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u-boot-brain/board/ads5121/ads5121.c
Ralph Kondziella 70a4da45e1 ADS5121 Add PATA support 
Original patch from Ralph Kondziella
plus clean up by Wolfgang Denk
plus changes by John Rigby
    use ips clock not lpc
    port forward to current u-boot release

Signed-off-by: Ralph Kondziella <rk@argos-messtechnik.de>
Signed-off-by: Wolfgang Denk <wd@denx.de>
Signed-off-by: John Rigby <jrigby@freescale.com>
2009-02-03 15:40:29 -07:00

433 lines
12 KiB
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/*
* (C) Copyright 2007 DENX Software Engineering
*
* 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
*
*/
#include <common.h>
#include <mpc512x.h>
#include <asm/bitops.h>
#include <command.h>
#include <asm/processor.h>
#include <fdt_support.h>
#ifdef CONFIG_MISC_INIT_R
#include <i2c.h>
#endif
DECLARE_GLOBAL_DATA_PTR;
/* Clocks in use */
#define SCCR1_CLOCKS_EN (CLOCK_SCCR1_CFG_EN | \
CLOCK_SCCR1_LPC_EN | \
CLOCK_SCCR1_PSC_EN(CONFIG_PSC_CONSOLE) | \
CLOCK_SCCR1_PSCFIFO_EN | \
CLOCK_SCCR1_DDR_EN | \
CLOCK_SCCR1_FEC_EN | \
CLOCK_SCCR1_PATA_EN | \
CLOCK_SCCR1_PCI_EN | \
CLOCK_SCCR1_TPR_EN)
#define SCCR2_CLOCKS_EN (CLOCK_SCCR2_MEM_EN | \
CLOCK_SCCR2_SPDIF_EN | \
CLOCK_SCCR2_DIU_EN | \
CLOCK_SCCR2_I2C_EN)
#define CSAW_START(start) ((start) & 0xFFFF0000)
#define CSAW_STOP(start, size) (((start) + (size) - 1) >> 16)
long int fixed_sdram(void);
int board_early_init_f (void)
{
volatile immap_t *im = (immap_t *) CONFIG_SYS_IMMR;
u32 lpcaw;
/*
* Initialize Local Window for the CPLD registers access (CS2 selects
* the CPLD chip)
*/
im->sysconf.lpcs2aw = CSAW_START(CONFIG_SYS_CPLD_BASE) |
CSAW_STOP(CONFIG_SYS_CPLD_BASE, CONFIG_SYS_CPLD_SIZE);
im->lpc.cs_cfg[2] = CONFIG_SYS_CS2_CFG;
/*
* According to MPC5121e RM, configuring local access windows should
* be followed by a dummy read of the config register that was
* modified last and an isync
*/
lpcaw = im->sysconf.lpcs2aw;
__asm__ __volatile__ ("isync");
/*
* Disable Boot NOR FLASH write protect - CPLD Reg 8 NOR FLASH Control
*
* Without this the flash identification routine fails, as it needs to issue
* write commands in order to establish the device ID.
