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Diffstat (limited to 'board/bc3450/bc3450.c')
| -rw-r--r-- | board/bc3450/bc3450.c | 677 |
1 files changed, 677 insertions, 0 deletions
diff --git a/board/bc3450/bc3450.c b/board/bc3450/bc3450.c new file mode 100644 index 0000000..a030b82 --- /dev/null +++ b/board/bc3450/bc3450.c @@ -0,0 +1,677 @@ +/* + * -- Version 1.1 -- + * + * (C) Copyright 2003-2004 + * Wolfgang Denk, DENX Software Engineering, wd@denx.de. + * + * (C) Copyright 2004 + * Mark Jonas, Freescale Semiconductor, mark.jonas@motorola.com. + * + * (C) Copyright 2004-2005 + * Martin Krause, TQ-Systems GmbH, martin.krause@tqs.de + * + * (C) Copyright 2006 + * Stefan Strobl, GERSYS GmbH, stefan.strobl@gersys.de + * + * History: + * 1.1 - improved SM501 init to meet spec timing + * + * 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 <mpc5xxx.h> +#include <pci.h> + +#ifdef CONFIG_VIDEO_SM501 +#include <sm501.h> +#endif + +#if defined(CONFIG_MPC5200_DDR) +#include "mt46v16m16-75.h" +#else +#include "mt48lc16m16a2-75.h" +#endif + +#ifdef CONFIG_RTC_MPC5200 +#include <rtc.h> +#endif + +#ifdef CONFIG_PS2MULT +void ps2mult_early_init(void); +#endif + +#ifndef CFG_RAMBOOT +static void sdram_start (int hi_addr) +{ + long hi_addr_bit = hi_addr ? 0x01000000 : 0; + + /* unlock mode register */ + *(vu_long *)MPC5XXX_SDRAM_CTRL = SDRAM_CONTROL | 0x80000000 | + hi_addr_bit; + __asm__ volatile ("sync"); + + /* precharge all banks */ + *(vu_long *)MPC5XXX_SDRAM_CTRL = SDRAM_CONTROL | 0x80000002 | + hi_addr_bit; + __asm__ volatile ("sync"); + +#if SDRAM_DDR + /* set mode register: extended mode */ + *(vu_long *)MPC5XXX_SDRAM_MODE = SDRAM_EMODE; + __asm__ volatile ("sync"); + + /* set mode register: reset DLL */ + *(vu_long *)MPC5XXX_SDRAM_MODE = SDRAM_MODE | 0x04000000; + __asm__ volatile ("sync"); +#endif + + /* precharge all banks */ + *(vu_long *)MPC5XXX_SDRAM_CTRL = SDRAM_CONTROL | 0x80000002 | + hi_addr_bit; + __asm__ volatile ("sync"); + + /* auto refresh */ + *(vu_long *)MPC5XXX_SDRAM_CTRL = SDRAM_CONTROL | 0x80000004 | + hi_addr_bit; + __asm__ volatile ("sync"); + + /* set mode register */ + *(vu_long *)MPC5XXX_SDRAM_MODE = SDRAM_MODE; + __asm__ volatile ("sync"); + + /* normal operation */ + *(vu_long *)MPC5XXX_SDRAM_CTRL = SDRAM_CONTROL | hi_addr_bit; + __asm__ volatile ("sync"); +} +#endif + +/* + * ATTENTION: Although partially referenced initdram does NOT make real use + * use of CFG_SDRAM_BASE. The code does not work if CFG_SDRAM_BASE + * is something else than 0x00000000. + */ + +#if defined(CONFIG_MPC5200) +long int initdram (int board_type) +{ + ulong dramsize = 0; + ulong dramsize2 = 0; +#ifndef CFG_RAMBOOT + ulong test1, test2; + + /* setup SDRAM chip selects */ + *(vu_long *)MPC5XXX_SDRAM_CS0CFG = 0x0000001c; /* 512MB at 0x0 */ + *(vu_long *)MPC5XXX_SDRAM_CS1CFG = 0x40000000; /* disabled */ + __asm__ volatile ("sync"); + + /* setup config registers */ + *(vu_long *)MPC5XXX_SDRAM_CONFIG1 = SDRAM_CONFIG1; + *(vu_long *)MPC5XXX_SDRAM_CONFIG2 = SDRAM_CONFIG2; + __asm__ volatile ("sync"); + +#if SDRAM_DDR + /* set tap delay */ + *(vu_long *)MPC5XXX_CDM_PORCFG = SDRAM_TAPDELAY; + __asm__ volatile ("sync"); +#endif + + /* find