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u-boot/arch/arm/mach-uniphier/arm32/debug_ll.S

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ARM: uniphier: unify low-level debug init code Move init code of low-level debug into a single file. This is helpful to create an image that runs on multiple SoCs. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2015-09-21 15:27:37 +00:00
/*
* 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/serial_reg.h>
#include <linux/linkage.h>
ARM: uniphier: move headers out of include/mach directory These headers are only included locally in arch/arm/mach-uniphier/. There is no reason to export them by putting in the mach/ directory. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2016-01-08 16:51:13 +00:00
ARM: uniphier: prepare directory structure for ARMv8 SoC support Before adding ARMv8 support, this commit refactors the directory structure. Move ARMv7 specific files to arch/arm/mach-uniphier/arm32 to avoid a mess by mixture of ARMv7 and ARMv8 code. Also move the "select CPU_V7" to the lower-level menu because we will have to select ARM64 instead of CPU_V7 for ARMv8 SoCs. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2016-02-26 09:59:44 +00:00
#include "../bcu/bcu-regs.h"
#include "../sc-regs.h"
#include "../sg-regs.h"
ARM: uniphier: unify low-level debug init code Move init code of low-level debug into a single file. This is helpful to create an image that runs on multiple SoCs. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2015-09-21 15:27:37 +00:00
#if !defined(CONFIG_DEBUG_SEMIHOSTING)
#include CONFIG_DEBUG_LL_INCLUDE
#endif
#define BAUDRATE 115200
#define DIV_ROUND(x, d) (((x) + ((d) / 2)) / (d))
ENTRY(debug_ll_init)
ldr r0, =SG_REVISION
ldr r1, [r0]
and r1, r1, #SG_REVISION_TYPE_MASK
mov r1, r1, lsr #SG_REVISION_TYPE_SHIFT
#if defined(CONFIG_ARCH_UNIPHIER_PH1_SLD3)
#define PH1_SLD3_UART_CLK 36864000
cmp r1, #0x25
bne ph1_sld3_end
sg_set_pinsel 64, 1, 4, 4, r0, r1 @ TXD0 -> TXD0
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]
ldr r3, =DIV_ROUND(PH1_SLD3_UART_CLK, 16 * BAUDRATE)
b init_uart
ph1_sld3_end:
#endif
#if defined(CONFIG_ARCH_UNIPHIER_PH1_LD4)
#define PH1_LD4_UART_CLK 36864000
cmp r1, #0x26
bne ph1_ld4_end
ldr r0, =SG_IECTRL
ldr r1, [r0]
orr r1, r1, #1
str r1, [r0]
sg_set_pinsel 88, 1, 8, 4, r0, r1 @ HSDOUT6 -> TXD0
ldr r3, =DIV_ROUND(PH1_LD4_UART_CLK, 16 * BAUDRATE)
b init_uart
ph1_ld4_end:
#endif
#if defined(CONFIG_ARCH_UNIPHIER_PH1_PRO4)
#define PH1_PRO4_UART_CLK 73728000
cmp r1, #0x28
bne ph1_pro4_end
sg_set_pinsel 128, 0, 4, 8, r0, r1 @ TXD0 -> TXD0
ldr r0, =SG_LOADPINCTRL
mov r1, #1
str r1, [r0]
ldr r0, =SC_CLKCTRL
ldr r1, [r0]
orr r1, r1, #SC_CLKCTRL_CEN_PERI
str r1, [r0]
ldr r3, =DIV_ROUND(PH1_PRO4_UART_CLK, 16 * BAUDRATE)
b init_uart
ph1_pro4_end:
#endif
#if defined(CONFIG_ARCH_UNIPHIER_PH1_SLD8)
#define PH1_SLD8_UART_CLK 80000000
cmp r1, #0x29
