SPARC/LEON3: Added AMBA Bus Plug&Play information print command (ambapp). It can print available cores (type: AHB Master, AHB Slave, APB Slave), their address ranges, IRQ number and version.

Signed-off-by: Daniel Hellstrom <daniel@gaisler.com>

common/Makefile

@@ -32,6 +32,7 @@ COBJS-y += ACEX1K.o
 COBJS-y += altera.o
 COBJS-y += bedbug.o
 COBJS-y += circbuf.o
+COBJS-$(CONFIG_CMD_AMBAPP) += cmd_ambapp.o
 COBJS-y += cmd_autoscript.o
 COBJS-$(CONFIG_CMD_BDI) += cmd_bdinfo.o
 COBJS-$(CONFIG_CMD_BEDBUG) += cmd_bedbug.o

common/cmd_ambapp.c

@@ -0,0 +1,278 @@
+/*
+ * (C) Copyright 2007
+ * Daniel Hellstrom, Gaisler Research, daniel@gaisler.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
+ */
+
+/*
+ * AMBA Plug&Play information list command
+ *
+ */
+#include <common.h>
+#include <command.h>
+#include <ambapp.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+/* We put these variables into .data section so that they are zero
+ * when entering the AMBA Plug & Play routines (in cpu/cpu/ambapp.c)
+ * the first time. BSS is not garantueed to be zero since BSS 
+ * hasn't been cleared the first times entering the CPU AMBA functions.
+ *
+ * The AMBA PnP routines call these functions if ambapp_???_print is set.
+ * 
+ */
+int ambapp_apb_print __attribute__ ((section(".data"))) = 0;
+int ambapp_ahb_print __attribute__ ((section(".data"))) = 0;
+
+typedef struct {
+	int device_id;
+	char *name;
+} ambapp_device_name;
+
+static ambapp_device_name gaisler_devices[] = {
+	{GAISLER_LEON3, "GAISLER_LEON3"},
+	{GAISLER_LEON3DSU, "GAISLER_LEON3DSU"},
+	{GAISLER_ETHAHB, "GAISLER_ETHAHB"},
+	{GAISLER_ETHMAC, "GAISLER_ETHMAC"},
+	{GAISLER_APBMST, "GAISLER_APBMST"},
+	{GAISLER_AHBUART, "GAISLER_AHBUART"},
+	{GAISLER_SRCTRL, "GAISLER_SRCTRL"},
+	{GAISLER_SDCTRL, "GAISLER_SDCTRL"},
+	{GAISLER_APBUART, "GAISLER_APBUART"},
+	{GAISLER_IRQMP, "GAISLER_IRQMP"},
+	{GAISLER_AHBRAM, "GAISLER_AHBRAM"},
+	{GAISLER_GPTIMER, "GAISLER_GPTIMER"},
+	{GAISLER_PCITRG, "GAISLER_PCITRG"},
+	{GAISLER_PCISBRG, "GAISLER_PCISBRG"},
+	{GAISLER_PCIFBRG, "GAISLER_PCIFBRG"},
+	{GAISLER_PCITRACE, "GAISLER_PCITRACE"},
+	{GAISLER_AHBTRACE, "GAISLER_AHBTRACE"},
+	{GAISLER_ETHDSU, "GAISLER_ETHDSU"},
+	{GAISLER_PIOPORT, "GAISLER_PIOPORT"},
+	{GAISLER_AHBJTAG, "GAISLER_AHBJTAG"},
+	{GAISLER_ATACTRL, "GAISLER_ATACTRL"},
+	{GAISLER_VGA, "GAISLER_VGA"},
+	{GAISLER_KBD, "GAISLER_KBD"},
+	{GAISLER_L2TIME, "GAISLER_L2TIME"},
+	{GAISLER_L2C, "GAISLER_L2C"},
+	{GAISLER_PLUGPLAY, "GAISLER_PLUGPLAY"},
+	{GAISLER_SPW, "GAISLER_SPW"},
+	{GAISLER_SPW2, "GAISLER_SPW2"},
+	{GAISLER_EHCI, "GAISLER_EHCI"},
+	{GAISLER_UHCI, "GAISLER_UHCI"},
+	{GAISLER_AHBSTAT, "GAISLER_AHBSTAT"},
+	{GAISLER_DDR2SPA, "GAISLER_DDR2SPA"},
+	{GAISLER_DDRSPA, "GAISLER_DDRSPA"},
+	{0, NULL}
+};
+
+static ambapp_device_name esa_devices[] = {
+	{ESA_LEON2, "ESA_LEON2"},
+	{ESA_MCTRL, "ESA_MCTRL"},
+	{0, NULL}
+};
+
+static ambapp_device_name opencores_devices[] = {
+	{OPENCORES_PCIBR, "OPENCORES_PCIBR"},
+	{OPENCORES_ETHMAC, "OPENCORES_ETHMAC"},
+	{0, NULL}
+};
+
+typedef struct {
+	unsigned int vendor_id;
+	char *name;
+	ambapp_device_name *devices;
+} ambapp_vendor_devnames;
+
+static ambapp_vendor_devnames vendors[] = {
+	{VENDOR_GAISLER, "VENDOR_GAISLER", gaisler_devices},
+	{VENDOR_ESA, "VENDOR_ESA", esa_devices},
+	{VENDOR_OPENCORES, "VENDOR_OPENCORES", opencores_devices},
+	{0, NULL, 0}
+};
+
+static char *ambapp_get_devname(ambapp_device_name * devs, int id)
+{
+	if (!devs)
+		return NULL;
+
+	while (devs->device_id > 0) {
+		if (devs->device_id == id)
+			return devs->name;
+		devs++;
+	}
+	return NULL;
+}
+
+char *ambapp_device_id2str(int vendor, int id)
+{
+	ambapp_vendor_devnames *ven = &vendors[0];
+
+	while (ven->vendor_id > 0) {
+		if (ven->vendor_id == vendor) {
+			return ambapp_get_devname(ven->devices, id);
