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authorMasahiro Yamada <yamada.masahiro@socionext.com>2015-09-22 00:27:37 +0900
committerMasahiro Yamada <yamada.masahiro@socionext.com>2015-09-25 00:27:53 +0900
commite6eecca54ffb99ee6877c0e29b0b389a481fcd85 (patch)
tree5ef8a962055e8c99f2162331259c01591ea237e7 /arch/arm
parentfcbcd59730255018dbe78af9294598273a85a0de (diff)
downloadtalos-obmc-uboot-e6eecca54ffb99ee6877c0e29b0b389a481fcd85.tar.gz
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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>
Diffstat (limited to 'arch/arm')
-rw-r--r--arch/arm/mach-uniphier/Makefile2
-rw-r--r--arch/arm/mach-uniphier/debug_ll.S112
-rw-r--r--arch/arm/mach-uniphier/include/mach/debug-uart.S23
-rw-r--r--arch/arm/mach-uniphier/lowlevel_init.S2
-rw-r--r--arch/arm/mach-uniphier/ph1-ld4/Makefile1
-rw-r--r--arch/arm/mach-uniphier/ph1-ld4/lowlevel_debug.S29
-rw-r--r--arch/arm/mach-uniphier/ph1-pro4/Makefile1
-rw-r--r--arch/arm/mach-uniphier/ph1-pro4/lowlevel_debug.S34
-rw-r--r--arch/arm/mach-uniphier/ph1-sld3/Makefile1
-rw-r--r--arch/arm/mach-uniphier/ph1-sld3/lowlevel_debug.S33
-rw-r--r--arch/arm/mach-uniphier/ph1-sld8/lowlevel_debug.S29
11 files changed, 115 insertions, 152 deletions
diff --git a/arch/arm/mach-uniphier/Makefile b/arch/arm/mach-uniphier/Makefile
index d30cc27009..5c2ccbd7a8 100644
--- a/arch/arm/mach-uniphier/Makefile
+++ b/arch/arm/mach-uniphier/Makefile
@@ -10,6 +10,8 @@ obj-y += spl.o
obj-y += memconf.o
obj-y += ddrphy_training.o
+obj-$(CONFIG_DEBUG_LL) += debug_ll.o
+
else
obj-y += late_lowlevel_init.o
diff --git a/arch/arm/mach-uniphier/debug_ll.S b/arch/arm/mach-uniphier/debug_ll.S
new file mode 100644
index 0000000000..d5ccad3244
--- /dev/null
+++ b/arch/arm/mach-uniphier/debug_ll.S
@@ -0,0 +1,112 @@
+/*
+ * 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>
+#include <mach/bcu-regs.h>
+#include <mach/sc-regs.h>
+#include <mach/sg-regs.h>
+
+#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
+
+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)
diff --git a/arch/arm/mach-uniphier/include/mach/debug-uart.S b/arch/arm/mach-uniphier/include/mach/debug-uart.S
deleted file mode 100644
index d2b431f544..0000000000
--- a/arch/arm/mach-uniphier/include/mach/debug-uart.S
+++ /dev/null
@@ -1,23 +0,0 @@
-/*
- * Copyright (C) 2014-2015 Masahiro Yamada <yamada.masahiro@socionext.com>
- *
- * SPDX-License-Identifier: GPL-2.0+
- */
-
-#include <linux/serial_reg.h>
-
-#if !defined(CONFIG_DEBUG_SEMIHOSTING)
-#include CONFIG_DEBUG_LL_INCLUDE
-#endif
-
-#define BAUDRATE 115200
-#define DIV_ROUND(x, d) (((x) + ((d) / 2)) / (d))