bne ph1_sld8_end
ldr r0, =SG_IECTRL
ldr r1, [r0]
orr r1, r1, #1
str r1, [r0]
sg_set_pinsel 70, 3, 8, 4, r0, r1 @ HSDOUT0 -> TXD0
ldr r3, =DIV_ROUND(PH1_SLD8_UART_CLK, 16 * BAUDRATE)
b init_uart
ph1_sld8_end:
#endif
ARM: uniphier: add PH1-Pro5 support The DDR SDRAM initialization code has not been mainlined yet, but U-Boot proper should work. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2015-09-21 15:27:40 +00:00
#if defined(CONFIG_ARCH_UNIPHIER_PH1_PRO5)
#define PH1_PRO5_UART_CLK 73728000
cmp r1, #0x2A
bne ph1_pro5_end
sg_set_pinsel 47, 0, 4, 8, r0, r1 @ TXD0 -> TXD0
sg_set_pinsel 49, 0, 4, 8, r0, r1 @ TXD1 -> TXD1
sg_set_pinsel 51, 0, 4, 8, r0, r1 @ TXD2 -> TXD2
sg_set_pinsel 53, 0, 4, 8, r0, r1 @ TXD3 -> TXD3
ldr r0, =SG_LOADPINCTRL
mov r1, #1
str r1, [r0]
ldr r0, =SC_CLKCTRL
ldr r1, [r0]
orr r1, r1, #SC_CLKCTRL_CEN_PERI
str r1, [r0]
ldr r3, =DIV_ROUND(PH1_PRO5_UART_CLK, 16 * BAUDRATE)
b init_uart
ph1_pro5_end:
#endif
ARM: uniphier: add ProXstream2 and PH1-LD6b support The DDR SDRAM initialization code has not been mainlined yet, but U-Boot proper should work. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2015-09-21 15:27:41 +00:00
#if defined(CONFIG_ARCH_UNIPHIER_PROXSTREAM2)
#define PROXSTREAM2_UART_CLK 88900000
cmp r1, #0x2E
bne proxstream2_end
ldr r0, =SG_IECTRL
ldr r1, [r0]
orr r1, r1, #1
str r1, [r0]
sg_set_pinsel 217, 8, 8, 4, r0, r1 @ TXD0 -> TXD0
sg_set_pinsel 115, 8, 8, 4, r0, r1 @ TXD1 -> TXD1
sg_set_pinsel 113, 8, 8, 4, r0, r1 @ TXD2 -> TXD2
sg_set_pinsel 219, 8, 8, 4, r0, r1 @ TXD3 -> TXD3
ldr r0, =SC_CLKCTRL
ldr r1, [r0]
orr r1, r1, #SC_CLKCTRL_CEN_PERI
str r1, [r0]
ldr r3, =DIV_ROUND(PROXSTREAM2_UART_CLK, 16 * BAUDRATE)
b init_uart
proxstream2_end:
#endif
#if defined(CONFIG_ARCH_UNIPHIER_PH1_LD6B)
#define PH1_LD6B_UART_CLK 88900000
cmp r1, #0x2F
bne ph1_ld6b_end
ldr r0, =SG_IECTRL
ldr r1, [r0]
orr r1, r1, #1
str r1, [r0]
sg_set_pinsel 135, 3, 8, 4, r0, r1 @ PORT10 -> TXD0
sg_set_pinsel 115, 0, 8, 4, r0, r1 @ TXD1 -> TXD1
sg_set_pinsel 113, 2, 8, 4, r0, r1 @ SBO0 -> TXD2
ldr r0, =SC_CLKCTRL
ldr r1, [r0]
orr r1, r1, #SC_CLKCTRL_CEN_PERI
str r1, [r0]
ldr r3, =DIV_ROUND(PH1_LD6B_UART_CLK, 16 * BAUDRATE)
b init_uart
ph1_ld6b_end:
#endif
ARM: uniphier: allow debug_ll_init() to do nothing for unknown SoCs This function should just return for unknown SoCs rather than writing unexpected values to registers. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2016-03-07 11:29:41 +00:00
mov pc, lr
ARM: uniphier: unify low-level debug init code Move init code of low-level debug into a single file. This is helpful to create an image that runs on multiple SoCs. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2015-09-21 15:27:37 +00:00
init_uart:
addruart r0, r1, r2
mov r1, #UART_LCR_WLEN8 << 8
str r1, [r0, #0x10]
str r3, [r0, #0x24]
mov pc, lr
ENDPROC(debug_ll_init)
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