[RFC PATCH 4/4] boot/loader: Enable building bootloader replacement for Odroid XU4

From: Åukasz Stelmach
Date: Thu Jan 30 2020 - 07:43:20 EST

This code enables booting of Linux kernel on Odroid XU4 without u-boot

Signed-off-by: Åukasz Stelmach <l.stelmach@xxxxxxxxxxx>
---
arch/arm/Kconfig | 8 ++
arch/arm/Makefile | 8 +-
arch/arm/boot/Makefile | 17 +++
arch/arm/boot/loader/Kconfig | 23 +++
arch/arm/boot/loader/Makefile | 42 ++++++
arch/arm/boot/loader/odroid-console.c | 136 ++++++++++++++++++
arch/arm/boot/loader/odroid-crt0.S | 40 ++++++
arch/arm/boot/loader/piggy.S | 14 ++
arch/arm/boot/loader/vectors.S | 112 +++++++++++++++
arch/arm/boot/loader/vmlinux.lds | 17 +++
.../configs/odroidxu4_bootloader_defconfig | 127 ++++++++++++++++
11 files changed, 543 insertions(+), 1 deletion(-)
create mode 100644 arch/arm/boot/loader/Kconfig
create mode 100644 arch/arm/boot/loader/Makefile
create mode 100644 arch/arm/boot/loader/odroid-console.c
create mode 100644 arch/arm/boot/loader/odroid-crt0.S
create mode 100644 arch/arm/boot/loader/piggy.S
create mode 100644 arch/arm/boot/loader/vectors.S
create mode 100644 arch/arm/boot/loader/vmlinux.lds
create mode 100644 arch/arm/configs/odroidxu4_bootloader_defconfig

diff --git arch/arm/Kconfig arch/arm/Kconfig
index 96dab76da3b3..576d90071ba5 100644
--- arch/arm/Kconfig
+++ arch/arm/Kconfig
@@ -1715,6 +1715,13 @@ endmenu

menu "Boot options"

+menu "Bootloader"
+ depends on BLK_DEV_INITRD
+
+source "arch/arm/boot/loader/Kconfig"
+
+endmenu
+
config USE_OF
bool "Flattened Device Tree support"
select IRQ_DOMAIN
@@ -1982,6 +1989,7 @@ config DMI
firmware need to be enabled. This would require the DMI subsystem
to be enabled much earlier than we do on ARM, which is non-trivial.

+
endmenu

menu "CPU Power Management"
diff --git arch/arm/Makefile arch/arm/Makefile
index db857d07114f..0c2c3d0039ec 100644
--- arch/arm/Makefile
+++ arch/arm/Makefile
@@ -328,11 +328,17 @@ archprepare:
# Convert bzImage to zImage
bzImage: zImage

-BOOT_TARGETS = zImage Image xipImage bootpImage uImage
+BOOT_TARGETS = zImage Image xipImage bootImage bootpImage uImage
INSTALL_TARGETS = zinstall uinstall install

PHONY += bzImage $(BOOT_TARGETS) $(INSTALL_TARGETS)

+ifeq ($(compress-y),)
+bootImage: Image
+else
+bootImage: zImage
+endif
+
bootpImage uImage: zImage
zImage: Image

diff --git arch/arm/boot/Makefile arch/arm/boot/Makefile
index 0b3cd7a33a26..20fc5cccaa1e 100644
--- arch/arm/boot/Makefile
+++ arch/arm/boot/Makefile
@@ -66,8 +66,25 @@ $(obj)/compressed/vmlinux: $(obj)/Image FORCE
$(obj)/zImage: $(obj)/compressed/vmlinux FORCE
$(call if_changed,objcopy)

+compress-$(CONFIG_KERNEL_GZIP) = gzip
+compress-$(CONFIG_KERNEL_LZO) = lzo
+compress-$(CONFIG_KERNEL_LZMA) = lzma
+compress-$(CONFIG_KERNEL_XZ) = xzkern
+compress-$(CONFIG_KERNEL_LZ4) = lz4
+
+ifeq ($(compress-y),)
+$(obj)/loader/vmlinux: $(obj)/Image dtbs FORCE
+ $(Q)$(MAKE) $(build)=$(obj)/loader $@
+else
+$(obj)/loader/vmlinux: $(obj)/zImage FORCE
+ $(Q)$(MAKE) $(build)=$(obj)/loader $@
+endif
+
endif