-#define DIVISOR DIV_ROUND(UART_CLK, 16 * BAUDRATE)
-
- .macro init_debug_uart, ra, rb, rc
- addruart \ra, \rb, \rc
- mov \rb, #UART_LCR_WLEN8 << 8
- str \rb, [\ra, #0x10]
- ldr \rb, =DIVISOR
- str \rb, [\ra, #0x24]
- .endm
diff --git a/arch/arm/mach-uniphier/lowlevel_init.S b/arch/arm/mach-uniphier/lowlevel_init.S
index 9259bafed0..66cad42dde 100644
--- a/arch/arm/mach-uniphier/lowlevel_init.S
+++ b/arch/arm/mach-uniphier/lowlevel_init.S
@@ -27,7 +27,7 @@ ENTRY(lowlevel_init)
mcr p15, 0, r0, c1, c0, 0
#ifdef CONFIG_DEBUG_LL
- bl setup_lowlevel_debug
+ bl debug_ll_init
#endif
/*
diff --git a/arch/arm/mach-uniphier/ph1-ld4/Makefile b/arch/arm/mach-uniphier/ph1-ld4/Makefile
index 4a2c944aee..4b9fe91fb0 100644
--- a/arch/arm/mach-uniphier/ph1-ld4/Makefile
+++ b/arch/arm/mach-uniphier/ph1-ld4/Makefile
@@ -3,7 +3,6 @@
#
ifdef CONFIG_SPL_BUILD
-obj-$(CONFIG_DEBUG_LL) += lowlevel_debug.o
obj-y += bcu_init.o pll_init.o early_clkrst_init.o \
pll_spectrum.o umc_init.o ddrphy_init.o
obj-$(CONFIG_MICRO_SUPPORT_CARD) += sbc_init.o
diff --git a/arch/arm/mach-uniphier/ph1-ld4/lowlevel_debug.S b/arch/arm/mach-uniphier/ph1-ld4/lowlevel_debug.S
deleted file mode 100644
index c0f14e08b1..0000000000
--- a/arch/arm/mach-uniphier/ph1-ld4/lowlevel_debug.S
+++ /dev/null
@@ -1,29 +0,0 @@
-/*
- * On-chip UART initializaion for low-level debugging
- *
- * Copyright (C) 2014 Panasonic Corporation
- * Author: Masahiro Yamada <yamada.m@jp.panasonic.com>
- *
- * SPDX-License-Identifier: GPL-2.0+
- */
-
-#include <linux/linkage.h>
-#include <mach/sg-regs.h>
-
-#define UART_CLK 36864000
-#include <mach/debug-uart.S>
-
-ENTRY(setup_lowlevel_debug)
- ldr r0, =SG_IECTRL
- ldr r1, [r0]
- orr r1, r1, #1
- str r1, [r0]
-
- /* UART Port 0 */
- sg_set_pinsel 85, 1, 8, 4, r0, r1
- sg_set_pinsel 88, 1, 8, 4, r0, r1
-
- init_debug_uart r0, r1, r2
-
- mov pc, lr
-ENDPROC(setup_lowlevel_debug)
diff --git a/arch/arm/mach-uniphier/ph1-pro4/Makefile b/arch/arm/mach-uniphier/ph1-pro4/Makefile
index a52b5aa556..e8b2c9e8ac 100644
--- a/arch/arm/mach-uniphier/ph1-pro4/Makefile
+++ b/arch/arm/mach-uniphier/ph1-pro4/Makefile
@@ -3,7 +3,6 @@
#
ifdef CONFIG_SPL_BUILD
-obj-$(CONFIG_DEBUG_LL) += lowlevel_debug.o
obj-y += pll_init.o early_clkrst_init.o \
pll_spectrum.o umc_init.o ddrphy_init.o
obj-$(CONFIG_MICRO_SUPPORT_CARD) += sbc_init.o
diff --git a/arch/arm/mach-uniphier/ph1-pro4/lowlevel_debug.S b/arch/arm/mach-uniphier/ph1-pro4/lowlevel_debug.S
deleted file mode 100644
index 56f3851043..0000000000
--- a/arch/arm/mach-uniphier/ph1-pro4/lowlevel_debug.S
+++ /dev/null
@@ -1,34 +0,0 @@
-/*
- * On-chip UART initializaion for low-level debugging
