[PATCH] powerpc: Add support for Xilinx ML403 reference design
authorGrant C. Likely <grant.likely@secretlab.ca>
Thu, 19 Jan 2006 08:13:37 +0000 (01:13 -0700)
committerPaul Mackerras <paulus@samba.org>
Tue, 7 Feb 2006 11:36:01 +0000 (22:36 +1100)
Includes fix for Xilinx silicon errata 213

Signed-off-by: Grant C. Likely <grant.likely@secretlab.ca>
Signed-off-by: Paul Mackerras <paulus@samba.org>
arch/ppc/boot/simple/Makefile
arch/ppc/boot/simple/embed_config.c
arch/ppc/boot/simple/head.S
arch/ppc/platforms/4xx/Kconfig
arch/ppc/platforms/4xx/Makefile
arch/ppc/platforms/4xx/xilinx_ml403.c [new file with mode: 0644]
arch/ppc/platforms/4xx/xilinx_ml403.h [new file with mode: 0644]
arch/ppc/platforms/4xx/xparameters/xparameters.h
include/asm-ppc/ibm4xx.h

index 9533f8de238ffc07471fbf3744abf29aca4f3d64..28be01b99c44b7837a73d135619ddca48f3eb394 100644 (file)
@@ -192,6 +192,7 @@ boot-$(CONFIG_8xx)          += embed_config.o
 boot-$(CONFIG_8260)            += embed_config.o
 boot-$(CONFIG_EP405)           += embed_config.o
 boot-$(CONFIG_XILINX_ML300)    += embed_config.o
+boot-$(CONFIG_XILINX_ML403)    += embed_config.o
 boot-$(CONFIG_BSEIP)           += iic.o
 boot-$(CONFIG_MBX)             += iic.o pci.o qspan_pci.o
 boot-$(CONFIG_MV64X60)         += misc-mv64x60.o
index df24202073bfef0cf6be5e2a6d27afb54d49dc90..3a51b1062940f5d2cf8ca26fcf460ce632201c5f 100644 (file)
@@ -745,7 +745,7 @@ embed_config(bd_t **bdp)
 }
 #endif /* WILLOW */
 
-#ifdef CONFIG_XILINX_ML300
+#if defined(CONFIG_XILINX_ML300) || defined(CONFIG_XILINX_ML403)
 void
 embed_config(bd_t ** bdp)
 {
@@ -782,7 +782,7 @@ embed_config(bd_t ** bdp)
        timebase_period_ns = 1000000000 / bd->bi_tbfreq;
        /* see bi_tbfreq definition in arch/ppc/platforms/4xx/xilinx_ml300.h */
 }
-#endif /* CONFIG_XILINX_ML300 */
+#endif /* CONFIG_XILINX_ML300 || CONFIG_XILINX_ML403 */
 
 #ifdef CONFIG_IBM_OPENBIOS
 /* This could possibly work for all treeboot roms.
index 5e4adc298bf9cdaf4aa12e655413a84fa1cdf190..119b9dc89587932bf0ab6c6e6420e73c62477217 100644 (file)
@@ -65,6 +65,13 @@ start_:
                         */
 #endif
 
+#if defined(CONFIG_XILINX_VIRTEX_4_FX)
+       /* PPC errata 213: only for Virtex-4 FX */
+       mfccr0  0
+       oris    0,0,0x50000000@h
+       mtccr0  0
+#endif
+
        mflr    r3      /* Save our actual starting address. */
 
        /* The following functions we call must not modify r3 or r4.....
index 057c7c2ab99de76fc087587b38400511cefb3380..174ddbc9758bb10fe33607f3c913c0c05915304f 100644 (file)
@@ -57,6 +57,10 @@ config XILINX_ML300
        help
          This option enables support for the Xilinx ML300 evaluation board.
 