RAM size using SDRAM CS0 only */ + sdram_start(0); + test1 = get_ram_size((long *)CFG_SDRAM_BASE, 0x20000000); + sdram_start(1); + test2 = get_ram_size((long *)CFG_SDRAM_BASE, 0x20000000); + if (test1 > test2) { + sdram_start(0); + dramsize = test1; + } else { + dramsize = test2; + } + + /* memory smaller than 1MB is impossible */ + if (dramsize < (1 << 20)) { + dramsize = 0; + } + + /* set SDRAM CS0 size according to the amount of RAM found */ + if (dramsize > 0) { + *(vu_long *)MPC5XXX_SDRAM_CS0CFG = 0x13 + + __builtin_ffs(dramsize >> 20) - 1; + } else { + *(vu_long *)MPC5XXX_SDRAM_CS0CFG = 0; /* disabled */ + } + + /* let SDRAM CS1 start right after CS0 */ + *(vu_long *)MPC5XXX_SDRAM_CS1CFG = dramsize + 0x0000001c; /* 512MB */ + + /* find RAM size using SDRAM CS1 only */ + sdram_start(0); + test1 = get_ram_size((long *)(CFG_SDRAM_BASE + dramsize), 0x20000000); + sdram_start(1); + test2 = get_ram_size((long *)(CFG_SDRAM_BASE + dramsize), 0x20000000); + if (test1 > test2) { + sdram_start(0); + dramsize2 = test1; + } else { + dramsize2 = test2; + } + + /* memory smaller than 1MB is impossible */ + if (dramsize2 < (1 << 20)) { + dramsize2 = 0; + } + + /* set SDRAM CS1 size according to the amount of RAM found */ + if (dramsize2 > 0) { + *(vu_long *)MPC5XXX_SDRAM_CS1CFG = dramsize + | (0x13 + __builtin_ffs(dramsize2 >> 20) - 1); + } else { + *(vu_long *)MPC5XXX_SDRAM_CS1CFG = dramsize; /* disabled */ + } + +#else /* CFG_RAMBOOT */ + + /* retrieve size of memory connected to SDRAM CS0 */ + dramsize = *(vu_long *)MPC5XXX_SDRAM_CS0CFG & 0xFF; + if (dramsize >= 0x13) { + dramsize = (1 << (dramsize - 0x13)) << 20; + } else { + dramsize = 0; + } + + /* retrieve size of memory connected to SDRAM CS1 */ + dramsize2 = *(vu_long *)MPC5XXX_SDRAM_CS1CFG & 0xFF; + if (dramsize2 >= 0x13) { + dramsize2 = (1 << (dramsize2 - 0x13)) << 20; + } else { + dramsize2 = 0; + } + +#endif /* CFG_RAMBOOT */ + + return dramsize; +} + +#elif defined(CONFIG_MGT5100) + +long int initdram (int board_type) +{ + ulong dramsize = 0; +#ifndef CFG_RAMBOOT + ulong test1, test2; + + /* setup and enable SDRAM chip selects */ + *(vu_long *)MPC5XXX_SDRAM_START = 0x00000000; + *(vu_long *)MPC5XXX_SDRAM_STOP = 0x0000ffff; /* 2G */ + *(vu_long *)MPC5XXX_ADDECR |= (1 << 22); /* Enable SDRAM */ + __asm__ volatile ("sync"); + + /* setup config registers */ + *(vu_long *)MPC5XXX_SDRAM_CONFIG1 = SDRAM_CONFIG1; + *(vu_long *)MPC5XXX_SDRAM_CONFIG2 = SDRAM_CONFIG2; + + /* address select register */ + *(vu_long *)MPC5XXX_SDRAM_XLBSEL = SDRAM_ADDRSEL; + __asm__ volatile ("sync"); + + /* find RAM size */ + sdram_start(0); + test1 = get_ram_size((ulong *)CFG_SDRAM_BASE, 0x80000000); + sdram_start(1); + test2 = get_ram_size((ulong *)CFG_SDRAM_BASE, 0x80000000); + if (test1 > test2) { + sdram_start(0); + dramsize = test1; + } else { + dramsize = test2; + } + + /* set SDRAM end address according to size */ + *(vu_long *)MPC5XXX_SDRAM_STOP = ((dramsize - 1) >> 15); + +#else /* CFG_RAMBOOT */ + + /* Retrieve amount of SDRAM available */ + dramsize = ((*(vu_long *)MPC5XXX_SDRAM_STOP + 1) << 15); + +#endif /* CFG_RAMBOOT */ + + return dramsize; +} + +#else +#error Neither CONFIG_MPC5200 or CONFIG_MGT5100 