*/
#ifdef CONFIG_ADS5121_REV2
*((volatile u8 *)(CONFIG_SYS_CPLD_BASE + 0x08)) = 0xC1;
#else
if (*((u8 *)(CONFIG_SYS_CPLD_BASE + 0x08)) & 0x04) {
*((volatile u8 *)(CONFIG_SYS_CPLD_BASE + 0x08)) = 0xC1;
} else {
/* running from Backup flash */
*((volatile u8 *)(CONFIG_SYS_CPLD_BASE + 0x08)) = 0x32;
}
#endif
/*
* Configure Flash Speed
*/
*((volatile u32 *)(CONFIG_SYS_IMMR + LPC_OFFSET + CS0_CONFIG)) = CONFIG_SYS_CS0_CFG;
if (SVR_MJREV (im->sysconf.spridr) >= 2) {
*((volatile u32 *)(CONFIG_SYS_IMMR + LPC_OFFSET + CS_ALE_TIMING_CONFIG)) = CONFIG_SYS_CS_ALETIMING;
}
/*
* Enable clocks
*/
im->clk.sccr[0] = SCCR1_CLOCKS_EN;
im->clk.sccr[1] = SCCR2_CLOCKS_EN;
#if defined(CONFIG_IIM) || defined(CONFIG_CMD_FUSE)
im->clk.sccr[1] |= CLOCK_SCCR2_IIM_EN;
#endif
return 0;
}
phys_size_t initdram (int board_type)
{
u32 msize = 0;
msize = fixed_sdram ();
return msize;
}
/*
* fixed sdram init -- the board doesn't use memory modules that have serial presence
* detect or similar mechanism for discovery of the DRAM settings
*/
long int fixed_sdram (void)
{
volatile immap_t *im = (immap_t *) CONFIG_SYS_IMMR;
u32 msize = CONFIG_SYS_DDR_SIZE * 1024 * 1024;
u32 msize_log2 = __ilog2 (msize);
u32 i;
/* Initialize IO Control */
im->io_ctrl.regs[IOCTL_MEM/4] = IOCTRL_MUX_DDR;
/* Initialize DDR Local Window */
im->sysconf.ddrlaw.bar = CONFIG_SYS_DDR_BASE & 0xFFFFF000;
im->sysconf.ddrlaw.ar = msize_log2 - 1;
/*
* According to MPC5121e RM, configuring local access windows should
* be followed by a dummy read of the config register that was
* modified last and an isync
*/
i = im->sysconf.ddrlaw.ar;
__asm__ __volatile__ ("isync");
/* Enable DDR */
im->mddrc.ddr_sys_config = CONFIG_SYS_MDDRC_SYS_CFG_EN;
/* Initialize DDR Priority Manager */
im->mddrc.prioman_config1 = CONFIG_SYS_MDDRCGRP_PM_CFG1;
im->mddrc.prioman_config2 = CONFIG_SYS_MDDRCGRP_PM_CFG2;
im->mddrc.hiprio_config = CONFIG_SYS_MDDRCGRP_HIPRIO_CFG;
im->mddrc.lut_table0_main_upper = CONFIG_SYS_MDDRCGRP_LUT0_MU;
im->mddrc.lut_table0_main_lower = CONFIG_SYS_MDDRCGRP_LUT0_ML;
im->mddrc.lut_table1_main_upper = CONFIG_SYS_MDDRCGRP_LUT1_MU;
im->mddrc.lut_table1_main_lower = CONFIG_SYS_MDDRCGRP_LUT1_ML;
im->mddrc.lut_table2_main_upper = CONFIG_SYS_MDDRCGRP_LUT2_MU;
im->mddrc.lut_table2_main_lower = CONFIG_SYS_MDDRCGRP_LUT2_ML;
im->mddrc.lut_table3_main_upper = CONFIG_SYS_MDDRCGRP_LUT3_MU;
im->mddrc.lut_table3_main_lower = CONFIG_SYS_MDDRCGRP_LUT3_ML;
im->mddrc.lut_table4_main_upper = CONFIG_SYS_MDDRCGRP_LUT4_MU;
