+#define PLD_MMCCMDDATA          __reg16(PLD_BASE + 0x7000)
+#define PLD_MMCRSPDATA          __reg16(PLD_BASE + 0x7006)
+
+/* ICU
+ *  ICUISTS:    status register
+ *  ICUIREQ0:   request register
+ *  ICUIREQ1:   request register
+ *  ICUCR3:     control register for CFIREQ# interrupt
+ *  ICUCR4:     control register for CFC Card insert interrupt
+ *  ICUCR5:     control register for CFC Card eject interrupt
+ *  ICUCR6:     control register for external interrupt
+ *  ICUCR11:    control register for MMC Card insert/eject interrupt
+ *  ICUCR13:    control register for SC error interrupt
+ *  ICUCR14:    control register for SC receive interrupt
+ *  ICUCR15:    control register for SC send interrupt
+ */
+
+#define PLD_IRQ_INT0            (M32104UT_PLD_IRQ_BASE + 0)     /* None */
+#define PLD_IRQ_CFIREQ          (M32104UT_PLD_IRQ_BASE + 3)     /* CF IREQ */
+#define PLD_IRQ_CFC_INSERT      (M32104UT_PLD_IRQ_BASE + 4)     /* CF Insert */
+#define PLD_IRQ_CFC_EJECT       (M32104UT_PLD_IRQ_BASE + 5)     /* CF Eject */
+#define PLD_IRQ_EXINT           (M32104UT_PLD_IRQ_BASE + 6)     /* EXINT */
+#define PLD_IRQ_MMCCARD         (M32104UT_PLD_IRQ_BASE + 11)    /* MMC Insert/Eject */
+#define PLD_IRQ_SC_ERROR        (M32104UT_PLD_IRQ_BASE + 13)    /* SC error */
+#define PLD_IRQ_SC_RCV          (M32104UT_PLD_IRQ_BASE + 14)    /* SC receive */
+#define PLD_IRQ_SC_SND          (M32104UT_PLD_IRQ_BASE + 15)    /* SC send */
+
+#define PLD_ICUISTS             __reg16(PLD_BASE + 0x8002)
+#define PLD_ICUISTS_VECB_MASK   (0xf000)
+#define PLD_ICUISTS_VECB(x)     ((x) & PLD_ICUISTS_VECB_MASK)
+#define PLD_ICUISTS_ISN_MASK    (0x07c0)
+#define PLD_ICUISTS_ISN(x)      ((x) & PLD_ICUISTS_ISN_MASK)
+#define PLD_ICUCR3              __reg16(PLD_BASE + 0x8104)
+#define PLD_ICUCR4              __reg16(PLD_BASE + 0x8106)
+#define PLD_ICUCR5              __reg16(PLD_BASE + 0x8108)
+#define PLD_ICUCR6              __reg16(PLD_BASE + 0x810a)
+#define PLD_ICUCR11             __reg16(PLD_BASE + 0x8114)
+#define PLD_ICUCR13             __reg16(PLD_BASE + 0x8118)
+#define PLD_ICUCR14             __reg16(PLD_BASE + 0x811a)
+#define PLD_ICUCR15             __reg16(PLD_BASE + 0x811c)
+#define PLD_ICUCR_IEN           (0x1000)
+#define PLD_ICUCR_IREQ          (0x0100)
+#define PLD_ICUCR_ISMOD00       (0x0000)        /* Low edge */
+#define PLD_ICUCR_ISMOD01       (0x0010)        /* Low level */
+#define PLD_ICUCR_ISMOD02       (0x0020)        /* High edge */
+#define PLD_ICUCR_ISMOD03       (0x0030)        /* High level */
+#define PLD_ICUCR_ILEVEL0       (0x0000)
+#define PLD_ICUCR_ILEVEL1       (0x0001)
+#define PLD_ICUCR_ILEVEL2       (0x0002)
+#define PLD_ICUCR_ILEVEL3       (0x0003)
+#define PLD_ICUCR_ILEVEL4       (0x0004)
+#define PLD_ICUCR_ILEVEL5       (0x0005)
+#define PLD_ICUCR_ILEVEL6       (0x0006)
+#define PLD_ICUCR_ILEVEL7       (0x0007)
+
+/* Power Control of MMC and CF */
+#define PLD_CPCR                __reg16(PLD_BASE + 0x14000)
+#define PLD_CPCR_CDP            0x0001
+
+/* LED Control
+ *
+ * 1: DIP swich side
+ * 2: Reset switch side
+ */
+#define PLD_IOLEDCR             __reg16(PLD_BASE + 0x14002)
+#define PLD_IOLED_1_ON          0x001
+#define PLD_IOLED_1_OFF         0x000
+#define PLD_IOLED_2_ON          0x002
+#define PLD_IOLED_2_OFF         0x000
+
+/* DIP Switch
+ *  0: Write-protect of Flash Memory (0:protected, 1:non-protected)
+ *  1: -
+ *  2: -
+ *  3: -
+ */
+#define PLD_IOSWSTS             __reg16(PLD_BASE + 0x14004)
+#define PLD_IOSWSTS_IOSW2       0x0200
+#define PLD_IOSWSTS_IOSW1       0x0100
+#define PLD_IOSWSTS_IOWP0       0x0001
+
+/* CRC */
+#define PLD_CRC7DATA            __reg16(PLD_BASE + 0x18000)
+#define PLD_CRC7INDATA          __reg16(PLD_BASE + 0x18002)
+#define PLD_CRC16DATA           __reg16(PLD_BASE + 0x18004)
+#define PLD_CRC16INDATA         __reg16(PLD_BASE + 0x18006)
+#define PLD_CRC16ADATA          __reg16(PLD_BASE + 0x18008)
+#define PLD_CRC16AINDATA        __reg16(PLD_BASE + 0x1800a)
+
+/* RTC */
+#define PLD_RTCCR               __reg16(PLD_BASE + 0x1c000)
+#define PLD_RTCBAUR             __reg16(PLD_BASE + 0x1c002)
+#define PLD_RTCWRDATA           __reg16(PLD_BASE + 0x1c004)
+#define PLD_RTCRDDATA           __reg16(PLD_BASE + 0x1c006)
+#define PLD_RTCRSTODT           __reg16(PLD_BASE + 0x1c008)
+
+/* SIM Card */
+#define PLD_SCCR                __reg16(PLD_BASE + 0x38000)
+#define PLD_SCMOD               __reg16(PLD_BASE + 0x38004)
+#define PLD_SCSTS               __reg16(PLD_BASE + 0x38006)
+#define PLD_SCINTCR             __reg16(PLD_BASE + 0x38008)
+#define PLD_SCBAUR              __reg16(PLD_BASE + 0x3800a)
+#define PLD_SCTXB               __reg16(PLD_BASE + 0x3800c)
+#define PLD_SCRXB               __reg16(PLD_BASE + 0x3800e)
+
+#endif  /* _M32104UT_M32104UT_PLD_H */
diff --git a/include/asm-m32r/m32r.h b/include/asm-m32r/m32r.h
index ec142be00862..f9bb48ac9d7f 100644
--- a/include/asm-m32r/m32r.h
+++ b/include/asm-m32r/m32r.h
@@ -14,7 +14,7 @@
 #include <asm/m32r_mp_fpga.h>
 #elif defined(CONFIG_CHIP_VDEC2) || defined(CONFIG_CHIP_XNUX2) \
         || defined(CONFIG_CHIP_M32700) || defined(CONFIG_CHIP_M32102) \
-        || defined(CONFIG_CHIP_OPSP)
+        || defined(CONFIG_CHIP_OPSP) || defined(CONFIG_CHIP_M32104)
 #include <asm/m32102.h>
 #endif
 