defined +#endif + +int checkboard (void) +{ +#if defined (CONFIG_TQM5200) + puts ("Board: TQM5200 (TQ-Components GmbH)\n"); +#endif + +#if defined (CONFIG_BC3450) + puts ("Dev: GERSYS BC3450\n"); +#endif + + return 0; +} + +void flash_preinit(void) +{ + /* + * Now, when we are in RAM, enable flash write + * access for detection process. + * Note that CS_BOOT cannot be cleared when + * executing in flash. + */ +#if defined(CONFIG_MGT5100) + *(vu_long *)MPC5XXX_ADDECR &= ~(1 << 25); /* disable CS_BOOT */ + *(vu_long *)MPC5XXX_ADDECR |= (1 << 16); /* enable CS0 */ +#endif + *(vu_long *)MPC5XXX_BOOTCS_CFG &= ~0x1; /* clear RO */ +} + + +#ifdef CONFIG_PCI +static struct pci_controller hose; + +extern void pci_mpc5xxx_init(struct pci_controller *); + +void pci_init_board(void) +{ + pci_mpc5xxx_init(&hose); +} +#endif + +#if defined (CFG_CMD_IDE) && defined (CONFIG_IDE_RESET) +#define GPIO_PSC1_4 0x01000000UL + +void init_ide_reset (void) +{ + debug ("init_ide_reset\n"); + + /* Configure PSC1_4 as GPIO output for ATA reset */ + *(vu_long *) MPC5XXX_WU_GPIO_ENABLE |= GPIO_PSC1_4; + *(vu_long *) MPC5XXX_WU_GPIO_DIR |= GPIO_PSC1_4; +} + +void ide_set_reset (int idereset) +{ + debug ("ide_reset(%d)\n", idereset); + + if (idereset) { + *(vu_long *) MPC5XXX_WU_GPIO_DATA &= ~GPIO_PSC1_4; + } else { + *(vu_long *) MPC5XXX_WU_GPIO_DATA |= GPIO_PSC1_4; + } +} +#endif /* defined (CFG_CMD_IDE) && defined (CONFIG_IDE_RESET) */ + +#ifdef CONFIG_POST +/* + * Reads GPIO pin PSC6_3. A keypress is reported, if PSC6_3 is low. If PSC6_3 + * is left open, no keypress is detected. + */ +int post_hotkeys_pressed(void) +{ + struct mpc5xxx_gpio *gpio; + + gpio = (struct mpc5xxx_gpio*) MPC5XXX_GPIO; + + /* + * Configure PSC6_1 and PSC6_3 as GPIO. PSC6 then couldn't be used in + * CODEC or UART mode. Consumer IrDA should still be possible. + */ + gpio->port_config &= ~(0x07000000); + gpio->port_config |= 0x03000000; + + /* Enable GPIO for GPIO_IRDA_1 (IR_USB_CLK pin) = PSC6_3 */ + gpio->simple_gpioe |= 0x20000000; + + /* Configure GPIO_IRDA_1 as input */ + gpio->simple_ddr &= ~(0x20000000); + + return ((gpio->simple_ival & 0x20000000) ? 0 : 1); +} +#endif + +#if defined(CONFIG_POST) || defined(CONFIG_LOGBUFFER) + +void post_word_store (ulong a) +{ + volatile ulong *save_addr = + (volatile ulong *)(MPC5XXX_SRAM + MPC5XXX_SRAM_POST_SIZE); + + *save_addr = a; +} + +ulong post_word_load (void) +{ + volatile ulong *save_addr = + (volatile ulong *)(MPC5XXX_SRAM + MPC5XXX_SRAM_POST_SIZE); + + return *save_addr; +} +#endif /* CONFIG_POST || CONFIG_LOGBUFFER*/ + + +#ifdef CONFIG_BOARD_EARLY_INIT_R +int board_early_init_r (void) +{ +#ifdef CONFIG_RTC_MPC5200 + struct rtc_time t; + + /* set to Wed Dec 31 19:00:00 1969 */ + t.tm_sec = t.tm_min = 0; + t.tm_hour = 19; + t.tm_mday = 31; + t.tm_mon = 12; + t.tm_year = 1969; + t.tm_wday = 3; + + rtc_set(&t); +#endif /* CONFIG_RTC_MPC5200 */ + +#ifdef CONFIG_PS2MULT + ps2mult_early_init(); +#endif /* CONFIG_PS2MULT */ + return (0); +} +#endif /* CONFIG_BOARD_EARLY_INIT_R */ + + +int last_stage_init (void) +{ + /* + * auto scan for really existing devices and re-set chip select + * configuration. + */ + u16 save, tmp; + int restore; + + /* + * Check