* Patch by Thomas Frieden, 13 Nov 2002:

  Add code for AmigaOne board
  (preliminary merge to U-Boot, still WIP)

* Patch by Jon Diekema, 12 Nov 2002:
  - Adding URL for IEEE OUI lookup
  - Making the autoboot #defines dependent on CONFIG_AUTOBOOT_KEYED
    being defined.
  - In the CONFIG_EXTRA_ENV_SETTINGS #define, the root-on-initrd and
    root-on-nfs macros are designed to switch how the default boot
    method gets defined.

1 files changed, 573 insertions, 0 deletions

diff --git a/board/MAI/AmigaOneG3SE/articiaS_pci.c b/board/MAI/AmigaOneG3SE/articiaS_pci.c
new file mode 100644
index 0000000..774c32d
--- /dev/null
+++ b/board/MAI/AmigaOneG3SE/articiaS_pci.c
@@ -0,0 +1,573 @@
+/*
+ * (C) Copyright 2002
+ * Hyperion Entertainment, Hans-JoergF@hyperion-entertainment.com
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.	 See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+#include <pci.h>
+#include "memio.h"
+#include "articiaS.h"
+
+//#define ARTICIA_PCI_DEBUG
+
+#ifdef  ARTICIA_PCI_DEBUG
+#define PRINTF(fmt,args...)     printf (fmt ,##args)
+#else
+#define PRINTF(fmt,args...)
+#endif
+
+struct pci_controller articiaS_hose;
+
+long irq_alloc(long wanted);
+
+static pci_dev_t pci_hose_find_class(struct pci_controller *hose, int bus, short find_class, int index);
+static int articiaS_init_vga(void);
+static void pci_cfgfunc_dummy(struct pci_controller *host, pci_dev_t dev, struct pci_config_table *table);
+unsigned char pci_irq_alloc(void);
+
+extern void via_cfgfunc_via686(struct pci_controller * host, pci_dev_t dev, struct pci_config_table *table);
+extern void via_cfgfunc_ide_init(struct pci_controller *host, pci_dev_t dev, struct pci_config_table *table);
+extern void via_init_irq_routing(uint8 []);
+extern void via_init_afterscan(void);
+
+#define cfgfunc_via686      1
+#define cfgfunc_dummy  2
+#define cfgfunc_ide_init    3
+
+static struct pci_config_table config_table[] =
+{
+    {
+	0x1106, PCI_ANY_ID, PCI_CLASS_BRIDGE_ISA, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID,
+	(void *)cfgfunc_via686, {0, 0, 0}
+    },
+    {
+	0x1106, PCI_ANY_ID, PCI_ANY_ID, 0,7,4,
+	(void *)cfgfunc_dummy, {0,0,0}
+    },
+    {
+	0x1106, 0x3068, PCI_ANY_ID, 0, 7, PCI_ANY_ID,
+	(void *)cfgfunc_dummy, {0,0,0}
+    },
+    {
+	0x1106, PCI_ANY_ID, PCI_ANY_ID, 0,7,1,
+	(void *)cfgfunc_ide_init, {0,0,0}
+    },
+    {
+	0,
+    }
+};
+
+
+void pci_cfgfunc_dummy(struct pci_controller *host, pci_dev_t dev, struct pci_config_table *table)
+{
+
+
+}
+
+unsigned long irq_penalties[16] =
+{
+    1000,    /* 0:timer */
+    1000,    /* 1:keyboard */
+    1000,    /* 2:cascade */
+    50,      /* 3:serial (COM2) */
+    50,      /* 4:serial (COM1) */
+    4,       /* 5:USB2 */
+    100,     /* 6:floppy */
+    3,       /* 7:parallel */
+    50,      /* 8:AC97/MC97 */
+    0,       /* 9: */
+    3,       /* 10:: */
+    0,       /* 11: */
+    3,       /* 12: USB1 */
+    0,       /* 13: */
+    100,     /* 14: ide0 */
+    100,     /* 15: ide1 */
+};
+
+
+/*
+ * The following defines a hard-coded interrupt mapping for the
+ * know devices on the board.
+ * If a device isn't found here, assumed to be a device that's
+ * plugged into a PCI or AGP slot
+ * NOTE: This table is machine dependant.
