2007-07-27 00:49:11 +09:00
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/*
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* (C) Copyright 2000-2005
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* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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*
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* (C) Copyright 2005-2007
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* Beijing UD Technology Co., Ltd., taihusupport@amcc.com
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#include <common.h>
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#include <command.h>
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#include <asm/processor.h>
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#include <asm/io.h>
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#include <spi.h>
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2008-09-01 12:37:00 +09:00
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#include <netdev.h>
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2007-07-27 00:49:11 +09:00
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#include <asm/gpio.h>
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extern int lcd_init(void);
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/*
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* board_early_init_f
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*/
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int board_early_init_f(void)
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{
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lcd_init();
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mtdcr(uicsr, 0xFFFFFFFF); /* clear all ints */
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mtdcr(uicer, 0x00000000); /* disable all ints */
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mtdcr(uiccr, 0x00000000);
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mtdcr(uicpr, 0xFFFF7F00); /* set int polarities */
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mtdcr(uictr, 0x00000000); /* set int trigger levels */
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mtdcr(uicsr, 0xFFFFFFFF); /* clear all ints */
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mtdcr(uicvcr, 0x00000001); /* set vect base=0,INT0 highest priority */
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mtebc(pb3ap, CFG_EBC_PB3AP); /* memory bank 3 (CPLD_LCM) initialization */
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mtebc(pb3cr, CFG_EBC_PB3CR);
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2007-08-14 21:44:41 +09:00
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/*
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* Configure CPC0_PCI to enable PerWE as output
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* and enable the internal PCI arbiter
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*/
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mtdcr(cpc0_pci, CPC0_PCI_SPE | CPC0_PCI_HOST_CFG_EN | CPC0_PCI_ARBIT_EN);
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2007-07-27 00:49:11 +09:00
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return 0;
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}
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/*
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* Check Board Identity:
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*/
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int checkboard(void)
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{
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char *s = getenv("serial#");
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puts("Board: Taihu - AMCC PPC405EP Evaluation Board");
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if (s != NULL) {
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puts(", serial# ");
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puts(s);
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}
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putc('\n');
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return 0;
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}
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/*************************************************************************
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2008-06-10 06:03:40 +09:00
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* phys_size_t initdram
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2007-07-27 00:49:11 +09:00
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*
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************************************************************************/
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2008-06-10 06:03:40 +09:00
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phys_size_t initdram(int board)
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2007-07-27 00:49:11 +09:00
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{
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return CFG_SDRAM_SIZE_PER_BANK * CFG_SDRAM_BANKS; /* 128Mbytes */
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}
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static int do_sw_stat(cmd_tbl_t* cmd_tp, int flags, int argc, char *argv[])
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{
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char stat;
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int i;
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stat = in_8((u8 *) CPLD_REG0_ADDR);
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printf("SW2 status: ");
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for (i=0; i<4; i++) /* 4-position */
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printf("%d:%s ", i, stat & (0x08 >> i)?"on":"off");
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printf("\n");
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return 0;
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}
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U_BOOT_CMD (
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sw2_stat, 1, 1, do_sw_stat,
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"sw2_stat - show status of switch 2\n",
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NULL
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);
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static int do_led_ctl(cmd_tbl_t* cmd_tp, int flags, int argc, char *argv[])
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{
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int led_no;
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if (argc != 3) {
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printf("%s", cmd_tp->usage);
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return -1;
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}
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led_no = simple_strtoul(argv[1], NULL, 16);
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if (led_no != 1 && led_no != 2) {
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printf("%s", cmd_tp->usage);
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return -1;
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}
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if (strcmp(argv[2],"off") == 0x0) {
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if (led_no == 1)
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gpio_write_bit(30, 1);
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else
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gpio_write_bit(31, 1);
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} else if (strcmp(argv[2],"on") == 0x0) {
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if (led_no == 1)
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gpio_write_bit(30, 0);
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else
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gpio_write_bit(31, 0);
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} else {
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printf("%s", cmd_tp->usage);
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return -1;
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}
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return 0;
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}
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U_BOOT_CMD (
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led_ctl, 3, 1, do_led_ctl,
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"led_ctl - make led 1 or 2 on or off\n",
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"<led_no> <on/off> - make led <led_no> on/off,\n"
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"\tled_no is 1 or 2\t"
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);
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#define SPI_CS_GPIO0 0
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#define SPI_SCLK_GPIO14 14
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#define SPI_DIN_GPIO15 15
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#define SPI_DOUT_GPIO16 16
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void spi_scl(int bit)
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{
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gpio_write_bit(SPI_SCLK_GPIO14, bit);
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}
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void spi_sda(int bit)
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{
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gpio_write_bit(SPI_DOUT_GPIO16, bit);
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}
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unsigned char spi_read(void)
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{
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2008-03-06 05:38:12 +09:00
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return (unsigned char)gpio_read_in_bit(SPI_DIN_GPIO15);
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2007-07-27 00:49:11 +09:00
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}
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SPI API improvements
This patch gets rid of the spi_chipsel table and adds a handful of new
functions that makes the SPI layer cleaner and more flexible.
