--- /dev/null
+/*
+ * (C) Copyright 2000-2003
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ * modified by Wolfgang Wegner <w.wegner@astro-kom.de> for ASTRO 5373l
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#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;
+}
Code Review / kvmfornfv.git / blobdiff