diff options
Diffstat (limited to 'target/linux/brcm47xx/patches-3.10/080-MIPS-Add-8250-16550-serial-early-printk-driver.patch')
| -rw-r--r-- | target/linux/brcm47xx/patches-3.10/080-MIPS-Add-8250-16550-serial-early-printk-driver.patch | 124 |
1 files changed, 0 insertions, 124 deletions
diff --git a/target/linux/brcm47xx/patches-3.10/080-MIPS-Add-8250-16550-serial-early-printk-driver.patch b/target/linux/brcm47xx/patches-3.10/080-MIPS-Add-8250-16550-serial-early-printk-driver.patch deleted file mode 100644 index bfbe43be5b..0000000000 --- a/target/linux/brcm47xx/patches-3.10/080-MIPS-Add-8250-16550-serial-early-printk-driver.patch +++ /dev/null @@ -1,124 +0,0 @@ -commit 0a76092a63809a0e72e3e9552acadf42869c0293 -Author: Yoichi Yuasa <yuasa@linux-mips.org> -Date: Mon Feb 8 20:59:39 2010 +0900 - - MIPS: Add 8250/16550 serial early printk driver - - Signed-off-by: Yoichi Yuasa <yuasa@linux-mips.org> - Cc: linux-mips <linux-mips@linux-mips.org> - Patchwork: https://patchwork.linux-mips.org/patch/947/ - Signed-off-by: Ralf Baechle <ralf@linux-mips.org> - ---- a/arch/mips/Kconfig.debug -+++ b/arch/mips/Kconfig.debug -@@ -20,6 +20,14 @@ config EARLY_PRINTK - doesn't cooperate with an X server. You should normally say N here, - unless you want to debug such a crash. - -+config EARLY_PRINTK_8250 -+ bool "8250/16550 and compatible serial early printk driver" -+ depends on EARLY_PRINTK -+ default n -+ help -+ If you say Y here, it will be possible to use a 8250/16550 serial -+ port as the boot console. -+ - config CMDLINE_BOOL - bool "Built-in kernel command line" - default n ---- a/arch/mips/include/asm/setup.h -+++ b/arch/mips/include/asm/setup.h -@@ -5,6 +5,14 @@ - - extern void setup_early_printk(void); - -+#ifdef CONFIG_EARLY_PRINTK_8250 -+extern void setup_8250_early_printk_port(unsigned long base, -+ unsigned int reg_shift, unsigned int timeout); -+#else -+static inline void setup_8250_early_printk_port(unsigned long base, -+ unsigned int reg_shift, unsigned int timeout) {} -+#endif -+ - extern void set_handler(unsigned long offset, void *addr, unsigned long len); - extern void set_uncached_handler(unsigned long offset, void *addr, unsigned long len); - ---- a/arch/mips/kernel/Makefile -+++ b/arch/mips/kernel/Makefile -@@ -84,6 +84,7 @@ obj-$(CONFIG_GPIO_TXX9) += gpio_txx9.o - obj-$(CONFIG_KEXEC) += machine_kexec.o relocate_kernel.o crash.o - obj-$(CONFIG_CRASH_DUMP) += crash_dump.o - obj-$(CONFIG_EARLY_PRINTK) += early_printk.o -+obj-$(CONFIG_EARLY_PRINTK_8250) += early_printk_8250.o - obj-$(CONFIG_SPINLOCK_TEST) += spinlock_test.o - obj-$(CONFIG_MIPS_MACHINE) += mips_machine.o - ---- /dev/null -+++ b/arch/mips/kernel/early_printk_8250.c -@@ -0,0 +1,66 @@ -+/* -+ * 8250/16550-type serial ports prom_putchar() -+ * -+ * Copyright (C) 2010 Yoichi Yuasa <yuasa@linux-mips.org> -+ * -+ * 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA -+ */ -+#include <linux/io.h> -+#include <linux/serial_core.h> -+#include <linux/serial_reg.h> -+ -+static void __iomem *serial8250_base; -+static unsigned int serial8250_reg_shift; -+static unsigned int serial8250_tx_timeout; -+ -+void setup_8250_early_printk_port(unsigned long base, unsigned int reg_shift, -+ unsigned int timeout) -+{ -+ serial8250_base = (void __iomem *)base; -+ serial8250_reg_shift = reg_shift; -+ serial8250_tx_timeout = timeout; -+} -+ -+static inline u8 serial_in(int offset) -+{ -+ return readb(serial8250_base + (offset << serial8250_reg_shift)); -+} -+ -+static inline void serial_out(int offset, char value) -+{ -+ writeb(value, serial8250_base + (offset << serial8250_reg_shift)); -+} -+ -+void prom_putchar(char c) -+{ -+ unsigned int timeout; -+ int status, bits; -+ -+ if (!serial8250_base) -+ return; -+ -+ timeout = serial8250_tx_timeout; -+ bits = UART_LSR_TEMT | UART_LSR_THRE; -+ -+ do { -+ status = serial_in(UART_LSR); -+ -+ if (--timeout == 0) -+ break; -+ } while ((status & bits) != bits); -+ -+ if (timeout) -+ serial_out(UART_TX, c); -+} |