+ */
+
+struct pci_irq_fixup_table
+{
+    uint8   bus;             /* Bus number */
+    uint8   device;          /* Device number */
+    uint8   func;            /* Function number */
+    uint8   interrupt;       /* Interrupt to use (0xff to disable) */
+};
+
+struct pci_irq_fixup_table fixuptab [] =
+{
+    { 0, 0, 0, 0xff},        /* Articia S host bridge */
+    { 0, 1, 0, 0xff},        /* Articia S AGP bridge */
+//    { 0, 6, 0, 0x05},        /* 3COM ethernet */
+    { 0, 7, 0, 0xff},        /* VIA southbridge */
+    { 0, 7, 1, 0x0e},        /* IDE controller in legacy mode */
+//    { 0, 7, 2, 0x05},        /* First USB controller */
+//    { 0, 7, 3, 0x0c},        /* Second USB controller (shares interrupt with ethernet) */
+    { 0, 7, 4, 0xff},        /* ACPI Power Management */
+//    { 0, 7, 5, 0x08},        /* AC97 */
+//    { 0, 7, 6, 0x08},        /* MC97 */
+    { 0xff, 0xff, 0xff, 0xff}
+};
+
+
+/*
+ * This table maps IRQ's to PCI interrupts
+ */
+
+uint8 pci_intmap[4] = {0, 0, 0, 0};
+
+/*
+ * Map PCI slots to interrupt routings
+ * This table lists the device number assigned to a card inserted
+ * into the slot, along with a permutation for the slot's IRQ routing.
+ * NOTE: This table is machine dependant.
+ */
+
+struct pci_slot_irq_routing
+{
+    uint8 bus;
+    uint8 device;
+
+    uint8 ints[4];
+};
+
+struct pci_slot_irq_routing amigaone_pci_routing[] =
+{
+    {0,  8,   {0, 1, 2, 3}},       /* Slot 1 (left of riser slot) */
+    {0,  9,   {1, 2, 3, 0}},       /* Slot 2 (middle slot) */
+    {0, 10,   {2, 3, 0, 1}},       /* Slot 3 (leftmost slot) */
+    {1,  0,   {1, 0, 2, 3}},       /* AGP slot (only IRQA and IRQB) */
+    {1,  1,   {1, 2, 3, 0}},       /* PCI slot on AGP bus */
+    {0,  6,   {3, 3, 3, 3}},       /* On board ethernet */
+    {0,  7,   {0, 1, 2, 3}},       /* Southbridge */
+    {0xff, 0, {0, 0, 0, 0}}
+};
+
+void articiaS_pci_irq_init(void)
+{
+    char *s;
+
+    s = getenv("pci_irqa");
+    if (s)
+	pci_intmap[0] = simple_strtoul (s, NULL, 10);
+    else
+	pci_intmap[0] = pci_irq_alloc();
+
+    s = getenv("pci_irqb");
+    if (s)
+	pci_intmap[1] = simple_strtoul (s, NULL, 10);
+    else
+	pci_intmap[1] = pci_irq_alloc();
+
+    s = getenv("pci_irqc");
+    if (s)
+	pci_intmap[2] = simple_strtoul (s, NULL, 10);
+    else
+	pci_intmap[2] = pci_irq_alloc();
+
+    s = getenv("pci_irqd");
+    if (s)
+	pci_intmap[3] = simple_strtoul (s, NULL, 10);
+    else
+	pci_intmap[3] = pci_irq_alloc();
+}
+
+
+unsigned char pci_irq_alloc(void)
+{
+    int i;
+    int interrupt = 10;
+    unsigned long min_penalty = 1000;
+
+    /* Search for the minimal penalty, favoring interrupts at the end */
+    for (i = 0; i < 16; i++)
+    {
+	if (irq_penalties[i] <= min_penalty)
+	{
+	    interrupt = i;
+	    min_penalty = irq_penalties[i];
+	}
+    }
+
+    PRINTF("pci_irq_alloc: Minimal penalty is %ld for %d\n", min_penalty, interrupt);
+