+		}
+		ven++;
+	}
+	return NULL;
+}
+
+char *ambapp_vendor_id2str(int vendor)
+{
+	ambapp_vendor_devnames *ven = &vendors[0];
+
+	while (ven->vendor_id > 0) {
+		if (ven->vendor_id == vendor) {
+			return ven->name;
+		}
+		ven++;
+	}
+	return NULL;
+}
+
+static char *unknown = "unknown";
+
+/* Print one APB device */
+void ambapp_print_apb(apbctrl_pp_dev * apb, ambapp_ahbdev * apbmst, int index)
+{
+	char *dev_str, *ven_str;
+	int irq, ver, vendor, deviceid;
+	unsigned int address, apbmst_base, mask;
+
+	vendor = amba_vendor(apb->conf);
+	deviceid = amba_device(apb->conf);
+	irq = amba_irq(apb->conf);
+	ver = amba_ver(apb->conf);
+	apbmst_base = apbmst->address[0] & LEON3_IO_AREA;
+	address = (apbmst_base | (((apb->bar & 0xfff00000) >> 12))) &
+	    (((apb->bar & 0x0000fff0) << 4) | 0xfff00000);
+
+	mask = amba_membar_mask(apb->bar) << 8;
+	mask = ((~mask) & 0x000fffff) + 1;
+
+	ven_str = ambapp_vendor_id2str(vendor);
+	if (!ven_str) {
+		ven_str = unknown;
+		dev_str = unknown;
+	} else {
+		dev_str = ambapp_device_id2str(vendor, deviceid);
+		if (!dev_str)
+			dev_str = unknown;
+	}
+
+	printf("0x%02x:0x%02x:0x%02x: %s  %s\n"
+	       "   apb: 0x%08x - 0x%08x\n"
+	       "   irq: %-2d (ver: %-2d)\n",
+	       index, vendor, deviceid, ven_str, dev_str, address,
+	       address + mask, irq, ver);
+}
+
+void ambapp_print_ahb(ahbctrl_pp_dev * ahb, int index)
+{
+	char *dev_str, *ven_str;
+	int irq, ver, vendor, deviceid;
+	unsigned int addr, mask;
+	int j;
+
+	vendor = amba_vendor(ahb->conf);
+	deviceid = amba_device(ahb->conf);
+	irq = amba_irq(ahb->conf);
+	ver = amba_ver(ahb->conf);
+
+	ven_str = ambapp_vendor_id2str(vendor);
+	if (!ven_str) {
+		ven_str = unknown;
+		dev_str = unknown;
+	} else {
+		dev_str = ambapp_device_id2str(vendor, deviceid);
+		if (!dev_str)
+			dev_str = unknown;
+	}
+
+	printf("0x%02x:0x%02x:0x%02x: %s  %s\n",
+	       index, vendor, deviceid, ven_str, dev_str);
+
+	for (j = 0; j < 4; j++) {
+		addr = amba_membar_start(ahb->bars[j]);
+		if (amba_membar_type(ahb->bars[j]) == 0)
+			continue;
+		if (amba_membar_type(ahb->bars[j]) == AMBA_TYPE_AHBIO)
+			addr = AMBA_TYPE_AHBIO_ADDR(addr);
+		mask = amba_membar_mask(ahb->bars[j]) << 20;
+		printf("   mem: 0x%08x - 0x%08x\n", addr, addr + ((~mask) + 1));
+	}
+
+	printf("   irq: %-2d (ver: %d)\n", irq, ver);
+}
+
+int do_ambapp_print(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
+{
+
+	/* Print AHB Masters */
+	puts("--------- AHB Masters ---------\n");
+	ambapp_apb_print = 0;
+	ambapp_ahb_print = 1;
+	ambapp_ahbmst_count(99, 99);	/* Get vendor&device 99 = nonexistent... */
+
+	/* Print AHB Slaves */
+	puts("--------- AHB Slaves  ---------\n");
+	ambapp_ahbslv_count(99, 99);	/* Get vendor&device 99 = nonexistent... */
+
+	/* Print APB Slaves */
+	puts("--------- APB Slaves  ---------\n");
+	ambapp_apb_print = 1;
+	ambapp_ahb_print = 0;
+	ambapp_apb_count(99, 99);	/* Get vendor&device 99 = nonexistent... */
+
+	/* Reset, no futher printing */
+	ambapp_apb_print = 0;
+	ambapp_ahb_print = 0;
+	puts("\n");
+	return 0;
+}
+
+int ambapp_init_reloc(void)
+{
+	ambapp_vendor_devnames *vend = vendors;
+	ambapp_device_name *dev;
+
+	while (vend->vendor_id && vend->name) {
+		vend->name = (char *)((unsigned int)vend->name + gd->reloc_off);
+		vend->devices =
+		    (ambapp_device_name *) ((unsigned int)vend->devices +
+					    gd->reloc_off);;
+		dev = vend->devices;
+		vend++;
+		if (!dev)
+			continue;
+		while (dev->device_id && dev->name) {
+			dev->name =
+			    (char *)((unsigned int)dev->name + gd->reloc_off);;
+			dev++;
+		}
+	}
+	return 0;
+}
+
+U_BOOT_CMD(ambapp, 1, 1, do_ambapp_print,
+	   "ambapp  - list AMBA Plug&Play information\n",
+	   "ambapp\n"
+	   "    - lists AMBA (AHB & APB) Plug&Play devices present on the system\n");