im->mddrc.lut_table4_main_lower = CONFIG_SYS_MDDRCGRP_LUT4_ML;
im->mddrc.lut_table0_alternate_upper = CONFIG_SYS_MDDRCGRP_LUT0_AU;
im->mddrc.lut_table0_alternate_lower = CONFIG_SYS_MDDRCGRP_LUT0_AL;
im->mddrc.lut_table1_alternate_upper = CONFIG_SYS_MDDRCGRP_LUT1_AU;
im->mddrc.lut_table1_alternate_lower = CONFIG_SYS_MDDRCGRP_LUT1_AL;
im->mddrc.lut_table2_alternate_upper = CONFIG_SYS_MDDRCGRP_LUT2_AU;
im->mddrc.lut_table2_alternate_lower = CONFIG_SYS_MDDRCGRP_LUT2_AL;
im->mddrc.lut_table3_alternate_upper = CONFIG_SYS_MDDRCGRP_LUT3_AU;
im->mddrc.lut_table3_alternate_lower = CONFIG_SYS_MDDRCGRP_LUT3_AL;
im->mddrc.lut_table4_alternate_upper = CONFIG_SYS_MDDRCGRP_LUT4_AU;
im->mddrc.lut_table4_alternate_lower = CONFIG_SYS_MDDRCGRP_LUT4_AL;
/* Initialize MDDRC */
im->mddrc.ddr_sys_config = CONFIG_SYS_MDDRC_SYS_CFG;
im->mddrc.ddr_time_config0 = CONFIG_SYS_MDDRC_TIME_CFG0;
im->mddrc.ddr_time_config1 = CONFIG_SYS_MDDRC_TIME_CFG1;
im->mddrc.ddr_time_config2 = CONFIG_SYS_MDDRC_TIME_CFG2;
/* Initialize DDR */
for (i = 0; i < 10; i++)
im->mddrc.ddr_command = CONFIG_SYS_MICRON_NOP;
im->mddrc.ddr_command = CONFIG_SYS_MICRON_PCHG_ALL;
im->mddrc.ddr_command = CONFIG_SYS_MICRON_NOP;
im->mddrc.ddr_command = CONFIG_SYS_MICRON_RFSH;
im->mddrc.ddr_command = CONFIG_SYS_MICRON_NOP;
im->mddrc.ddr_command = CONFIG_SYS_MICRON_RFSH;
im->mddrc.ddr_command = CONFIG_SYS_MICRON_NOP;
im->mddrc.ddr_command = CONFIG_SYS_MICRON_INIT_DEV_OP;
im->mddrc.ddr_command = CONFIG_SYS_MICRON_NOP;
im->mddrc.ddr_command = CONFIG_SYS_MICRON_EM2;
im->mddrc.ddr_command = CONFIG_SYS_MICRON_NOP;
im->mddrc.ddr_command = CONFIG_SYS_MICRON_PCHG_ALL;
im->mddrc.ddr_command = CONFIG_SYS_MICRON_EM2;
im->mddrc.ddr_command = CONFIG_SYS_MICRON_EM3;
im->mddrc.ddr_command = CONFIG_SYS_MICRON_EN_DLL;
im->mddrc.ddr_command = CONFIG_SYS_MICRON_INIT_DEV_OP;
im->mddrc.ddr_command = CONFIG_SYS_MICRON_PCHG_ALL;
im->mddrc.ddr_command = CONFIG_SYS_MICRON_RFSH;
im->mddrc.ddr_command = CONFIG_SYS_MICRON_INIT_DEV_OP;
im->mddrc.ddr_command = CONFIG_SYS_MICRON_OCD_DEFAULT;
im->mddrc.ddr_command = CONFIG_SYS_MICRON_PCHG_ALL;
im->mddrc.ddr_command = CONFIG_SYS_MICRON_NOP;
/* Start MDDRC */
im->mddrc.ddr_time_config0 = CONFIG_SYS_MDDRC_TIME_CFG0_RUN;
im->mddrc.ddr_sys_config = CONFIG_SYS_MDDRC_SYS_CFG_RUN;
return msize;
}
int misc_init_r(void)
{
u8 tmp_val;
extern int ads5121_diu_init(void);
/* Using this for DIU init before the driver in linux takes over
* Enable the TFP410 Encoder (I2C address 0x38)