Instead of the spi_chipsel table, each board that wants to use SPI
gets to implement three hooks:
* spi_cs_activate(): Activates the chipselect for a given slave
* spi_cs_deactivate(): Deactivates the chipselect for a given slave
* spi_cs_is_valid(): Determines if the given bus/chipselect
combination can be activated.
Not all drivers may need those extra functions however. If that's the
case, the board code may just leave them out (assuming they know what
the driver needs) or rely on the linker to strip them out (assuming
--gc-sections is being used.)
To set up communication parameters for a given slave, the driver needs
to call spi_setup_slave(). This returns a pointer to an opaque
spi_slave struct which must be passed as a parameter to subsequent SPI
calls. This struct can be freed by calling spi_free_slave(), but most
driver probably don't want to do this.
Before starting one or more SPI transfers, the driver must call
spi_claim_bus() to gain exclusive access to the SPI bus and initialize
the hardware. When all transfers are done, the driver must call
spi_release_bus() to make the bus available to others, and possibly
shut down the SPI controller hardware.
spi_xfer() behaves mostly the same as before, but it now takes a
spi_slave parameter instead of a spi_chipsel function pointer. It also
got a new parameter, flags, which is used to specify chip select
behaviour. This may be extended with other flags in the future.
This patch has been build-tested on all powerpc and arm boards
involved. I have not tested NIOS since I don't have a toolchain for it
installed, so I expect some breakage there even though I've tried
fixing up everything I could find by visual inspection.
I have run-time tested this on AVR32 ATNGW100 using the atmel_spi and
DataFlash drivers posted as a follow-up. I'd like some help testing
other boards that use the existing SPI API.
But most of all, I'd like some comments on the new API. Is this stuff
usable for everyone? If not, why?
Changed in v4:
- Build fixes for various boards, drivers and commands
- Provide common struct spi_slave definition that can be extended by
drivers
- Pass a struct spi_slave * to spi_cs_activate and spi_cs_deactivate
- Make default bus and mode build-time configurable
- Override default SPI bus ID and mode on mx32ads and imx31_litekit.
Changed in v3:
- Add opaque struct spi_slave for controller-specific data associated
with a slave.
- Add spi_claim_bus() and spi_release_bus()
- Add spi_free_slave()
- spi_setup() is now called spi_setup_slave() and returns a
struct spi_slave
- soft_spi now supports four SPI modes (CPOL|CPHA)
- Add bus parameter to spi_setup_slave()
- Convert the new i.MX32 SPI driver
- Convert the new MC13783 RTC driver
Changed in v2:
- Convert the mpc8xxx_spi driver and the mpc8349emds board to the
new API.
Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
Tested-by: Guennadi Liakhovetski <lg@denx.de>
2008-05-16 18:10:31 +09:00
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int spi_cs_is_valid(unsigned int bus, unsigned int cs)
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2007-07-27 00:49:11 +09:00
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{
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SPI API improvements
This patch gets rid of the spi_chipsel table and adds a handful of new
functions that makes the SPI layer cleaner and more flexible.
Instead of the spi_chipsel table, each board that wants to use SPI
gets to implement three hooks:
* spi_cs_activate(): Activates the chipselect for a given slave
* spi_cs_deactivate(): Deactivates the chipselect for a given slave
* spi_cs_is_valid(): Determines if the given bus/chipselect
combination can be activated.
Not all drivers may need those extra functions however. If that's the
case, the board code may just leave them out (assuming they know what
the driver needs) or rely on the linker to strip them out (assuming
--gc-sections is being used.)
To set up communication parameters for a given slave, the driver needs
to call spi_setup_slave(). This returns a pointer to an opaque
spi_slave struct which must be passed as a parameter to subsequent SPI
calls. This struct can be freed by calling spi_free_slave(), but most
driver probably don't want to do this.
Before starting one or more SPI transfers, the driver must call
spi_claim_bus() to gain exclusive access to the SPI bus and initialize
the hardware. When all transfers are done, the driver must call
spi_release_bus() to make the bus available to others, and possibly
shut down the SPI controller hardware.
spi_xfer() behaves mostly the same as before, but it now takes a
spi_slave parameter instead of a spi_chipsel function pointer. It also
got a new parameter, flags, which is used to specify chip select
behaviour. This may be extended with other flags in the future.