+config XILINX_ML403
+       bool "Xilinx-ML403"
+       help
+         This option enables support for the Xilinx ML403 evaluation board.
 endchoice
 
 choice
@@ -208,9 +212,14 @@ config XILINX_VIRTEX_II_PRO
        depends on XILINX_ML300
        default y
 
+config XILINX_VIRTEX_4_FX
+       bool
+       depends on XILINX_ML403
+       default y
+
 config XILINX_VIRTEX
        bool
-       depends on XILINX_VIRTEX_II_PRO
+       depends on XILINX_VIRTEX_II_PRO || XILINX_VIRTEX_4_FX
        default y
 
 config STB03xxx
@@ -220,7 +229,7 @@ config STB03xxx
 
 config EMBEDDEDBOOT
        bool
-       depends on EP405 || XILINX_ML300
+       depends on EP405 || XILINX_ML300 || XILINX_ML403
        default y
 
 config IBM_OPENBIOS
index be4163c8afe71506814ed5a545cc8aba6a24019b..a04a0d0a0f5cd6b7670e0af81890a76b6e0bf2aa 100644 (file)
@@ -14,6 +14,7 @@ obj-$(CONFIG_REDWOOD_6)               += redwood6.o
 obj-$(CONFIG_SYCAMORE)         += sycamore.o
 obj-$(CONFIG_WALNUT)           += walnut.o
 obj-$(CONFIG_XILINX_ML300)     += xilinx_ml300.o
+obj-$(CONFIG_XILINX_ML403)     += xilinx_ml403.o
 