*/
i2c_set_bus_num(2);
tmp_val = 0xBF;
i2c_write(0x38, 0x08, 1, &tmp_val, sizeof(tmp_val));
/* Verify if enabled */
tmp_val = 0;
i2c_read(0x38, 0x08, 1, &tmp_val, sizeof(tmp_val));
debug("DVI Encoder Read: 0x%02lx\n", tmp_val);
tmp_val = 0x10;
i2c_write(0x38, 0x0A, 1, &tmp_val, sizeof(tmp_val));
/* Verify if enabled */
tmp_val = 0;
i2c_read(0x38, 0x0A, 1, &tmp_val, sizeof(tmp_val));
debug("DVI Encoder Read: 0x%02lx\n", tmp_val);
#ifdef CONFIG_FSL_DIU_FB
#if !(defined(CONFIG_VIDEO) || defined(CONFIG_CFB_CONSOLE))
ads5121_diu_init();
#endif
#endif
return 0;
}
static iopin_t ioregs_init[] = {
/* FUNC1=FEC_RX_DV Sets Next 3 to FEC pads */
{
IOCTL_SPDIF_TXCLK, 3, 0,
IO_PIN_FMUX(1) | IO_PIN_HOLD(0) | IO_PIN_PUD(0) |
IO_PIN_PUE(0) | IO_PIN_ST(0) | IO_PIN_DS(3)
},
/* Set highest Slew on 9 PATA pins */
{
IOCTL_PATA_CE1, 9, 1,
IO_PIN_FMUX(0) | IO_PIN_HOLD(0) | IO_PIN_PUD(0) |
IO_PIN_PUE(0) | IO_PIN_ST(0) | IO_PIN_DS(3)
},
/* FUNC1=FEC_COL Sets Next 15 to FEC pads */
{
IOCTL_PSC0_0, 15, 0,
IO_PIN_FMUX(1) | IO_PIN_HOLD(0) | IO_PIN_PUD(0) |
IO_PIN_PUE(0) | IO_PIN_ST(0) | IO_PIN_DS(3)
},
/* FUNC1=SPDIF_TXCLK */
{
IOCTL_LPC_CS1, 1, 0,
IO_PIN_FMUX(1) | IO_PIN_HOLD(0) | IO_PIN_PUD(0) |
IO_PIN_PUE(0) | IO_PIN_ST(1) | IO_PIN_DS(3)
},
/* FUNC2=SPDIF_TX and sets Next pin to SPDIF_RX */
{
IOCTL_I2C1_SCL, 2, 0,
IO_PIN_FMUX(2) | IO_PIN_HOLD(0) | IO_PIN_PUD(0) |
IO_PIN_PUE(0) | IO_PIN_ST(1) | IO_PIN_DS(3)
},
/* FUNC2=DIU CLK */
{
IOCTL_PSC6_0, 1, 0,
IO_PIN_FMUX(2) | IO_PIN_HOLD(0) | IO_PIN_PUD(0) |
IO_PIN_PUE(0) | IO_PIN_ST(1) | IO_PIN_DS(3)
},
/* FUNC2=DIU_HSYNC */
{
IOCTL_PSC6_1, 1, 0,
IO_PIN_FMUX(2) | IO_PIN_HOLD(0) | IO_PIN_PUD(0) |
IO_PIN_PUE(0) | IO_PIN_ST(0) | IO_PIN_DS(3)
},
/* FUNC2=DIUVSYNC Sets Next 26 to DIU Pads */
{
IOCTL_PSC6_4, 26, 0,
IO_PIN_FMUX(2) | IO_PIN_HOLD(0) | IO_PIN_PUD(0) |
IO_PIN_PUE(0) | IO_PIN_ST(0) | IO_PIN_DS(3)
}
};
static iopin_t rev2_silicon_pci_ioregs_init[] = {
/* FUNC0=PCI Sets next 54 to PCI pads */
{
IOCTL_PCI_AD31, 54, 0,
IO_PIN_FMUX(0) | IO_PIN_HOLD(0) | IO_PIN_DS(0)
}
};
int checkboard (void)
{
ushort brd_rev = *(vu_short *) (CONFIG_SYS_CPLD_BASE + 0x00);
uchar cpld_rev = *(vu_char *) (CONFIG_SYS_CPLD_BASE + 0x02);
volatile immap_t *im = (immap_t *) CONFIG_SYS_IMMR;
printf ("Board: ADS5121 rev. 0x%04x (CPLD rev. 0x%02x)\n",
brd_rev, cpld_rev);
/* initialize function mux & slew rate IO inter alia on IO Pins */
iopin_initialize(ioregs_init, sizeof(ioregs_init) / sizeof(ioregs_init[0]));
