diff options
Diffstat (limited to 'arch/arm/mach-uniphier/ph1-sld3/lowlevel_debug.S')
| -rw-r--r-- | arch/arm/mach-uniphier/ph1-sld3/lowlevel_debug.S | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/arch/arm/mach-uniphier/ph1-sld3/lowlevel_debug.S b/arch/arm/mach-uniphier/ph1-sld3/lowlevel_debug.S new file mode 100644 index 0000000000..9d1fd2c964 --- /dev/null +++ b/arch/arm/mach-uniphier/ph1-sld3/lowlevel_debug.S @@ -0,0 +1,31 @@ +/* + * On-chip UART initializaion for low-level debugging + * + * Copyright (C) 2014-2015 Masahiro Yamada <yamada.masahiro@socionext.com> + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <linux/linkage.h> +#include <mach/bcu-regs.h> +#include <mach/sc-regs.h> +#include <mach/sg-regs.h> +#include <mach/debug-uart.S> + +ENTRY(setup_lowlevel_debug) + ldr r0, =BCSCR5 + ldr r1, =0x24440000 + str r1, [r0] + + ldr r0, =SC_CLKCTRL + ldr r1, [r0] + orr r1, r1, #SC_CLKCTRL_CEN_PERI + str r1, [r0] + + init_debug_uart r0, r1, r2 + + set_pinsel 63, 0, r0, r1 + set_pinsel 64, 1, r0, r1 + + mov pc, lr +ENDPROC(setup_lowlevel_debug) |
