[PATCH] m32r: bootloader support for OPSPUT platform

This patch supports "m32r-g00ff" bootloader for an OPSPUT platform.

Applying this patch, it is possible to do ATA-boot from an IDE drive or
HTTP-boot from network by m32r-g00ff.

    * arch/m32r/boot/compressed/m32r_sio.c: Fix hangup on OPSPUT at boot.

    * arch/m32r/kernel/io_opsput.c: IDE support for OPSPUT.
    * arch/m32r/kernel/setup_opsput.c: ditto.
    * include/asm-m32r/ide.h: ditto.

Signed-off-by: Kazuhiro Inaoka <inaoka@linux-m32r.org>
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>

diff --git a/arch/m32r/boot/compressed/m32r_sio.c b/arch/m32r/boot/compressed/m32r_sio.c
index bce8af5..ee3c8be 100644 (file)
--- a/arch/m32r/boot/compressed/m32r_sio.c
+++ b/arch/m32r/boot/compressed/m32r_sio.c
@@ -2,6 +2,7 @@
  * arch/m32r/boot/compressed/m32r_sio.c
  *
  * 2003-02-12: Takeo Takahashi
+ * 2006-11-30: OPSPUT support by Kazuhiro Inaoka
  *
  */
 
@@ -16,7 +17,7 @@ static int puts(const char *s)
        return 0;
 }
 
-#if defined(CONFIG_PLAT_M32700UT_Alpha) || defined(CONFIG_PLAT_M32700UT)
+#if defined(CONFIG_PLAT_M32700UT_Alpha) || defined(CONFIG_PLAT_M32700UT) || defined(CONFIG_PLAT_OPSPUT)
 #include <asm/m32r.h>
 #include <asm/io.h>
 
@@ -31,7 +32,11 @@ static int puts(const char *s)
 #define BOOT_SIO0TXB   (volatile unsigned short *)(0x02c00000 + 0x2000c)
 #else
 #undef PLD_BASE
+#if defined(CONFIG_PLAT_OPSPUT)
+#define PLD_BASE       0x1cc00000
+#else
 #define PLD_BASE       0xa4c00000
+#endif
 #define BOOT_SIO0STS   PLD_ESIO0STS
 #define BOOT_SIO0TXB   PLD_ESIO0TXB
 #endif

diff --git a/arch/m32r/kernel/io_opsput.c b/arch/m32r/kernel/io_opsput.c
index da6c5f5..3cbb1f7 100644 (file)
--- a/arch/m32r/kernel/io_opsput.c
+++ b/arch/m32r/kernel/io_opsput.c
@@ -30,14 +30,34 @@ extern void pcc_iowrite_byte(int, unsigned long, void *, size_t, size_t, int);
 extern void pcc_iowrite_word(int, unsigned long, void *, size_t, size_t, int);
 #endif /* CONFIG_PCMCIA && CONFIG_M32R_CFC */
 
-#define PORT2ADDR(port)  _port2addr(port)
-#define PORT2ADDR_USB(port) _port2addr_usb(port)
+#define PORT2ADDR(port)                _port2addr(port)
+#define PORT2ADDR_USB(port)    _port2addr_usb(port)
 
 static inline void *_port2addr(unsigned long port)
 {
        return (void *)(port | NONCACHE_OFFSET);
 }
 
