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authorGrant C. Likely <grant.likely@secretlab.ca>2006-01-19 01:13:37 -0700
committerPaul Mackerras <paulus@samba.org>2006-02-07 22:36:01 +1100
commit909aeca664dd1fe55111dc4ec25c1bebe91674a2 (patch)
treeb1b0737582e2348d2b5c728db6b280df90bc5df1 /arch/ppc/platforms
parentb58b5aa51c78079fa4f652cd42e7b496a1d5411a (diff)
downloadlinux-linaro-stable-909aeca664dd1fe55111dc4ec25c1bebe91674a2.tar.gz
[PATCH] powerpc: Add support for Xilinx ML403 reference design
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>
Diffstat (limited to 'arch/ppc/platforms')
-rw-r--r--arch/ppc/platforms/4xx/Kconfig13
-rw-r--r--arch/ppc/platforms/4xx/Makefile2
-rw-r--r--arch/ppc/platforms/4xx/xilinx_ml403.c177
-rw-r--r--arch/ppc/platforms/4xx/xilinx_ml403.h49
-rw-r--r--arch/ppc/platforms/4xx/xparameters/xparameters.h2
5 files changed, 241 insertions, 2 deletions
diff --git a/arch/ppc/platforms/4xx/Kconfig b/arch/ppc/platforms/4xx/Kconfig
index 057c7c2ab99d..174ddbc9758b 100644
--- a/arch/ppc/platforms/4xx/Kconfig
+++ b/arch/ppc/platforms/4xx/Kconfig
@@ -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
diff --git a/arch/ppc/platforms/4xx/Makefile b/arch/ppc/platforms/4xx/Makefile
index be4163c8afe7..a04a0d0a0f5c 100644
--- a/arch/ppc/platforms/4xx/Makefile
+++ b/arch/ppc/platforms/4xx/Makefile
@@ -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
index 000000000000..4c0c7e4c1114
--- /dev/null
+++ b/arch/ppc/platforms/4xx/xilinx_ml403.c
@@ -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
index 000000000000..473596959902
--- /dev/null
+++ b/arch/ppc/platforms/4xx/xilinx_ml403.h
@@ -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__ */
diff --git a/arch/ppc/platforms/4xx/xparameters/xparameters.h b/arch/ppc/platforms/4xx/xparameters/xparameters.h
index 7b7304379dd2..4cf21f256356 100644
--- a/arch/ppc/platforms/4xx/xparameters/xparameters.h
+++ b/arch/ppc/platforms/4xx/xparameters/xparameters.h
@@ -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