diff options
Diffstat (limited to 'u-boot/board/mpl/vcma9/vcma9.c')
| -rw-r--r-- | u-boot/board/mpl/vcma9/vcma9.c | 362 |
1 files changed, 362 insertions, 0 deletions
diff --git a/u-boot/board/mpl/vcma9/vcma9.c b/u-boot/board/mpl/vcma9/vcma9.c new file mode 100644 index 0000000..978e6fd --- /dev/null +++ b/u-boot/board/mpl/vcma9/vcma9.c @@ -0,0 +1,362 @@ +/* + * (C) Copyright 2002 + * Sysgo Real-Time Solutions, GmbH <www.elinos.com> + * Marius Groeger <mgroeger@sysgo.de> + * + * (C) Copyright 2002 + * David Mueller, ELSOFT AG, <d.mueller@elsoft.ch> + * + * 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 <netdev.h> +#include <asm/arch/s3c24x0_cpu.h> +#include <stdio_dev.h> +#include <i2c.h> + +#include "vcma9.h" +#include "../common/common_util.h" + +DECLARE_GLOBAL_DATA_PTR; + +#define FCLK_SPEED 1 + +#if FCLK_SPEED==0 /* Fout = 203MHz, Fin = 12MHz for Audio */ +#define M_MDIV 0xC3 +#define M_PDIV 0x4 +#define M_SDIV 0x1 +#elif FCLK_SPEED==1 /* Fout = 202.8MHz */ +#define M_MDIV 0xA1 +#define M_PDIV 0x3 +#define M_SDIV 0x1 +#endif + +#define USB_CLOCK 1 + +#if USB_CLOCK==0 +#define U_M_MDIV 0xA1 +#define U_M_PDIV 0x3 +#define U_M_SDIV 0x1 +#elif USB_CLOCK==1 +#define U_M_MDIV 0x48 +#define U_M_PDIV 0x3 +#define U_M_SDIV 0x2 +#endif + +static inline void delay(unsigned long loops) +{ + __asm__ volatile ("1:\n" + "subs %0, %1, #1\n" + "bne 1b":"=r" (loops):"0" (loops)); +} + +/* + * Miscellaneous platform dependent initialisations + */ + +int board_init(void) +{ + struct s3c24x0_clock_power * const clk_power = + s3c24x0_get_base_clock_power(); + struct s3c24x0_gpio * const gpio = s3c24x0_get_base_gpio(); + + /* to reduce PLL lock time, adjust the LOCKTIME register */ + clk_power->locktime = 0xFFFFFF; + + /* configure MPLL */ + clk_power->mpllcon = ((M_MDIV << 12) + (M_PDIV << 4) + M_SDIV); + + /* some delay between MPLL and UPLL */ + delay (4000); + + /* configure UPLL */ + clk_power->upllcon = ((U_M_MDIV << 12) + (U_M_PDIV << 4) + U_M_SDIV); + + /* some delay between MPLL and UPLL */ + delay (8000); + + /* set up the I/O ports */ + gpio->gpacon = 0x007FFFFF; + gpio->gpbcon = 0x002AAAAA; + gpio->gpbup = 0x000002BF; + gpio->gpccon = 0xAAAAAAAA; + gpio->gpcup = 0x0000FFFF; + gpio->gpdcon = 0xAAAAAAAA; + gpio->gpdup = 0x0000FFFF; + gpio->gpecon = 0xAAAAAAAA; + gpio->gpeup = 0x000037F7; + gpio->gpfcon = 0x00000000; + gpio->gpfup = 0x00000000; + gpio->gpgcon = 0xFFEAFF5A; + gpio->gpgup = 0x0000F0DC; + gpio->gphcon = 0x0028AAAA; + gpio->gphup = 0x00000656; + + /* setup correct IRQ modes for NIC */ + /* rising edge mode */ + gpio->extint2 = (gpio->extint2 & ~(7<<8)) | (4<<8); + + /* select USB port 2 to be host or device (fix to host for now) */ + gpio->misccr |= 0x08; + + /* init serial */ + gd->baudrate = CONFIG_BAUDRATE; + gd->have_console = 1; + serial_init(); + + /* arch number of VCMA9-Board */ + gd->bd->bi_arch_number = MACH_TYPE_MPL_VCMA9; + + /* adress of boot parameters */ + gd->bd->bi_boot_params = 0x30000100; + + icache_enable(); + dcache_enable(); + + return 0; +} + +/* + * NAND flash initialization. + */ +#if defined(CONFIG_CMD_NAND) +extern ulong +nand_probe(ulong physadr); + + +static inline void NF_Reset(void) +{ + int i; + + NF_SetCE(NFCE_LOW); + NF_Cmd(0xFF); /* reset command */ + for(i = 0; i < 10; i++); /* tWB = 100ns. */ + NF_WaitRB(); /* wait 200~500us; */ + NF_SetCE(NFCE_HIGH); +} + + +static inline void NF_Init(void) +{ +#if 0 /* a little bit too optimistic */ +#define TACLS 0 +#define TWRPH0 3 +#define TWRPH1 0 +#else +#define TACLS 0 +#define TWRPH0 4 +#define TWRPH1 2 +#endif + + NF_Conf((1<<15)|(0<<14)|(0<<13)|(1<<12)|(1<<11)|(TACLS<<8)|(TWRPH0<<4)|(TWRPH1<<0)); + /*nand->NFCONF = (1<<15)|(1<<14)|(1<<13)|(1<<12)|(1<<11)|(TACLS<<8)|(TWRPH0<<4)|(TWRPH1<<0); */ + /* 1 1 1 1, 1 xxx, r xxx, r xxx */ + /* En 512B 4step ECCR nFCE=H tACLS tWRPH0 tWRPH1 */ + + NF_Reset(); +} + +void +nand_init(void) +{ + struct s3c2410_nand * const nand = s3c2410_get_base_nand(); + + NF_Init(); +#ifdef DEBUG + printf("NAND flash probing at 0x%.8lX\n", (ulong)nand); +#endif + printf ("%4lu MB\n", nand_probe((ulong)nand) >> 20); +} +#endif + +/* + * Get some Board/PLD Info + */ + +static u8 Get_PLD_ID(void) +{ + VCMA9_PLD * const pld = VCMA9_get_base_PLD(); + + return(pld->ID); +} + +static u8 Get_PLD_BOARD(void) +{ + VCMA9_PLD * const pld = VCMA9_get_base_PLD(); + + return(pld->BOARD); +} + +static u8 Get_PLD_SDRAM(void) +{ + VCMA9_PLD * const pld = VCMA9_get_base_PLD(); + + return(pld->SDRAM); +} + +static u8 Get_PLD_Version(void) +{ + return((Get_PLD_ID() >> 4) & 0x0F); +} + +static u8 Get_PLD_Revision(void) +{ + return(Get_PLD_ID() & 0x0F); +} + +#if 0 /* not used */ +static int Get_Board_Config(void) +{ + u8 config = Get_PLD_BOARD() & 0x03; + + if (config == 3) + return 1; + else + return 0; +} +#endif + +static uchar Get_Board_PCB(void) +{ + return(((Get_PLD_BOARD() >> 4) & 0x03) + 'A'); +} + +static u8 Get_SDRAM_ChipNr(void) +{ + switch ((Get_PLD_SDRAM() >> 4) & 0x0F) { + case 0: return 4; + case 1: return 1; + case 2: return 2; + default: return 0; + } +} + +static ulong Get_SDRAM_ChipSize(void) +{ + switch (Get_PLD_SDRAM() & 0x0F) { + case 0: return 16 * (1024*1024); + case 1: return 32 * (1024*1024); + case 2: return 8 * (1024*1024); + case 3: return 8 * (1024*1024); + default: return 0; + } +} +static const char * Get_SDRAM_ChipGeom(void) +{ + switch (Get_PLD_SDRAM() & 0x0F) { + case 0: return "4Mx8x4"; + case 1: return "8Mx8x4"; + case 2: return "2Mx8x4"; + case 3: return "4Mx8x2"; + default: return "unknown"; + } +} + +static void Show_VCMA9_Info(char *board_name, char *serial) +{ + printf("Board: %s SN: %s PCB Rev: %c PLD(%d,%d)\n", + board_name, serial, Get_Board_PCB(), Get_PLD_Version(), Get_PLD_Revision()); + printf("SDRAM: %d chips %s\n", Get_SDRAM_ChipNr(), Get_SDRAM_ChipGeom()); +} + +int dram_init(void) +{ + gd->bd->bi_dram[0].start = PHYS_SDRAM_1; + gd->bd->bi_dram[0].size = Get_SDRAM_ChipSize() * Get_SDRAM_ChipNr(); + + return 0; +} + +/* ------------------------------------------------------------------------- */ + +/* + * Check Board Identity: + */ + +int checkboard(void) +{ + char s[50]; + int i; + backup_t *b = (backup_t *) s; + + i = getenv_f("serial#", s, 32); + if ((i < 0) || strncmp (s, "VCMA9", 5)) { + get_backup_values (b); + if (strncmp (b->signature, "MPL\0", 4) != 0) { + puts ("### No HW ID - assuming VCMA9"); + } else { + b->serial_name[5] = 0; + Show_VCMA9_Info(b->serial_name, &b->serial_name[6]); + } + } else { + s[5] = 0; + Show_VCMA9_Info(s, &s[6]); + } + /*printf("\n");*/ + return(0); +} + + +int last_stage_init(void) +{ + checkboard(); + stdio_print_current_devices(); + check_env(); + return 0; +} + +/*************************************************************************** + * some helping routines + */ +#if !CONFIG_USB_KEYBOARD +int overwrite_console(void) +{ + /* return TRUE if console should be overwritten */ + return 0; +} +#endif + +/************************************************************************ +* Print VCMA9 Info +************************************************************************/ +void print_vcma9_info(void) +{ + char s[50]; + int i; + + if ((i = getenv_f("serial#", s, 32)) < 0) { + puts ("### No HW ID - assuming VCMA9"); + printf("i %d", i*24); + } else { + s[5] = 0; + Show_VCMA9_Info(s, &s[6]); + } +} + +#ifdef CONFIG_CMD_NET +int board_eth_init(bd_t *bis) +{ + int rc = 0; +#ifdef CONFIG_CS8900 + rc = cs8900_initialize(0, CONFIG_CS8900_BASE); +#endif + return rc; +} +#endif |