+    irq_penalties[interrupt]++;
+
+    return interrupt;
+}
+
+
+void articiaS_pci_fixup_irq(struct pci_controller *hose, pci_dev_t dev)
+{
+    int8 bus, device, func, pin, line;
+    int i;
+
+    bus = PCI_BUS(dev);
+    device = PCI_DEV(dev);
+    func = PCI_FUNC(dev);
+
+    PRINTF("Fixup irq of %d:%d.%d\n", bus, device, func);
+
+    /* Search for the device in the table */
+    for (i = 0; fixuptab[i].bus != 0xff; i++)
+    {
+	if (bus == fixuptab[i].bus && device == fixuptab[i].device && func == fixuptab[i].func)
+	{
+	    /* If the device needs an interrupt, write it */
+	    if (fixuptab[i].interrupt != 0xff)
+	    {
+		PRINTF("Assigning IRQ %d (fixed)\n", fixuptab[i].interrupt);
+		pci_write_config_byte(dev, PCI_INTERRUPT_LINE, fixuptab[i].interrupt);
+	    }
+	    else
+	    {
+		/* Otherwise, see if it wants an interrupt, and disable it if needed */
+		pci_read_config_byte(dev, PCI_INTERRUPT_PIN, &pin);
+		if (pin)
+		{
+		    PRINTF("Disabling IRQ\n");
+		    pci_write_config_byte(dev, PCI_INTERRUPT_LINE, 0xff);
+		}
+	    }
+
+	    return;
+	}
+    }
+
+    /* If we get here, we have another PCI device in a slot... find the appropriate IRQ */
+
+    /* Find matching pin */
+    pci_read_config_byte(dev, PCI_INTERRUPT_PIN, &pin);
+    pin--;
+
+    /* Search for it's map */
+    for (i = 0; amigaone_pci_routing[i].bus != 0xff; i++)
+    {
+	if (bus == amigaone_pci_routing[i].bus && device == amigaone_pci_routing[i].device)
+	{
+	    line = pci_intmap[amigaone_pci_routing[i].ints[pin]];
+	    PRINTF("Assigning IRQ %d (pin %d)\n", line, pin);
+	    pci_write_config_byte(dev, PCI_INTERRUPT_LINE, line);
+	    return;
+	}
+    }
+
+    PRINTF("Unkonwn PCI device found\n");
+}
+
+void articiaS_pci_init (void)
+{
+    int i;
+    char *s;
+
+    PRINTF("atriciaS_pci_init\n");
+
+    // Why aren't these relocated??
+    for (i=0; config_table[i].config_device; i++)
+    {
+	switch((int)config_table[i].config_device)
+	{
+	case cfgfunc_via686:     config_table[i].config_device = via_cfgfunc_via686;      break;
+	case cfgfunc_dummy:      config_table[i].config_device = pci_cfgfunc_dummy;       break;
+	case cfgfunc_ide_init:   config_table[i].config_device = via_cfgfunc_ide_init;    break;
+	default: PRINTF("Error: Unknown constant\n");
+	}
+    }
+
+    articiaS_hose.first_busno = 0;
+    articiaS_hose.last_busno = 0xff;
+    articiaS_hose.config_table = config_table;
+    articiaS_hose.fixup_irq = articiaS_pci_fixup_irq;
+
+    articiaS_pci_irq_init();
+
+    /* System memory */
+    pci_set_region(articiaS_hose.regions + 0,
+		   ARTICIAS_SYS_BUS,
+		   ARTICIAS_SYS_PHYS,
+		   ARTICIAS_SYS_MAXSIZE,
+		   PCI_REGION_MEM | PCI_REGION_MEMORY);
+
+    /* PCI memory space */
+    pci_set_region(articiaS_hose.regions + 1,
+		   ARTICIAS_PCI_BUS,
+		   ARTICIAS_PCI_PHYS,
+		   ARTICIAS_PCI_MAXSIZE,
+		   PCI_REGION_MEM);
+
+    /* PCI io space */