cpu/leon3/ambapp.c

@@ -28,6 +28,14 @@
 #include <command.h>
 #include <ambapp.h>
 
+#if defined(CONFIG_CMD_AMBAPP)
+extern void ambapp_print_apb(apbctrl_pp_dev * apb,
+			     ambapp_ahbdev * apbmst, int index);
+extern void ambapp_print_ahb(ahbctrl_pp_dev * ahb, int index);
+extern int ambapp_apb_print;
+extern int ambapp_ahb_print;
+#endif
+
 static int ambapp_apb_scan(unsigned int vendor,	/* Plug&Play Vendor ID */
 			   unsigned int driver,	/* Plug&Play Device ID */
 			   ambapp_apbdev * dev,	/* Result(s) is placed here */
@@ -58,6 +66,12 @@ static int ambapp_apb_scan(unsigned int vendor,	/* Plug&Play Vendor ID */
 	apb = (apbctrl_pp_dev *) (apbmst_base | LEON3_CONF_AREA);
 
 	for (i = 0; i < LEON3_APB_SLAVES; i++) {
+#if defined(CONFIG_CMD_AMBAPP)
+		if (ambapp_apb_print && amba_vendor(apb->conf)
+		    && amba_device(apb->conf)) {
+			ambapp_print_apb(apb, &apbmst, i);
+		}
+#endif
 		if ((amba_vendor(apb->conf) == vendor) &&
 		    (amba_device(apb->conf) == driver) && ((index < 0)
 							   || (index-- == 0))) {
@@ -192,6 +206,12 @@ static int ambapp_ahb_scan(unsigned int vendor,	/* Plug&Play Vendor ID */
 	}
 
 	for (i = 0; i < max_pp_devs; i++) {
+#if defined(CONFIG_CMD_AMBAPP)
+		if (ambapp_ahb_print && amba_vendor(ahb->conf) &&
+		    amba_device(ahb->conf)) {
+			ambapp_print_ahb(ahb, i);
+		}
+#endif
 		if ((amba_vendor(ahb->conf) == vendor) &&
 		    (amba_device(ahb->conf) == driver) &&
 		    ((index < 0) || (index-- == 0))) {

include/ambapp.h

@@ -140,6 +140,20 @@
 
 #ifndef __ASSEMBLER__
 
+#ifdef CONFIG_CMD_AMBAPP
+
+/* AMBA Plug&Play relocation & initialization */
+int ambapp_init_reloc(void);
+
+/* AMBA Plug&Play Name of Vendors and devices */
+
+/* Return name of device */
+char *ambapp_device_id2str(int vendor, int id);
+
+/* Return name of vendor */
+char *ambapp_vendor_id2str(int vendor);
+#endif
+
 /*
  *  Types and structure used for AMBA Plug & Play bus scanning
  */

include/config_cmd_all.h

@@ -13,6 +13,7 @@
  * Alphabetical list of all possible commands.
  */
 
+#define CONFIG_CMD_AMBAPP	/* AMBA Plug & Play Bus print utility */
 #define CONFIG_CMD_ASKENV	/* ask for env variable		*/
 #define CONFIG_CMD_AUTOSCRIPT	/* Autoscript Support		*/
 #define CONFIG_CMD_BDI	       	/* bdinfo			*/