diff options
Diffstat (limited to 'board/astro/mcf5373l/mcf5373l.c')
| -rw-r--r-- | board/astro/mcf5373l/mcf5373l.c | 211 |
1 files changed, 211 insertions, 0 deletions
diff --git a/board/astro/mcf5373l/mcf5373l.c b/board/astro/mcf5373l/mcf5373l.c new file mode 100644 index 0000000..3c09a21 --- /dev/null +++ b/board/astro/mcf5373l/mcf5373l.c @@ -0,0 +1,211 @@ +/* + * (C) Copyright 2000-2003 + * Wolfgang Denk, DENX Software Engineering, wd@denx.de. + * modified by Wolfgang Wegner <w.wegner@astro-kom.de> for ASTRO 5373l + * + * 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 <watchdog.h> +#include <command.h> +#include <asm/m5329.h> +#include <asm/immap_5329.h> +#include <asm/io.h> + +/* needed for astro bus: */ +#include <asm/uart.h> +#include "astro.h" + +DECLARE_GLOBAL_DATA_PTR; +extern void uart_port_conf(void); + +int checkboard(void) +{ + puts("Board: "); + puts("ASTRO MCF5373L (Urmel) Board\n"); + return 0; +} + +phys_size_t initdram(int board_type) +{ +#if !defined(CONFIG_MONITOR_IS_IN_RAM) + sdram_t *sdp = (sdram_t *)(MMAP_SDRAM); + + /* + * GPIO configuration for bus should be set correctly from reset, + * so we do not care! First, set up address space: at this point, + * we should be running from internal SRAM; + * so use CONFIG_SYS_SDRAM_BASE as the base address for SDRAM, + * and do not care where it is + */ + __raw_writel((CONFIG_SYS_SDRAM_BASE & 0xFFF00000) | 0x00000018, + &sdp->cs0); + __raw_writel((CONFIG_SYS_SDRAM_BASE & 0xFFF00000) | 0x00000000, + &sdp->cs1); + /* + * I am not sure from the data sheet, but it seems burst length + * has to be 8 for the 16 bit data bus we use; + * so these values are for BL = 8 + */ + __raw_writel(0x33211530, &sdp->cfg1); + __raw_writel(0x56570000, &sdp->cfg2); + /* send PrechargeALL, REF and IREF remain cleared! */ + __raw_writel(0xE1462C02, &sdp->ctrl); + udelay(1); + /* refresh SDRAM twice */ + __raw_writel(0xE1462C04, &sdp->ctrl); + udelay(1); + __raw_writel(0xE1462C04, &sdp->ctrl); + /* init MR */ + __raw_writel(0x008D0000, &sdp->mode); + /* initialize EMR */ + __raw_writel(0x80010000, &sdp->mode); + /* wait until DLL is locked */ + udelay(1); + /* + * enable automatic refresh, lock mode register, + * clear iref and ipall + */ + __raw_writel(0x71462C00, &sdp->ctrl); + /* Dummy write to start SDRAM */ + writel(0, CONFIG_SYS_SDRAM_BASE); +#endif + + /* + * for get_ram_size() to work, both CS areas have to be + * configured, i.e. CS1 has to be explicitely disabled, else + * probing for memory will cause the SDRAM bus to hang! + * (Do not rely on the SDCS register(s) being set to 0x00000000 + * during reset as stated in the data sheet.) + */ + return get_ram_size((unsigned long *)CONFIG_SYS_SDRAM_BASE, + 0x80000000 - CONFIG_SYS_SDRAM_BASE); +} + +#define UART_BASE MMAP_UART0 +int rs_serial_init(int port, int baud) +{ + uart_t *uart; + u32 counter; + + switch (port) { + case 0: + uart = (uart_t *)(MMAP_UART0); + break; + case 1: + uart = (uart_t *)(MMAP_UART1); + break; + case 2: + uart = (uart_t *)(MMAP_UART2); + break; + default: + uart = (uart_t *)(MMAP_UART0); + } + + uart_port_conf(); + + /* write to SICR: SIM2 = uart mode,dcd does not affect rx */ + writeb(UART_UCR_RESET_RX, &uart->ucr); + writeb(UART_UCR_RESET_TX, &uart->ucr); + writeb(UART_UCR_RESET_ERROR, &uart->ucr); + writeb(UART_UCR_RESET_MR, &uart->ucr); + __asm__ ("nop"); + + writeb(0, &uart->uimr); + + /* write to CSR: RX/TX baud rate from timers */ + writeb(UART_UCSR_RCS_SYS_CLK | UART_UCSR_TCS_SYS_CLK, &uart->ucsr); + + writeb(UART_UMR_BC_8 | UART_UMR_PM_NONE, &uart->umr); + writeb(UART_UMR_SB_STOP_BITS_1, &uart->umr); + + /* Setting up BaudRate */ + counter = (u32) (gd->bus_clk / (baud)); + counter >>= 5; + + /* write to CTUR: divide counter upper byte */ + writeb((u8) ((counter & 0xff00) >> 8), &uart->ubg1); + /* write to CTLR: divide counter lower byte */ + writeb((u8) (counter & 0x00ff), &uart->ubg2); + + writeb(UART_UCR_RX_ENABLED | UART_UCR_TX_ENABLED, &uart->ucr); + + return 0; +} + +void astro_put_char(char ch) +{ + uart_t *uart; + unsigned long timer; + + uart = (uart_t *)(MMAP_UART0); + /* + * Wait for last character to go. Timeout of 6ms should + * be enough for our lowest baud rate of 2400. + */ + timer = get_timer(0); + while (get_timer(timer) < 6) { + if (readb(&uart->usr) & UART_USR_TXRDY) + break; + } + writeb(ch, &uart->utb); + + return; +} + +int astro_is_char(void) +{ + uart_t *uart; + + uart = (uart_t *)(MMAP_UART0); + return readb(&uart->usr) & UART_USR_RXRDY; +} + +int astro_get_char(void) +{ + uart_t *uart; + + uart = (uart_t *)(MMAP_UART0); + while (!(readb(&uart->usr) & UART_USR_RXRDY)) ; + return readb(&uart->urb); +} + +int misc_init_r(void) +{ + int retval = 0; + + puts("Configure Xilinx FPGA..."); + retval = astro5373l_xilinx_load(); + if (!retval) { + puts("failed!\n"); + return retval; + } + puts("done\n"); + + puts("Configure Altera FPGA..."); + retval = astro5373l_altera_load(); + if (!retval) { + puts("failed!\n"); + return retval; + } + puts("done\n"); + + return retval; +} |