+    pci_set_region(articiaS_hose.regions + 2,
+		   ARTICIAS_PCIIO_BUS,
+		   ARTICIAS_PCIIO_PHYS,
+		   ARTICIAS_PCIIO_MAXSIZE,
+		   PCI_REGION_IO);
+
+    /* PCI/ISA io space */
+    pci_set_region(articiaS_hose.regions + 3,
+		   ARTICIAS_ISAIO_BUS,
+		   ARTICIAS_ISAIO_PHYS,
+		   ARTICIAS_ISAIO_MAXSIZE,
+		   PCI_REGION_IO);
+
+
+
+    articiaS_hose.region_count = 4;
+
+    pci_setup_indirect(&articiaS_hose, ARTICIAS_PCI_CFGADDR, ARTICIAS_PCI_CFGDATA);
+    PRINTF("Registering articia hose...\n");
+    pci_register_hose(&articiaS_hose);
+    PRINTF("Enabling AGP...\n");
+    pci_write_config_byte(PCI_BDF(0,0,0), 0x58, 0x01);
+    PRINTF("Scanning bus...\n");
+    articiaS_hose.last_busno = pci_hose_scan(&articiaS_hose);
+
+    via_init_irq_routing(pci_intmap);
+
+    PRINTF("After-Scan results:\n");
+    PRINTF("Bus range: %d - %d\n", articiaS_hose.first_busno , articiaS_hose.last_busno);
+
+    via_init_afterscan();
+
+    pci_write_config_byte(PCI_BDF(0,1,0), PCI_INTERRUPT_LINE, 0xFF);
+
+    s = getenv("as_irq");
+    if (s)
+    {
+	pci_write_config_byte(PCI_BDF(0,0,0), PCI_INTERRUPT_LINE, simple_strtoul (s, NULL, 10));
+    }
+
+    s = getenv("x86_run_bios");
+    if (!s || (s && strcmp(s, "on")==0))
+    {
+	if (articiaS_init_vga() == -1)
+	{
+	    /* If the VGA didn't init and we have stdout set to VGA, reset to serial */
+/* 	    s = getenv("stdout"); */
+/* 	    if (s && strcmp(s, "vga") == 0) */
+/* 	    { */
+/* 		setenv("stdout", "serial"); */
+/* 	    } */
+	}
+    }
+    pci_write_config_byte(PCI_BDF(0,1,0), PCI_INTERRUPT_LINE, 0xFF);
+
+}
+
+pci_dev_t pci_hose_find_class(struct pci_controller *hose, int bus, short find_class, int index)
+{
+    unsigned int sub_bus, found_multi=0;
+    unsigned short vendor, class;
+    unsigned char header_type;
+    pci_dev_t dev;
+    u8 c1, c2;
+
+    sub_bus = bus;
+
+    for (dev =  PCI_BDF(bus,0,0);
+	 dev <  PCI_BDF(bus,PCI_MAX_PCI_DEVICES-1,PCI_MAX_PCI_FUNCTIONS-1);
+	 dev += PCI_BDF(0,0,1))
+    {
+	if ( dev == PCI_BDF(hose->first_busno,0,0) )
+	    continue;
+
+	if (PCI_FUNC(dev) && !found_multi)
+	    continue;
+
+	pci_hose_read_config_byte(hose, dev, PCI_HEADER_TYPE, &header_type);
+
+	pci_hose_read_config_word(hose, dev, PCI_VENDOR_ID, &vendor);
+
+	if (vendor != 0xffff && vendor != 0x0000)
+	{
+
+	    if (!PCI_FUNC(dev))
+		found_multi = header_type & 0x80;
+	    pci_hose_read_config_byte(hose, dev, 0x0B, &c1);
+	    pci_hose_read_config_byte(hose, dev, 0x0A, &c2);
+	    class = c1<<8 | c2;
+	    //printf("At %02x:%02x:%02x: class %x\n",
+	    //	   PCI_BUS(dev), PCI_DEV(dev), PCI_FUNC(dev), class);
+	    if (class == find_class)
+	    {
+		if (index == 0)
+		    return dev;
+		else index--;
+	    }
+	}
+    }
+
+    return ~0;
+}
+
+
+/*
+ * For a given bus number, find the bridge on this hose that provides this
+ * bus number. The function scans for bridges and peeks config space offset
+ * 0x19 (PCI_SECONDARY_BUS).