@@ -43,6 +43,10 @@
 #include <asm/m32700ut/m32700ut_pld.h>
 #endif
 
+#if defined(CONFIG_PLAT_M32104UT)
+#include <asm/m32104ut/m32104ut_pld.h>
+#endif  /* CONFIG_PLAT_M32104 */
+
 /*
  * M32R Register
  */
diff --git a/include/asm-m32r/system.h b/include/asm-m32r/system.h
index 5eee832b73a0..dcf619a0a0b0 100644
--- a/include/asm-m32r/system.h
+++ b/include/asm-m32r/system.h
@@ -69,12 +69,12 @@
 } while(0)
 
 /* Interrupt Control */
-#if !defined(CONFIG_CHIP_M32102)
+#if !defined(CONFIG_CHIP_M32102) && !defined(CONFIG_CHIP_M32104)
 #define local_irq_enable() \
         __asm__ __volatile__ ("setpsw #0x40 -> nop": : :"memory")
 #define local_irq_disable() \
         __asm__ __volatile__ ("clrpsw #0x40 -> nop": : :"memory")
-#else   /* CONFIG_CHIP_M32102 */
+#else   /* CONFIG_CHIP_M32102 || CONFIG_CHIP_M32104 */
 static inline void local_irq_enable(void)
 {
         unsigned long tmpreg;
@@ -96,7 +96,7 @@ static inline void local_irq_disable(void)
                 "mvtc   %0, psw \n\t"
         : "=&r" (tmpreg0), "=&r" (tmpreg1) : : "cbit", "memory");
 }
-#endif  /* CONFIG_CHIP_M32102 */
+#endif  /* CONFIG_CHIP_M32102 || CONFIG_CHIP_M32104 */
 
 #define local_save_flags(x) \
         __asm__ __volatile__("mvfc %0,psw" : "=r"(x) : /* no input */)
@@ -105,13 +105,13 @@ static inline void local_irq_disable(void)
         __asm__ __volatile__("mvtc %0,psw" : /* no outputs */ \
                 : "r" (x) : "cbit", "memory")
 
-#if !defined(CONFIG_CHIP_M32102)
+#if !(defined(CONFIG_CHIP_M32102) || defined(CONFIG_CHIP_M32104))
 #define local_irq_save(x)                               \
         __asm__ __volatile__(                           \
                 "mvfc   %0, psw;                \n\t"   \
                 "clrpsw #0x40 -> nop;           \n\t"   \
                 : "=r" (x) : /* no input */ : "memory")
-#else   /* CONFIG_CHIP_M32102 */
+#else   /* CONFIG_CHIP_M32102 || CONFIG_CHIP_M32104 */
 #define local_irq_save(x)                               \
         ({                                              \
                 unsigned long tmpreg;                   \
@@ -124,7 +124,7 @@ static inline void local_irq_disable(void)
                         : "=r" (x), "=&r" (tmpreg)      \
                         : : "cbit", "memory");          \
         })
-#endif  /* CONFIG_CHIP_M32102 */
+#endif  /* CONFIG_CHIP_M32102 || CONFIG_CHIP_M32104 */
 
 #define irqs_disabled()                                 \
         ({                                              \