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authorJohn Crispin <john@openwrt.org>2013-04-03 09:58:44 +0000
committerJohn Crispin <john@openwrt.org>2013-04-03 09:58:44 +0000
commitd4db00205d726f9faca3147cb345518ec5406aab (patch)
tree2e4466b8176c978c765dfeac1ea5f6ab5a0a203a /target/linux/ramips/files-3.7/arch/mips/ralink/rt305x/early_printk.c
parent86a691144b4988d2ebfb78834b608dec51b53a33 (diff)
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move files to files-3.7
Signed-off-by: John Crispin <blogic@openwrt.org> SVN-Revision: 36161
Diffstat (limited to 'target/linux/ramips/files-3.7/arch/mips/ralink/rt305x/early_printk.c')
-rw-r--r--target/linux/ramips/files-3.7/arch/mips/ralink/rt305x/early_printk.c29
1 files changed, 29 insertions, 0 deletions
diff --git a/target/linux/ramips/files-3.7/arch/mips/ralink/rt305x/early_printk.c b/target/linux/ramips/files-3.7/arch/mips/ralink/rt305x/early_printk.c
new file mode 100644
index 0000000000..602df863ef
--- /dev/null
+++ b/target/linux/ramips/files-3.7/arch/mips/ralink/rt305x/early_printk.c
@@ -0,0 +1,29 @@
+/*
+ * Ralink RT305x SoC early printk support
+ *
+ * Copyright (C) 2009 Gabor Juhos <juhosg@openwrt.org>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published
+ * by the Free Software Foundation.
+ */
+
+#include <linux/io.h>
+#include <linux/serial_reg.h>
+
+#include <asm/addrspace.h>
+
+#include <asm/mach-ralink/rt305x_regs.h>
+
+#define UART_READ(r) \
+ __raw_readl((void __iomem *)(KSEG1ADDR(RT305X_UART1_BASE) + 4 * (r)))
+
+#define UART_WRITE(r, v) \
+ __raw_writel((v), (void __iomem *)(KSEG1ADDR(RT305X_UART1_BASE) + 4 * (r)))
+
+void prom_putchar(unsigned char ch)
+{
+ while (((UART_READ(UART_REG_LSR)) & UART_LSR_THRE) == 0);
+ UART_WRITE(UART_REG_TX, ch);
+ while (((UART_READ(UART_REG_LSR)) & UART_LSR_THRE) == 0);
+}