+ */
+pci_dev_t pci_find_bridge_for_bus(struct pci_controller *hose, int busnr)
+{
+    pci_dev_t dev;
+    int bus;
+    unsigned int found_multi=0;
+    unsigned char header_type;
+    unsigned short vendor;
+    unsigned char secondary_bus;
+
+    if (hose == NULL) hose = &articiaS_hose;
+
+    if (busnr < hose->first_busno || busnr > hose->last_busno) return PCI_ANY_ID; // Not in range
+
+    /*
+     * The bridge must be on a lower bus number
+     */
+    for (bus = hose->first_busno; bus < busnr; bus++)
+    {
+	for (dev =  PCI_BDF(bus,0,0);
+	     dev <  PCI_BDF(bus,PCI_MAX_PCI_DEVICES-1,PCI_MAX_PCI_FUNCTIONS-1);
+	     dev += PCI_BDF(0,0,1))
+	{
+	    if ( dev == PCI_BDF(hose->first_busno,0,0) )
+		continue;
+
+	    if (PCI_FUNC(dev) && !found_multi)
+		continue;
+
+	    pci_hose_read_config_byte(hose, dev, PCI_HEADER_TYPE, &header_type);
+
+	    pci_hose_read_config_word(hose, dev, PCI_VENDOR_ID, &vendor);
+
+	    if (vendor != 0xffff && vendor != 0x0000)
+	    {
+
+		if (!PCI_FUNC(dev))
+		    found_multi = header_type & 0x80;
+		if (header_type == 1) // Bridge device header
+		{
+		    pci_hose_read_config_byte(hose, dev, PCI_SECONDARY_BUS, &secondary_bus);
+		    if ((int)secondary_bus == busnr) return dev;
+		}
+
+	    }
+	}
+    }
+    return PCI_ANY_ID;
+}
+
+static short classes[] =
+{
+    PCI_CLASS_DISPLAY_VGA,
+    PCI_CLASS_DISPLAY_XGA,
+    PCI_CLASS_DISPLAY_3D,
+    PCI_CLASS_DISPLAY_OTHER,
+    ~0
+};
+
+extern int execute_bios(pci_dev_t gr_dev, void *);
+
+pci_dev_t video_dev;
+
+int articiaS_init_vga (void)
+{
+	DECLARE_GLOBAL_DATA_PTR;
+
+    extern void shutdown_bios(void);
+    pci_dev_t dev = ~0;
+    int busnr = 0;
+    int classnr = 0;
+
+    video_dev = PCI_ANY_ID;
+
+    printf("VGA:   ");
+
+    PRINTF("Trying to initialize x86 VGA Card(s)\n");
+
+    while (dev == ~0)
+    {
+	PRINTF("Searching for class 0x%x on bus %d\n", classes[classnr], busnr);
+	/* Find the first of this class on this bus */
+	dev = pci_hose_find_class(&articiaS_hose, busnr, classes[classnr], 0);
+	if (dev != ~0) break;
+	busnr++;
+	if (busnr > articiaS_hose.last_busno)
+	{
+	    busnr = 0;
+	    classnr ++;
+	    if (classes[classnr] == ~0)
+	    {
+		printf("NOT PRESENT\n");
+		return -1;
+	    }
+	}
+    }
+
+    /*
+     * If we get here we have found the first graphics card.
+     * If the bus number is not 0, then it is probably behind a bridge, and the
+     * bridge needs to be told to forward VGA access.
+     */
+
+    if (PCI_BUS(dev) != 0)
+    {
+	pci_dev_t bridge;
+	PRINTF("Behind bridge, looking for bridge\n");
+	bridge = pci_find_bridge_for_bus(&articiaS_hose, PCI_BUS(dev));
+	if (dev != PCI_ANY_ID)
+	{
+	    unsigned char agp_control_0;
+	    PRINTF("Got the bridge at %02x:%02x:%02x\n",
+		   PCI_BUS(bridge), PCI_DEV(bridge), PCI_FUNC(bridge));
+	    pci_hose_read_config_byte(&articiaS_hose, bridge, 0x3E, &agp_control_0);
+	    agp_control_0 |= 0x18;
+	    pci_hose_write_config_byte(&articiaS_hose, bridge, 0x3E, agp_control_0);
+	    PRINTF("Configured for VGA forwarding\n");
+	}
+    }
+
+    /*
+     * Now try to run the bios
+     */
+
+    if (execute_bios(dev, gd->relocaddr))
+    {
+	printf("OK\n");
+	video_dev = dev;
+    }
+    else
+    {
+	printf("ERROR\n");
+    }
+
+    PRINTF("Done scanning.\n");
+
+    shutdown_bios();
+
+    if (dev == PCI_ANY_ID) return -1;
+    else return 0;
+
+}