for SRAM and SRAM size + */ + + /* save original SRAM content */ + save = *(volatile u16 *)CFG_CS2_START; + restore = 1; + + /* write test pattern to SRAM */ + *(volatile u16 *)CFG_CS2_START = 0xA5A5; + __asm__ volatile ("sync"); + /* + * Put a different pattern on the data lines: otherwise they may float + * long enough to read back what we wrote. + */ + tmp = *(volatile u16 *)CFG_FLASH_BASE; + if (tmp == 0xA5A5) + puts ("!! possible error in SRAM detection\n"); + + if (*(volatile u16 *)CFG_CS2_START != 0xA5A5) { + /* no SRAM at all, disable cs */ + *(vu_long *)MPC5XXX_ADDECR &= ~(1 << 18); + *(vu_long *)MPC5XXX_CS2_START = 0x0000FFFF; + *(vu_long *)MPC5XXX_CS2_STOP = 0x0000FFFF; + restore = 0; + __asm__ volatile ("sync"); + } else if (*(volatile u16 *)(CFG_CS2_START + (1<<19)) == 0xA5A5) { + /* make sure that we access a mirrored address */ + *(volatile u16 *)CFG_CS2_START = 0x1111; + __asm__ volatile ("sync"); + if (*(volatile u16 *)(CFG_CS2_START + (1<<19)) == 0x1111) { + /* SRAM size = 512 kByte */ + *(vu_long *)MPC5XXX_CS2_STOP = STOP_REG(CFG_CS2_START, + 0x80000); + __asm__ volatile ("sync"); + puts ("SRAM: 512 kB\n"); + } + else + puts ("!! possible error in SRAM detection\n"); + } else { + puts ("SRAM: 1 MB\n"); + } + /* restore origianl SRAM content */ + if (restore) { + *(volatile u16 *)CFG_CS2_START = save; + __asm__ volatile ("sync"); + } + + /* + * Check for Grafic Controller + */ + + /* save origianl FB content */ + save = *(volatile u16 *)CFG_CS1_START; + restore = 1; + + /* write test pattern to FB memory */ + *(volatile u16 *)CFG_CS1_START = 0xA5A5; + __asm__ volatile ("sync"); + /* + * Put a different pattern on the data lines: otherwise they may float + * long enough to read back what we wrote. + */ + tmp = *(volatile u16 *)CFG_FLASH_BASE; + if (tmp == 0xA5A5) + puts ("!! possible error in grafic controller detection\n"); + + if (*(volatile u16 *)CFG_CS1_START != 0xA5A5) { + /* no grafic controller at all, disable cs */ + *(vu_long *)MPC5XXX_ADDECR &= ~(1 << 17); + *(vu_long *)MPC5XXX_CS1_START = 0x0000FFFF; + *(vu_long *)MPC5XXX_CS1_STOP = 0x0000FFFF; + restore = 0; + __asm__ volatile ("sync"); + } else { + puts ("VGA: SMI501 (Voyager) with 8 MB\n"); + } + /* restore origianl FB content */ + if (restore) { + *(volatile u16 *)CFG_CS1_START = save; + __asm__ volatile ("sync"); + } + + return 0; +} + +#ifdef CONFIG_VIDEO_SM501 + +#define DISPLAY_WIDTH 640 +#define DISPLAY_HEIGHT 480 + +#ifdef CONFIG_VIDEO_SM501_8BPP +#error CONFIG_VIDEO_SM501_8BPP not supported. +#endif /* CONFIG_VIDEO_SM501_8BPP */ + +#ifdef CONFIG_VIDEO_SM501_16BPP +#error CONFIG_VIDEO_SM501_16BPP not supported. +#endif /* CONFIG_VIDEO_SM501_16BPP */ + +#ifdef CONFIG_VIDEO_SM501_32BPP +static const SMI_REGS init_regs [] = +{ +#if defined (CONFIG_BC3450_FP) && !defined (CONFIG_BC3450_CRT) + /* FP only */ + {0x00004, 0x0}, + {0x00048, 0x00021807}, + {0x0004C, 0x091a0a01}, + {0x00054, 0x1}, + {0x00040, 0x00021807}, + {0x00044, 0x091a0a01}, + {0x00054, 0x0}, + {0x80000, 0x01013106}, + {0x80004, 0xc428bb17}, + {0x80000, 0x03013106}, + {0x8000C, 0x00000000}, + {0x80010, 0x0a000a00}, + {0x80014, 0x02800000}, + {0x80018, 0x01e00000}, + {0x8001C, 