1/* 2 * Host bridge init code for the Marvell/Galileo EV-64260-BP evaluation board 3 * with a GT64260 onboard. 4 * 5 * Author: Mark A. Greer <mgreer@mvista.com> 6 * 7 * 2001 (c) MontaVista Software, Inc. This file is licensed under 8 * the terms of the GNU General Public License version 2. This program 9 * is licensed "as is" without any warranty of any kind, whether express 10 * or implied. 11 */ 12 13#include <linux/types.h> 14#include <asm/reg.h> 15#include <asm/io.h> 16#include <asm/mv64x60_defs.h> 17#include <platforms/ev64260.h> 18 19#ifdef CONFIG_SERIAL_MPSC_CONSOLE 20extern u32 mv64x60_console_baud; 21extern u32 mv64x60_mpsc_clk_src; 22extern u32 mv64x60_mpsc_clk_freq; 23#endif 24 25void 26mv64x60_board_init(void __iomem *old_base, void __iomem *new_base) 27{ 28 u32 p, v; 29 30 /* DINK doesn't enable 745x timebase, so enable here (Adrian Cox) */ 31 p = mfspr(SPRN_PVR); 32 p >>= 16; 33 34 /* Reasonable SWAG at a 745x PVR value */ 35 if (((p & 0xfff0) == 0x8000) && (p != 0x800c)) { 36 v = mfspr(SPRN_HID0); 37 v |= HID0_TBEN; 38 mtspr(SPRN_HID0, v); 39 } 40 41#ifdef CONFIG_SERIAL_8250_CONSOLE 42 /* 43 * Change device bus 2 window so that bootoader can do I/O thru 44 * 8250/16550 UART that's mapped in that window. 45 */ 46 out_le32(new_base + MV64x60_CPU2DEV_2_BASE, EV64260_UART_BASE >> 20); 47 out_le32(new_base + MV64x60_CPU2DEV_2_SIZE, EV64260_UART_END >> 20); 48 __asm__ __volatile__("sync"); 49#elif defined(CONFIG_SERIAL_MPSC_CONSOLE) 50 mv64x60_console_baud = EV64260_DEFAULT_BAUD; 51 mv64x60_mpsc_clk_src = EV64260_MPSC_CLK_SRC; 52 mv64x60_mpsc_clk_freq = EV64260_MPSC_CLK_FREQ; 53#endif 54} 55