This patch has been build-tested on all powerpc and arm boards
involved. I have not tested NIOS since I don't have a toolchain for it
installed, so I expect some breakage there even though I've tried
fixing up everything I could find by visual inspection.
I have run-time tested this on AVR32 ATNGW100 using the atmel_spi and
DataFlash drivers posted as a follow-up. I'd like some help testing
other boards that use the existing SPI API.
But most of all, I'd like some comments on the new API. Is this stuff
usable for everyone? If not, why?
Changed in v4:
- Build fixes for various boards, drivers and commands
- Provide common struct spi_slave definition that can be extended by
drivers
- Pass a struct spi_slave * to spi_cs_activate and spi_cs_deactivate
- Make default bus and mode build-time configurable
- Override default SPI bus ID and mode on mx32ads and imx31_litekit.
Changed in v3:
- Add opaque struct spi_slave for controller-specific data associated
with a slave.
- Add spi_claim_bus() and spi_release_bus()
- Add spi_free_slave()
- spi_setup() is now called spi_setup_slave() and returns a
struct spi_slave
- soft_spi now supports four SPI modes (CPOL|CPHA)
- Add bus parameter to spi_setup_slave()
- Convert the new i.MX32 SPI driver
- Convert the new MC13783 RTC driver
Changed in v2:
- Convert the mpc8xxx_spi driver and the mpc8349emds board to the
new API.
Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
Tested-by: Guennadi Liakhovetski <lg@denx.de>
2008-05-16 18:10:31 +09:00
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return bus == 0 && cs == 0;
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2007-07-27 00:49:11 +09:00
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}
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SPI API improvements
This patch gets rid of the spi_chipsel table and adds a handful of new
functions that makes the SPI layer cleaner and more flexible.
Instead of the spi_chipsel table, each board that wants to use SPI
gets to implement three hooks:
* spi_cs_activate(): Activates the chipselect for a given slave
* spi_cs_deactivate(): Deactivates the chipselect for a given slave
* spi_cs_is_valid(): Determines if the given bus/chipselect
combination can be activated.
Not all drivers may need those extra functions however. If that's the
case, the board code may just leave them out (assuming they know what
the driver needs) or rely on the linker to strip them out (assuming
--gc-sections is being used.)
To set up communication parameters for a given slave, the driver needs
to call spi_setup_slave(). This returns a pointer to an opaque
spi_slave struct which must be passed as a parameter to subsequent SPI
calls. This struct can be freed by calling spi_free_slave(), but most
driver probably don't want to do this.
Before starting one or more SPI transfers, the driver must call
spi_claim_bus() to gain exclusive access to the SPI bus and initialize
the hardware. When all transfers are done, the driver must call
spi_release_bus() to make the bus available to others, and possibly
shut down the SPI controller hardware.
spi_xfer() behaves mostly the same as before, but it now takes a
spi_slave parameter instead of a spi_chipsel function pointer. It also
got a new parameter, flags, which is used to specify chip select
behaviour. This may be extended with other flags in the future.
This patch has been build-tested on all powerpc and arm boards
involved. I have not tested NIOS since I don't have a toolchain for it
installed, so I expect some breakage there even though I've tried
fixing up everything I could find by visual inspection.
I have run-time tested this on AVR32 ATNGW100 using the atmel_spi and
DataFlash drivers posted as a follow-up. I'd like some help testing
other boards that use the existing SPI API.
But most of all, I'd like some comments on the new API. Is this stuff
usable for everyone? If not, why?
Changed in v4:
- Build fixes for various boards, drivers and commands
- Provide common struct spi_slave definition that can be extended by
drivers
- Pass a struct spi_slave * to spi_cs_activate and spi_cs_deactivate
- Make default bus and mode build-time configurable
- Override default SPI bus ID and mode on mx32ads and imx31_litekit.
Changed in v3:
- Add opaque struct spi_slave for controller-specific data associated
with a slave.
- Add spi_claim_bus() and spi_release_bus()
- Add spi_free_slave()
- spi_setup() is now called spi_setup_slave() and returns a
struct spi_slave
- soft_spi now supports four SPI modes (CPOL|CPHA)
- Add bus parameter to spi_setup_slave()
- Convert the new i.MX32 SPI driver
- Convert the new MC13783 RTC driver
Changed in v2:
- Convert the mpc8xxx_spi driver and the mpc8349emds board to the
new API.
Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
Tested-by: Guennadi Liakhovetski <lg@denx.de>
2008-05-16 18:10:31 +09:00
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void spi_cs_activate(struct spi_slave *slave)
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{
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gpio_write_bit(SPI_CS_GPIO0, 1);
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}
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2007-07-27 00:49:11 +09:00
|
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|
|
SPI API improvements
This patch gets rid of the spi_chipsel table and adds a handful of new
functions that makes the SPI layer cleaner and more flexible.
Instead of the spi_chipsel table, each board that wants to use SPI
gets to implement three hooks:
* spi_cs_activate(): Activates the chipselect for a given slave
* spi_cs_deactivate(): Deactivates the chipselect for a given slave
* spi_cs_is_valid(): Determines if the given bus/chipselect
combination can be activated.
Not all drivers may need those extra functions however. If that's the
case, the board code may just leave them out (assuming they know what
the driver needs) or rely on the linker to strip them out (assuming
--gc-sections is being used.)
To set up communication parameters for a given slave, the driver needs
to call spi_setup_slave(). This returns a pointer to an opaque
spi_slave struct which must be passed as a parameter to subsequent SPI
calls. This struct can be freed by calling spi_free_slave(), but most
driver probably don't want to do this.
Before starting one or more SPI transfers, the driver must call
spi_claim_bus() to gain exclusive access to the SPI bus and initialize
the hardware. When all transfers are done, the driver must call
spi_release_bus() to make the bus available to others, and possibly
shut down the SPI controller hardware.
spi_xfer() behaves mostly the same as before, but it now takes a
spi_slave parameter instead of a spi_chipsel function pointer. It also
got a new parameter, flags, which is used to specify chip select
behaviour. This may be extended with other flags in the future.
This patch has been build-tested on all powerpc and arm boards
involved. I have not tested NIOS since I don't have a toolchain for it
installed, so I expect some breakage there even though I've tried
fixing up everything I could find by visual inspection.
I have run-time tested this on AVR32 ATNGW100 using the atmel_spi and
DataFlash drivers posted as a follow-up. I'd like some help testing
other boards that use the existing SPI API.
But most of all, I'd like some comments on the new API. Is this stuff
usable for everyone? If not, why?
Changed in v4:
- Build fixes for various boards, drivers and commands
- Provide common struct spi_slave definition that can be extended by
drivers
- Pass a struct spi_slave * to spi_cs_activate and spi_cs_deactivate
- Make default bus and mode build-time configurable
- Override default SPI bus ID and mode on mx32ads and imx31_litekit.
Changed in v3:
- Add opaque struct spi_slave for controller-specific data associated
with a slave.
- Add spi_claim_bus() and spi_release_bus()
- Add spi_free_slave()
- spi_setup() is now called spi_setup_slave() and returns a
struct spi_slave
- soft_spi now supports four SPI modes (CPOL|CPHA)
- Add bus parameter to spi_setup_slave()
- Convert the new i.MX32 SPI driver
- Convert the new MC13783 RTC driver
Changed in v2:
- Convert the mpc8xxx_spi driver and the mpc8349emds board to the
new API.
Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
Tested-by: Guennadi Liakhovetski <lg@denx.de>
2008-05-16 18:10:31 +09:00
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|
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void spi_cs_deactivate(struct spi_slave *slave)
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{
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gpio_write_bit(SPI_CS_GPIO0, 0);
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}
|
2007-07-27 00:49:11 +09:00
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#ifdef CONFIG_PCI
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static unsigned char int_lines[32] = {
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29, 30, 27, 28, 29, 30, 25, 27,
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29, 30, 27, 28, 29, 30, 27, 28,
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29, 30, 27, 28, 29, 30, 27, 28,
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29, 30, 27, 28, 29, 30, 27, 28};
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static void taihu_pci_fixup_irq(struct pci_controller *hose, pci_dev_t dev)
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{
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unsigned char int_line = int_lines[PCI_DEV(dev) & 31];
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pci_hose_write_config_byte(hose, dev, PCI_INTERRUPT_LINE, int_line);
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}
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int pci_pre_init(struct pci_controller *hose)
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|
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{
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hose->fixup_irq = taihu_pci_fixup_irq;
|
|
|
|
return 1;
|
|
|
|
}
|
|
|
|
#endif /* CONFIG_PCI */
|
2008-09-01 12:37:00 +09:00
|
|
|
|
|
|
|
int board_eth_init(bd_t *bis)
|
|
|
|
{
|
|
|
|
return pci_eth_init(bis);
|
|
|
|
}
|