0x00000000}, + {0x80020, 0x01e00280}, + {0x80024, 0x02fa027f}, + {0x80028, 0x004a028b}, + {0x8002C, 0x020c01df}, + {0x80030, 0x000201e9}, + {0x80200, 0x00010200}, + {0x80000, 0x0f013106}, +#elif defined (CONFIG_BC3450_CRT) && !defined (CONFIG_BC3450_FP) + /* CRT only */ + {0x00004, 0x0}, + {0x00048, 0x00021807}, + {0x0004C, 0x10090a01}, + {0x00054, 0x1}, + {0x00040, 0x00021807}, + {0x00044, 0x10090a01}, + {0x00054, 0x0}, + {0x80200, 0x00010000}, + {0x80204, 0x0}, + {0x80208, 0x0A000A00}, + {0x8020C, 0x02fa027f}, + {0x80210, 0x004a028b}, + {0x80214, 0x020c01df}, + {0x80218, 0x000201e9}, + {0x80200, 0x00013306}, +#else /* panel + CRT */ + {0x00004, 0x0}, + {0x00048, 0x00021807}, + {0x0004C, 0x091a0a01}, + {0x00054, 0x1}, + {0x00040, 0x00021807}, + {0x00044, 0x091a0a01}, + {0x00054, 0x0}, + {0x80000, 0x0f013106}, + {0x80004, 0xc428bb17}, + {0x8000C, 0x00000000}, + {0x80010, 0x0a000a00}, + {0x80014, 0x02800000}, + {0x80018, 0x01e00000}, + {0x8001C, 0x00000000}, + {0x80020, 0x01e00280}, + {0x80024, 0x02fa027f}, + {0x80028, 0x004a028b}, + {0x8002C, 0x020c01df}, + {0x80030, 0x000201e9}, + {0x80200, 0x00010000}, +#endif + {0, 0} +}; +#endif /* CONFIG_VIDEO_SM501_32BPP */ + +#ifdef CONFIG_CONSOLE_EXTRA_INFO +/* + * Return text to be printed besides the logo. + */ +void video_get_info_str (int line_number, char *info) +{ + if (line_number == 1) { +#if defined (CONFIG_TQM5200) + strcpy (info, " Board: TQM5200 (TQ-Components GmbH)"); +#else +#error No supported board selected +#endif /* CONFIG_TQM5200 */ + +#if defined (CONFIG_BC3450) + } else if (line_number == 2) { + strcpy (info, " Dev: GERSYS BC3450"); +#endif /* CONFIG_BC3450 */ + } + else { + info [0] = '\0'; + } +} +#endif + +/* + * Returns SM501 register base address. First thing called in the + * driver. Checks if SM501 is physically present. + */ +unsigned int board_video_init (void) +{ + u16 save, tmp; + int restore, ret; + + /* + * Check for Grafic Controller + */ + + /* save origianl FB content */ + save = *(volatile u16 *)CFG_CS1_START; + restore = 1; + + /* write test pattern to FB memory */ + *(volatile u16 *)CFG_CS1_START = 0xA5A5; + __asm__ volatile ("sync"); + /* + * Put a different pattern on the data lines: otherwise they may float + * long enough to read back what we wrote. + */ + tmp = *(volatile u16 *)CFG_FLASH_BASE; + if (tmp == 0xA5A5) + puts ("!! possible error in grafic controller detection\n"); + + if (*(volatile u16 *)CFG_CS1_START != 0xA5A5) { + /* no grafic controller found */ + restore = 0; + ret = 0; + } else { + ret = SM501_MMIO_BASE; + } + + if (restore) { + *(volatile u16 *)CFG_CS1_START = save; + __asm__ volatile ("sync"); + } + return ret; +} + +/* + * Returns SM501 framebuffer address + */ +unsigned int board_video_get_fb (void) +{ + return SM501_FB_BASE; +} + +/* + * Called after initializing the SM501 and before clearing the screen. + */ +void board_validate_screen (unsigned int base) +{ +} + +/* + * Return a pointer to the initialization sequence. + */ +const SMI_REGS *board_get_regs (void) +{ + return init_regs; +} + +int board_get_width (void) +{ + return DISPLAY_WIDTH; +} + +int board_get_height (void) +{ + return DISPLAY_HEIGHT; +} + +#endif /* CONFIG_VIDEO_SM501 */ |