if (SVR_MJREV (im->sysconf.spridr) >= 2) {
iopin_initialize(rev2_silicon_pci_ioregs_init, 1);
}
return 0;
}
#if defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP)
void ft_board_setup(void *blob, bd_t *bd)
{
ft_cpu_setup(blob, bd);
fdt_fixup_memory(blob, (u64)bd->bi_memstart, (u64)bd->bi_memsize);
}
#endif /* defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP) */
#if defined(CONFIG_CMD_IDE) && defined(CONFIG_IDE_RESET)
void init_ide_reset (void)
{
volatile immap_t *immr = (immap_t *) CONFIG_SYS_IMMR;
debug ("init_ide_reset\n");
/*
* Clear the reset bit to reset the interface
* cf. RefMan MPC5121EE: 28.4.1 Resetting the ATA Bus
*/
immr->pata.pata_ata_control = 0;
udelay(100);
/* Assert the reset bit to enable the interface */
immr->pata.pata_ata_control = FSL_ATA_CTRL_ATA_RST_B;
udelay(100);
}
void ide_set_reset (int idereset)
{
volatile immap_t *immr = (immap_t *) CONFIG_SYS_IMMR;
debug ("ide_set_reset(%d)\n", idereset);
if (idereset) {
immr->pata.pata_ata_control = 0;
udelay(100);
} else {
immr->pata.pata_ata_control = FSL_ATA_CTRL_ATA_RST_B;
udelay(100);
}
}
#define CALC_TIMING(t) (t + period - 1) / period
int ide_preinit (void)
{
volatile immap_t *immr = (immap_t *) CONFIG_SYS_IMMR;
long t;
const struct {
short t0;
short t1;
short t2_8;
short t2_16;
short t2i;
short t4;
short t9;
short tA;
} pio_specs = {
.t0 = 600,
.t1 = 70,
.t2_8 = 290,
.t2_16 = 165,
.t2i = 0,
.t4 = 30,
.t9 = 20,
.tA = 50,
};
union {
u32 config;
struct {
u8 field1;
u8 field2;
u8 field3;
u8 field4;
}bytes;
}cfg;
debug ("IDE preinit using PATA peripheral at IMMR-ADDR %08x\n",
(u32)&immr->pata);
/* Set the reset bit to 1 to enable the interface */
immr->pata.pata_ata_control = FSL_ATA_CTRL_ATA_RST_B;
/* Init timings : we use PIO mode 0 timings */
t = 1000000000 / gd->ips_clk; /* period in ns */
cfg.bytes.field1 = 3;
cfg.bytes.field2 = 3;
cfg.bytes.field3 = (pio_specs.t1 + t) / t;
cfg.bytes.field4 = (pio_specs.t2_8 + t) / t;
immr->pata.pata_time1 = cfg.config;
cfg.bytes.field1 = (pio_specs.t2_8 + t) / t;
cfg.bytes.field2 = (pio_specs.tA + t) / t + 2;
cfg.bytes.field3 = 1;
cfg.bytes.field4 = (pio_specs.t4 + t) / t;
immr->pata.pata_time2 = cfg.config;
cfg.config = immr->pata.pata_time3;
cfg.bytes.field1 = (pio_specs.t9 + t) / t;
immr->pata.pata_time3 = cfg.config;
debug ("PATA preinit complete.\n");
return 0;
}
#endif /* defined(CONFIG_CMD_IDE) && defined(CONFIG_IDE_RESET) */
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