 obj-$(CONFIG_405GP)            += ibm405gp.o
 obj-$(CONFIG_REDWOOD_5)                += ibmstb4.o
@@ -27,3 +28,4 @@ obj-$(CONFIG_440SPE)          += ppc440spe.o
 obj-$(CONFIG_405EP)            += ibm405ep.o
 obj-$(CONFIG_405GPR)           += ibm405gpr.o
 obj-$(CONFIG_XILINX_VIRTEX)    += virtex.o
+
diff --git a/arch/ppc/platforms/4xx/xilinx_ml403.c b/arch/ppc/platforms/4xx/xilinx_ml403.c
new file mode 100644 (file)
index 0000000..4c0c7e4
--- /dev/null
@@ -0,0 +1,177 @@
+/*
+ * arch/ppc/platforms/4xx/xilinx_ml403.c
+ *
+ * Xilinx ML403 evaluation board initialization
+ *
+ * Author: Grant Likely <grant.likely@secretlab.ca>
+ *
+ * 2005 (c) Secret Lab Technologies Ltd.
+ * 2002-2004 (c) MontaVista Software, Inc.
+ *
+ * This file is licensed under the terms of the GNU General Public License
+ * version 2.  This program is licensed "as is" without any warranty of any
+ * kind, whether express or implied.
+ */
+
+#include <linux/config.h>
+#include <linux/init.h>
+#include <linux/irq.h>
+#include <linux/tty.h>
+#include <linux/serial.h>
+#include <linux/serial_core.h>
+#include <linux/serial_8250.h>
+#include <linux/serialP.h>
+#include <asm/io.h>
+#include <asm/machdep.h>
+#include <asm/ppc_sys.h>
+
+#include <syslib/gen550.h>
+#include <platforms/4xx/xparameters/xparameters.h>
+
+/*
+ * As an overview of how the following functions (platform_init,
+ * ml403_map_io, ml403_setup_arch and ml403_init_IRQ) fit into the
+ * kernel startup procedure, here's a call tree:
+ *
+ * start_here                                  arch/ppc/kernel/head_4xx.S
+ *  early_init                                 arch/ppc/kernel/setup.c
+ *  machine_init                               arch/ppc/kernel/setup.c
+ *    platform_init                            this file
+ *      ppc4xx_init                            arch/ppc/syslib/ppc4xx_setup.c
+ *        parse_bootinfo
+ *          find_bootinfo
+ *        "setup some default ppc_md pointers"
+ *  MMU_init                                   arch/ppc/mm/init.c
+ *    *ppc_md.setup_io_mappings == ml403_map_io        this file
+ *      ppc4xx_map_io                          arch/ppc/syslib/ppc4xx_setup.c
+ *  start_kernel                               init/main.c
+ *    setup_arch                               arch/ppc/kernel/setup.c
+ * #if defined(CONFIG_KGDB)
+ *      *ppc_md.kgdb_map_scc() == gen550_kgdb_map_scc
+ * #endif
+ *      *ppc_md.setup_arch == ml403_setup_arch this file
+ *        ppc4xx_setup_arch                    arch/ppc/syslib/ppc4xx_setup.c
+ *          ppc4xx_find_bridges                        arch/ppc/syslib/ppc405_pci.c
+ *    init_IRQ                                 arch/ppc/kernel/irq.c
+ *      *ppc_md.init_IRQ == ml403_init_IRQ     this file
+ *        ppc4xx_init_IRQ                      arch/ppc/syslib/ppc4xx_setup.c
+ *          ppc4xx_pic_init                    arch/ppc/syslib/xilinx_pic.c
+ */
+
+/* Board specifications structures */
+struct ppc_sys_spec *cur_ppc_sys_spec;
+struct ppc_sys_spec ppc_sys_specs[] = {
+       {
+               /* Only one entry, always assume the same design */
+               .ppc_sys_name   = "Xilinx ML403 Reference Design",
+               .mask           = 0x00000000,
+               .value          = 0x00000000,
+               .num_devices    = 1,
+               .device_list    = (enum ppc_sys_devices[])
+               {
+                       VIRTEX_UART,
+               },
+       },
+};
+
+#if defined(XPAR_POWER_0_POWERDOWN_BASEADDR)
+
+static volatile unsigned *powerdown_base =
+    (volatile unsigned *) XPAR_POWER_0_POWERDOWN_BASEADDR;
+
+static void
+xilinx_power_off(void)
+{
+       local_irq_disable();
+       out_be32(powerdown_base, XPAR_POWER_0_POWERDOWN_VALUE);
+       while (1) ;
+}
+#endif
+
+void __init
+ml403_map_io(void)
+{
+       ppc4xx_map_io();
+
+#if defined(XPAR_POWER_0_POWERDOWN_BASEADDR)
+       powerdown_base = ioremap((unsigned long) powerdown_base,
+                                XPAR_POWER_0_POWERDOWN_HIGHADDR -
+                                XPAR_POWER_0_POWERDOWN_BASEADDR + 1);
+#endif
+}
+
+/* Early serial support functions */
+static void __init
+ml403_early_serial_init(int num, struct plat_serial8250_port *pdata)
+{
+#if defined(CONFIG_SERIAL_TEXT_DEBUG) || defined(CONFIG_KGDB)
