Add support for Xilinx ML403 reference design Signed-off-by: Grant C. Likely <grant.likely at secretlab.ca>
--- arch/ppc/boot/simple/embed_config.c | 41 +++++ arch/ppc/platforms/4xx/Kconfig | 8 + arch/ppc/platforms/4xx/Makefile | 2 arch/ppc/platforms/4xx/xilinx_ml403.c | 177 ++++++++++++++++++++++ arch/ppc/platforms/4xx/xilinx_ml403.h | 49 ++++++ arch/ppc/platforms/4xx/xparameters/xparameters.h | 13 ++ include/asm-ppc/ibm4xx.h | 4 7 files changed, 291 insertions(+), 3 deletions(-) create mode 100644 arch/ppc/platforms/4xx/xilinx_ml403.c create mode 100644 arch/ppc/platforms/4xx/xilinx_ml403.h 03eaaad1784a4094cecd57f3aafbfe8832742505 diff --git a/arch/ppc/boot/simple/embed_config.c b/arch/ppc/boot/simple/embed_config.c index df24202..0172eb0 100644 --- a/arch/ppc/boot/simple/embed_config.c +++ b/arch/ppc/boot/simple/embed_config.c @@ -745,7 +745,7 @@ embed_config(bd_t **bdp) } #endif /* WILLOW */ -#ifdef CONFIG_XILINX_ML300 +#if defined(CONFIG_XILINX_ML300) void embed_config(bd_t ** bdp) { @@ -784,6 +784,45 @@ embed_config(bd_t ** bdp) } #endif /* CONFIG_XILINX_ML300 */ +#if defined(CONFIG_XILINX_ML403) +void +embed_config(bd_t ** bdp) +{ + static const unsigned long line_size = 32; + static const unsigned long congruence_classes = 256; + unsigned long addr; + unsigned long dccr; + bd_t *bd; + + /* + * Invalidate the data cache if the data cache is turned off. + * - The 405 core does not invalidate the data cache on power-up + * or reset but does turn off the data cache. We cannot assume + * that the cache contents are valid. + * - If the data cache is turned on this must have been done by + * a bootloader and we assume that the cache contents are + * valid. + */ + __asm__("mfdccr %0": "=r" (dccr)); + if (dccr == 0) { + for (addr = 0; + addr < (congruence_classes * line_size); + addr += line_size) { + __asm__("dccci 0,%0": :"b"(addr)); + } + } + + bd = &bdinfo; + *bdp = bd; + bd->bi_memsize = XPAR_PLB_DDR_0_MEM0_HIGHADDR + 1; + bd->bi_intfreq = XPAR_CPU_PPC405_CORE_CLOCK_FREQ_HZ; + bd->bi_busfreq = XPAR_XUARTNS550_CLOCK_HZ; + bd->bi_pci_busfreq = 0; + timebase_period_ns = 1000000000 / bd->bi_tbfreq; + /* see bi_tbfreq definition in arch/ppc/platforms/4xx/xilinx_ml300.h */ +} +#endif /* CONFIG_XILINX_ML403 */ + #ifdef CONFIG_IBM_OPENBIOS /* This could possibly work for all treeboot roms. */ diff --git a/arch/ppc/platforms/4xx/Kconfig b/arch/ppc/platforms/4xx/Kconfig index 266280c..f7a5848 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 @@ -194,7 +198,7 @@ config 405GPR config XILINX_VIRTEX bool - depends on XILINX_ML300 + depends on XILINX_ML300 || XILINX_ML403 default y config STB03xxx @@ -204,7 +208,7 @@ 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 4db749d..9dd5629 100644 --- a/arch/ppc/platforms/4xx/Makefile +++ b/arch/ppc/platforms/4xx/Makefile @@ -13,6 +13,7 @@ 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-$(CONFIG_REDWOOD_5) += ibmstb4.o @@ -25,3 +26,4 @@ obj-$(CONFIG_440SP) += ibm440sp.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 0000000..4c0c7e4 --- /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 at 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 0000000..4735969 --- /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 at 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 26ee822..22b0088 100644 --- a/arch/ppc/platforms/4xx/xparameters/xparameters.h +++ b/arch/ppc/platforms/4xx/xparameters/xparameters.h @@ -32,6 +32,19 @@ #define VIRTEX_INTC_BASEADDR XPAR_DCR_INTC_0_BASEADDR #define VIRTEX_INTC_KIND_OF_INTR XPAR_DCR_INTC_0_KIND_OF_INTR +#elif defined(CONFIG_XILINX_ML403) + #include "xparameters_ml403.h" + + /* Serial ports */ + #define VIRTEX_UART_0_BASEADDR (XPAR_OPB_UART16550_0_BASEADDR + 0x1000) + #define VIRTEX_UART_0_IRQ XPAR_OPB_INTC_0_OPB_UART16550_0_IP2INTC_IRPT_INTR + #define VIRTEX_UART_0_CLK XPAR_XUARTNS550_CLOCK_HZ + + /* Values for setting up interrupt controller */ + #define VIRTEX_XINTC_USE_DCR XPAR_XINTC_USE_DCR + #define VIRTEX_INTC_BASEADDR XPAR_OPB_INTC_0_BASEADDR + #define VIRTEX_INTC_KIND_OF_INTR XPAR_OPB_INTC_0_KIND_OF_INTR + #else /* Add other board xparameter includes here before the #else */ #error No *_xparameters.h file included diff --git a/include/asm-ppc/ibm4xx.h b/include/asm-ppc/ibm4xx.h index e992369..c49c462 100644 --- a/include/asm-ppc/ibm4xx.h +++ b/include/asm-ppc/ibm4xx.h @@ -51,6 +51,10 @@ #include <platforms/4xx/xilinx_ml300.h> #endif +#if defined(CONFIG_XILINX_ML403) +#include <platforms/4xx/xilinx_ml403.h> +#endif + #ifndef __ASSEMBLY__ #ifdef CONFIG_40x -- 1.0.6-g58e3