/* * This file is subject to the terms and conditions of the GNU General Public * License. See the file "COPYING" in the main directory of this archive * for more details. * * Copyright (C) 2010 Gabor Juhos <juhosg@openwrt.org> */ #include <linux/mm.h> #include <linux/io.h> #include <linux/serial_reg.h> #include <asm/setup.h> #include "devices.h" #include "ar2315_regs.h" #include "ar5312_regs.h" static inline void prom_uart_wr(void __iomem *base, unsigned reg, unsigned char ch) { __raw_writel(ch, base + 4 * reg); } static inline unsigned char prom_uart_rr(void __iomem *base, unsigned reg) { return __raw_readl(base + 4 * reg); } void prom_putchar(char ch) { static void __iomem *base; if (unlikely(base == NULL)) { if (is_ar2315()) base = (void __iomem *)(KSEG1ADDR(AR2315_UART0_BASE)); else base = (void __iomem *)(KSEG1ADDR(AR5312_UART0_BASE)); } while ((prom_uart_rr(base, UART_LSR) & UART_LSR_THRE) == 0) ; prom_uart_wr(base, UART_TX, (unsigned char)ch); while ((prom_uart_rr(base, UART_LSR) & UART_LSR_THRE) == 0) ; }