+#if defined(CONFIG_IDE) && !defined(CONFIG_M32R_CFC)
+static inline void *__port2addr_ata(unsigned long port)
+{
+       static int      dummy_reg;
+
+       switch (port) {
+       case 0x1f0:     return (void *)(0x0c002000 | NONCACHE_OFFSET);
+       case 0x1f1:     return (void *)(0x0c012800 | NONCACHE_OFFSET);
+       case 0x1f2:     return (void *)(0x0c012002 | NONCACHE_OFFSET);
+       case 0x1f3:     return (void *)(0x0c012802 | NONCACHE_OFFSET);
+       case 0x1f4:     return (void *)(0x0c012004 | NONCACHE_OFFSET);
+       case 0x1f5:     return (void *)(0x0c012804 | NONCACHE_OFFSET);
+       case 0x1f6:     return (void *)(0x0c012006 | NONCACHE_OFFSET);
+       case 0x1f7:     return (void *)(0x0c012806 | NONCACHE_OFFSET);
+       case 0x3f6:     return (void *)(0x0c01200e | NONCACHE_OFFSET);
+       default:        return (void *)&dummy_reg;
+       }
+}
+#endif
+
 /*
  * OPSPUT-LAN is located in the extended bus space
  * from 0x10000000 to 0x13ffffff on physical address.
@@ -97,6 +117,12 @@ unsigned char _inb(unsigned long port)
 {
        if (port >= LAN_IOSTART && port < LAN_IOEND)
                return _ne_inb(PORT2ADDR_NE(port));
+
+#if defined(CONFIG_IDE) && !defined(CONFIG_M32R_CFC)
+       else if ((port >= 0x1f0 && port <=0x1f7) || port == 0x3f6) {
+               return *(volatile unsigned char *)__port2addr_ata(port);
+       }
+#endif
 #if defined(CONFIG_PCMCIA) && defined(CONFIG_M32R_CFC)
        else if (port >= M32R_PCC_IOSTART0 && port <= M32R_PCC_IOEND0) {
                unsigned char b;
@@ -112,6 +138,11 @@ unsigned short _inw(unsigned long port)
 {
        if (port >= LAN_IOSTART && port < LAN_IOEND)
                return _ne_inw(PORT2ADDR_NE(port));
+#if defined(CONFIG_IDE) && !defined(CONFIG_M32R_CFC)
+       else if ((port >= 0x1f0 && port <=0x1f7) || port == 0x3f6) {
+               return *(volatile unsigned short *)__port2addr_ata(port);
+       }
+#endif
 #if defined(CONFIG_USB)
        else if(port >= 0x340 && port < 0x3a0)
                return *(volatile unsigned short *)PORT2ADDR_USB(port);
@@ -164,6 +195,11 @@ void _outb(unsigned char b, unsigned long port)
        if (port >= LAN_IOSTART && port < LAN_IOEND)
                _ne_outb(b, PORT2ADDR_NE(port));
        else
+#if defined(CONFIG_IDE) && !defined(CONFIG_M32R_CFC)
+       if ((port >= 0x1f0 && port <=0x1f7) || port == 0x3f6) {
+               *(volatile unsigned char *)__port2addr_ata(port) = b;
+       } else
+#endif
 #if defined(CONFIG_PCMCIA) && defined(CONFIG_M32R_CFC)
        if (port >= M32R_PCC_IOSTART0 && port <= M32R_PCC_IOEND0) {
                pcc_iowrite_byte(0, port, &b, sizeof(b), 1, 0);
@@ -177,6 +213,11 @@ void _outw(unsigned short w, unsigned long port)
        if (port >= LAN_IOSTART && port < LAN_IOEND)
                _ne_outw(w, PORT2ADDR_NE(port));
        else
+#if defined(CONFIG_IDE) && !defined(CONFIG_M32R_CFC)
+       if ((port >= 0x1f0 && port <=0x1f7) || port == 0x3f6) {
+               *(volatile unsigned short *)__port2addr_ata(port) = w;
+       } else
+#endif
 #if defined(CONFIG_USB)
        if(port >= 0x340 && port < 0x3a0)
                *(volatile unsigned short *)PORT2ADDR_USB(port) = w;
@@ -222,6 +263,14 @@ void _insb(unsigned int port, void *addr, unsigned long count)
 {
        if (port >= LAN_IOSTART && port < LAN_IOEND)
                _ne_insb(PORT2ADDR_NE(port), addr, count);
+#if defined(CONFIG_IDE) && !defined(CONFIG_M32R_CFC)
+       else if ((port >= 0x1f0 && port <=0x1f7) || port == 0x3f6) {
+               unsigned char *buf = addr;
+               unsigned char *portp = __port2addr_ata(port);
+               while (count--)
+                       *buf++ = *(volatile unsigned char *)portp;
+       }
+#endif
 #if defined(CONFIG_PCMCIA) && defined(CONFIG_M32R_CFC)
        else if (port >= M32R_PCC_IOSTART0 && port <= M32R_PCC_IOEND0) {
                pcc_ioread_byte(0, port, (void *)addr, sizeof(unsigned char),
@@ -254,6 +303,12 @@ void _insw(unsigned int port, void *addr, unsigned long count)
                pcc_ioread_word(9, port, (void *)addr, sizeof(unsigned short),
                                count, 1);
 #endif
+#if defined(CONFIG_IDE) && !defined(CONFIG_M32R_CFC)
+       } else if ((port >= 0x1f0 && port <=0x1f7) || port == 0x3f6) {
+               portp = __port2addr_ata(port);
+               while (count--)
+                       *buf++ = *(volatile unsigned short *)portp;
+#endif
        } else {
                portp = PORT2ADDR(port);
                while (count--)
@@ -280,6 +335,12 @@ void _outsb(unsigned int port, const void *addr, unsigned long count)
                portp = PORT2ADDR_NE(port);
                while (count--)
                        _ne_outb(*buf++, portp);
+#if defined(CONFIG_IDE) && !defined(CONFIG_M32R_CFC)
+       } else if ((port >= 0x1f0 && port <=0x1f7) || port == 0x3f6) {
+               portp = __port2addr_ata(port);
+               while (count--)
+                       *(volatile unsigned char *)portp = *buf++;
+#endif
 #if defined(CONFIG_PCMCIA) && defined(CONFIG_M32R_CFC)
        } else if (port >= M32R_PCC_IOSTART0 && port <= M32R_PCC_IOEND0) {
                pcc_iowrite_byte(0, port, (void *)addr, sizeof(unsigned char),
@@ -305,6 +366,12 @@ void _outsw(unsigned int port, const void *addr, unsigned long count)
                portp = PORT2ADDR_NE(port);
                while (count--)
                        *(volatile unsigned short *)portp = *buf++;
+#if defined(CONFIG_IDE) && !defined(CONFIG_M32R_CFC)
+       } else if ((port >= 0x1f0 && port <=0x1f7) || port == 0x3f6) {
+               portp = __port2addr_ata(port);
+               while (count--)
+                       *(volatile unsigned short *)portp = *buf++;
+#endif
 #if defined(CONFIG_PCMCIA) && defined(CONFIG_M32R_CFC)
        } else if (port >= M32R_PCC_IOSTART0 && port <= M32R_PCC_IOEND0) {
                pcc_iowrite_word(9, port, (void *)addr, sizeof(unsigned short),