+       struct uart_port serial_req;
+
+       memset(&serial_req, 0, sizeof(serial_req));
+       serial_req.mapbase      = pdata->mapbase;
+       serial_req.membase      = pdata->membase;
+       serial_req.irq          = pdata->irq;
+       serial_req.uartclk      = pdata->uartclk;
+       serial_req.regshift     = pdata->regshift;
+       serial_req.iotype       = pdata->iotype;
+       serial_req.flags        = pdata->flags;
+       gen550_init(num, &serial_req);
+#endif
+}
+
+void __init
+ml403_early_serial_map(void)
+{
+#ifdef CONFIG_SERIAL_8250
+       struct plat_serial8250_port *pdata;
+       int i = 0;
+
+       pdata = (struct plat_serial8250_port *) ppc_sys_get_pdata(VIRTEX_UART);
+       while(pdata && pdata->flags)
+       {
+               pdata->membase = ioremap(pdata->mapbase, 0x100);
+               ml403_early_serial_init(i, pdata);
+               pdata++;
+               i++;
+       }
+#endif /* CONFIG_SERIAL_8250 */
+}
+
+void __init
+ml403_setup_arch(void)
+{
+       ml403_early_serial_map();
+       ppc4xx_setup_arch();    /* calls ppc4xx_find_bridges() */
+
+       /* Identify the system */
+       printk(KERN_INFO "Xilinx ML403 Reference System (Virtex-4 FX)\n");
+}
+
+/* Called after board_setup_irq from ppc4xx_init_IRQ(). */
+void __init
+ml403_init_irq(void)
+{
+       ppc4xx_init_IRQ();
+}
+
+void __init
+platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
+             unsigned long r6, unsigned long r7)
+{
+       ppc4xx_init(r3, r4, r5, r6, r7);
+
+       identify_ppc_sys_by_id(mfspr(SPRN_PVR));
+
+       ppc_md.setup_arch = ml403_setup_arch;
+       ppc_md.setup_io_mappings = ml403_map_io;
+       ppc_md.init_IRQ = ml403_init_irq;
+
+#if defined(XPAR_POWER_0_POWERDOWN_BASEADDR)
+       ppc_md.power_off = xilinx_power_off;
+#endif
+
+#ifdef CONFIG_KGDB
+       ppc_md.early_serial_map = ml403_early_serial_map;
+#endif
+}
+
diff --git a/arch/ppc/platforms/4xx/xilinx_ml403.h b/arch/ppc/platforms/4xx/xilinx_ml403.h
new file mode 100644 (file)
index 0000000..4735969
--- /dev/null
@@ -0,0 +1,49 @@
+/*
+ * arch/ppc/platforms/4xx/xilinx_ml403.h
+ *
+ * Include file that defines the Xilinx ML403 reference design
+ *
+ * Author: Grant Likely <grant.likely@secretlab.ca>
+ *
+ * 2005 (c) Secret Lab Technologies Ltd.
+ * 2002-2004 (c) MontaVista Software, Inc.
+ *
+ * This file is licensed under the terms of the GNU General Public License
+ * version 2.  This program is licensed "as is" without any warranty of any
+ * kind, whether express or implied.
+ */
+
+#ifdef __KERNEL__
+#ifndef __ASM_XILINX_ML403_H__
+#define __ASM_XILINX_ML403_H__
+
+/* ML403 has a Xilinx Virtex-4 FPGA with a PPC405 hard core */
+#include <platforms/4xx/virtex.h>
+
+#ifndef __ASSEMBLY__
+
+#include <linux/types.h>
+
+typedef struct board_info {
+       unsigned int     bi_memsize;            /* DRAM installed, in bytes */
+       unsigned char    bi_enetaddr[6];        /* Local Ethernet MAC address */
+       unsigned int     bi_intfreq;            /* Processor speed, in Hz */
+       unsigned int     bi_busfreq;            /* PLB Bus speed, in Hz */
+       unsigned int     bi_pci_busfreq;        /* PCI Bus speed, in Hz */
+} bd_t;
+
+/* Some 4xx parts use a different timebase frequency from the internal clock.
+*/
+#define bi_tbfreq bi_intfreq
+
+#endif /* !__ASSEMBLY__ */
+
+/* We don't need anything mapped.  Size of zero will accomplish that. */
+#define PPC4xx_ONB_IO_PADDR    0u
+#define PPC4xx_ONB_IO_VADDR    0u
+#define PPC4xx_ONB_IO_SIZE     0u
+
+#define PPC4xx_MACHINE_NAME "Xilinx ML403 Reference Design"
+
+#endif /* __ASM_XILINX_ML403_H__ */
+#endif /* __KERNEL__ */
index 7b7304379dd2fbdd577c8aa6b649889bf0f8c59c..4cf21f25635690f20f2fa2dc7043630f03b93988 100644 (file)
@@ -16,6 +16,8 @@
 
 #if defined(CONFIG_XILINX_ML300)
   #include "xparameters_ml300.h"
+#elif defined(CONFIG_XILINX_ML403)
+  #include "xparameters_ml403.h"
 #else
   /* Add other board xparameter includes here before the #else */
   #error No xparameters_*.h file included
index 6c28ae7807f4fe20add48c793a0d84397e61bf50..38f99710752b1f041b29a3a40acea8ecc639d529 100644 (file)
 #include <platforms/4xx/xilinx_ml300.h>
 #endif
 
+#if defined(CONFIG_XILINX_ML403)
+#include <platforms/4xx/xilinx_ml403.h>
+#endif
+
 #ifndef __ASSEMBLY__
 
 #ifdef CONFIG_40x