- *
- * Copyright (C) 2014 Panasonic Corporation
- * Author: Masahiro Yamada <yamada.m@jp.panasonic.com>
- *
- * SPDX-License-Identifier: GPL-2.0+
- */
-
-#include <linux/linkage.h>
-#include <mach/sc-regs.h>
-#include <mach/sg-regs.h>
-
-#define UART_CLK 73728000
-#include <mach/debug-uart.S>
-
-ENTRY(setup_lowlevel_debug)
- /* UART Port 0 */
- sg_set_pinsel 127, 0, 4, 8, r0, r1
- sg_set_pinsel 128, 0, 4, 8, r0, r1
-
- ldr r0, =SG_LOADPINCTRL
- mov r1, #1
- str r1, [r0]
-
- ldr r0, =SC_CLKCTRL
- ldr r1, [r0]
- orr r1, r1, #SC_CLKCTRL_CEN_PERI
- str r1, [r0]
-
- init_debug_uart r0, r1, r2
-
- mov pc, lr
-ENDPROC(setup_lowlevel_debug)
diff --git a/arch/arm/mach-uniphier/ph1-sld3/Makefile b/arch/arm/mach-uniphier/ph1-sld3/Makefile
index e3cb39fa50..48a3756c1d 100644
--- a/arch/arm/mach-uniphier/ph1-sld3/Makefile
+++ b/arch/arm/mach-uniphier/ph1-sld3/Makefile
@@ -3,7 +3,6 @@
#
ifdef CONFIG_SPL_BUILD
-obj-$(CONFIG_DEBUG_LL) += lowlevel_debug.o
obj-y += bcu_init.o memconf.o sg_init.o pll_init.o early_clkrst_init.o \
early_pinctrl.o pll_spectrum.o umc_init.o
obj-$(CONFIG_MICRO_SUPPORT_CARD) += sbc_init.o
diff --git a/arch/arm/mach-uniphier/ph1-sld3/lowlevel_debug.S b/arch/arm/mach-uniphier/ph1-sld3/lowlevel_debug.S
deleted file mode 100644
index f4eccb4612..0000000000
--- a/arch/arm/mach-uniphier/ph1-sld3/lowlevel_debug.S
+++ /dev/null
@@ -1,33 +0,0 @@
-/*
- * 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>
-
-#define UART_CLK 36864000
-#include <mach/debug-uart.S>
-
-ENTRY(setup_lowlevel_debug)
- sg_set_pinsel 63, 0, 4, 4, r0, r1
- sg_set_pinsel 64, 1, 4, 4, r0, r1
-
- 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
-
- mov pc, lr
-ENDPROC(setup_lowlevel_debug)
diff --git a/arch/arm/mach-uniphier/ph1-sld8/lowlevel_debug.S b/arch/arm/mach-uniphier/ph1-sld8/lowlevel_debug.S
deleted file mode 100644
index 571ce60698..0000000000
--- a/arch/arm/mach-uniphier/ph1-sld8/lowlevel_debug.S
+++ /dev/null
@@ -1,29 +0,0 @@
-/*
- * On-chip UART initializaion for low-level debugging
- *
- * Copyright (C) 2014 Panasonic Corporation
- * Author: Masahiro Yamada <yamada.m@jp.panasonic.com>
- *
- * SPDX-License-Identifier: GPL-2.0+
- */
-
-#include <linux/linkage.h>
-#include <mach/sg-regs.h>
-
-#define UART_CLK 80000000
-#include <mach/debug-uart.S>
-
-ENTRY(setup_lowlevel_debug)
- ldr r0, =SG_IECTRL
- ldr r1, [r0]
- orr r1, r1, #1
- str r1, [r0]
-
- /* UART Port 0 */
- sg_set_pinsel 70, 3, 8, 4, r0, r1
- sg_set_pinsel 71, 3, 8, 4, r0, r1
-
- init_debug_uart r0, r1, r2
-
- mov pc, lr
-ENDPROC(setup_lowlevel_debug)
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