diff --git a/arch/m32r/kernel/setup_opsput.c b/arch/m32r/kernel/setup_opsput.c
index 61d3b01..62d6b71 100644 (file)
--- a/arch/m32r/kernel/setup_opsput.c
+++ b/arch/m32r/kernel/setup_opsput.c
@@ -218,13 +218,13 @@ static void shutdown_opsput_lanpld_irq(unsigned int irq)
 
 static struct hw_interrupt_type opsput_lanpld_irq_type =
 {
-       "OPSPUT-PLD-LAN-IRQ",
-       startup_opsput_lanpld_irq,
-       shutdown_opsput_lanpld_irq,
-       enable_opsput_lanpld_irq,
-       disable_opsput_lanpld_irq,
-       mask_and_ack_opsput_lanpld,
-       end_opsput_lanpld_irq
+       .typename = "OPSPUT-PLD-LAN-IRQ",
+       .startup = startup_opsput_lanpld_irq,
+       .shutdown = shutdown_opsput_lanpld_irq,
+       .enable = enable_opsput_lanpld_irq,
+       .disable = disable_opsput_lanpld_irq,
+       .ack = mask_and_ack_opsput_lanpld,
+       .end = end_opsput_lanpld_irq
 };
 
 /*
@@ -374,7 +374,6 @@ void __init init_IRQ(void)
        disable_opsput_pld_irq(PLD_IRQ_SIO0_SND);
 #endif  /* CONFIG_SERIAL_M32R_PLDSIO */
 
-#if defined(CONFIG_M32R_CFC)
        /* INT#1: CFC IREQ on PLD */
        irq_desc[PLD_IRQ_CFIREQ].status = IRQ_DISABLED;
        irq_desc[PLD_IRQ_CFIREQ].chip = &opsput_pld_irq_type;
@@ -398,8 +397,6 @@ void __init init_IRQ(void)
        irq_desc[PLD_IRQ_CFC_EJECT].depth = 1;  /* disable nested irq */
        pld_icu_data[irq2pldirq(PLD_IRQ_CFC_EJECT)].icucr = PLD_ICUCR_IEN|PLD_ICUCR_ISMOD02;    /* 'H' edge sense */
        disable_opsput_pld_irq(PLD_IRQ_CFC_EJECT);
-#endif /* CONFIG_M32R_CFC */
-
 
        /*
         * INT0# is used for LAN, DIO

diff --git a/include/asm-m32r/ide.h b/include/asm-m32r/ide.h
index 219a0f7..c82ebe8 100644 (file)
--- a/include/asm-m32r/ide.h
+++ b/include/asm-m32r/ide.h
@@ -32,7 +32,8 @@
 static __inline__ int ide_default_irq(unsigned long base)
 {
        switch (base) {
-#if defined(CONFIG_PLAT_M32700UT) || defined(CONFIG_PLAT_MAPPI2)
+#if defined(CONFIG_PLAT_M32700UT) || defined(CONFIG_PLAT_MAPPI2) \
+       || defined(CONFIG_PLAT_OPSPUT)
                case 0x1f0: return PLD_IRQ_CFIREQ;
                default:
                        return 0;