+$(obj)/bootImage: $(obj)/loader/vmlinux FORCE
+ $(call if_changed,objcopy)
+
ifneq ($(LOADADDR),)
UIMAGE_LOADADDR=$(LOADADDR)
else
diff --git arch/arm/boot/loader/Kconfig arch/arm/boot/loader/Kconfig
new file mode 100644
index 000000000000..bc69bf59241a
--- /dev/null
+++ arch/arm/boot/loader/Kconfig
@@ -0,0 +1,23 @@
+choice
+ prompt "Select platform to boot"
+
+ config BOOT_LOADER_XU4
+ bool "Odroid XU4"
+ depends on ARCH_EXYNOS5
+ help
+ Build a kernel loadable by XU4 firmware
+
+ config BOOT_LOADER_XU3
+ bool "Odroid XU3"
+ depends on ARCH_EXYNOS5
+ help
+ Build a kernel loadable by XU3 firmware
+endchoice
+
+config BOOT_LOADER_PLATFORM
+ string
+ default exynos5422-odroidxu4 if BOOT_LOADER_XU4
+ default exynos5422-odroidxu3 if BOOT_LOADER_XU3
+ default ""
+
+
diff --git arch/arm/boot/loader/Makefile arch/arm/boot/loader/Makefile
new file mode 100644
index 000000000000..014ccbf6885a
--- /dev/null
+++ arch/arm/boot/loader/Makefile
@@ -0,0 +1,42 @@
+# SPDX-License-Identifier: GPL-2.0
+#
+# linux/arch/arm/boot/loader/Makefile
+#
+# create a bootable image for selected platform
+#
+
+
+DTB := $(subst $(quote),,$(obj)/../dts/$(CONFIG_BOOT_LOADER_PLATFORM).dtb)
+OBJS =
+
+loader-$(CONFIG_BOOT_LOADER_XU3) = odroid-console.o odroid-crt0.o
+loader-$(CONFIG_BOOT_LOADER_XU4) = odroid-console.o odroid-crt0.o
+
+compress-$(CONFIG_KERNEL_GZIP) = gzip
+compress-$(CONFIG_KERNEL_LZO) = lzo
+compress-$(CONFIG_KERNEL_LZMA) = lzma
+compress-$(CONFIG_KERNEL_XZ) = xzkern
+compress-$(CONFIG_KERNEL_LZ4) = lz4
+
+ifeq ($(compress-y),)
+IMAGE = $(obj)/../Image
+else
+IMAGE = $(obj)/../zImage
+endif
+AFLAGS_piggy.o = -DIMAGE=\"$(IMAGE)\" -DFDT=\"$(DTB)\"
+
+$(obj)/piggy.o: $(IMAGE) $(DTB)
+
+CFLAGS_odroid-console.o = -D__UART_BASE=$(shell $(srctree)/scripts/get_console_base.pl $(obj)/../dts/$(CONFIG_BOOT_LOADER_PLATFORM).dtb)
+
+targets := vmlinux
+
+LDFLAGS_vmlinux =
+# Next argument is a linker script
+LDFLAGS_vmlinux += -Ttext 0x43E00000 -T
+
+targets := vmlinux vectors.o piggy.o $(loader-y)
+
+$(obj)/vmlinux: $(obj)/vmlinux.lds $(obj)/vectors.o $(addprefix $(obj)/, $(loader-y)) \
+ $(obj)/piggy.o FORCE
+ $(call if_changed,ld)
diff --git arch/arm/boot/loader/odroid-console.c arch/arm/boot/loader/odroid-console.c
new file mode 100644
index 000000000000..40dec77fd0ed
--- /dev/null
+++ arch/arm/boot/loader/odroid-console.c
@@ -0,0 +1,136 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Copyright (c) 2020 Samsung Electronics, Co. Ltd. */
+
+#include <asm/io.h>
+
+/* Dummy functions to avoid linker complaints */
+void __aeabi_unwind_cpp_pr0(void)
+{
+};
+#define arm_heavy_mb()
+
+#define GPIO_BASE ((void*)0x14010000)
+#define GPA1CON (GPIO_BASE + 0x20)
+#define GPA1DAT (GPIO_BASE + 0x24)
+#define GPA1PUD (GPIO_BASE + 0x28)
+#define GPA1DRV_SR (GPIO_BASE + 0x2c)
+#define GPA1CONPDN (GPIO_BASE + 0x20)
+#define GPA1PUDPDN (GPIO_BASE + 0x24)
+
+#define GPA1CON0_UART2RX (0x2 << 0)
+#define GPA1CON1_UART2TX (0x2 << 4)
+#define GPA1CON2_UART2CTS (0x2 << 8)
+#define GPA1CON3_UART2RTS (0x2 << 12)
+
+#define GPA1_UART2MASK (0xffff)
+#define GPA1PUD_UART2MASK (0xff)
+
+#ifndef __UART_BASE
+#error __UART_BASE not defined
+#else
+#define UART_BASE ((void*)__UART_BASE)
+#endif
+
+#define S3C2410_ULCON (0x00)
+#define S3C2410_UCON (0x04)
+#define S3C2410_UFCON (0x08)
+#define S3C2410_UMCON (0x0C)
+#define S3C2410_UBRDIV (0x28)
+#define S3C2410_FRACVAL (0x2C)
+
+#define UART_ULCON (UART_BASE + S3C2410_ULCON)
+#define UART_UCON (UART_BASE + S3C2410_UCON)
+#define UART_UFCON (UART_BASE + S3C2410_UFCON)
+#define UART_UMCON (UART_BASE + S3C2410_UMCON)
+#define UART_UBRDIV (UART_BASE + S3C2410_UBRDIV)
+#define UART_UFRACVAL (UART_BASE + S3C2410_FRACVAL)
+
+#define S5PV210_ULCON_CS5 (0)
+#define S5PV210_ULCON_CS6 (1)
+#define S5PV210_ULCON_CS7 (2)
+#define S5PV210_ULCON_CS8 (3)
+#define S5PV210_ULCON_CSTOPB (1 << 2) /* two stop bits */
+#define S5PV210_ULCON_PARODD (4 << 3) /* parity check: odd */
+#define S5PV210_ULCON_PAREVN (5 << 3) /* parity check: even */
+#define S5PV210_ULCON_IRDA (1 << 6) /* Infrared Mode */
+#define S5PV210_ULCON_DEFAULT (S5PV210_ULCON_CS8) /* 8N1 */
+
+#define S3C2410_UCON_RXIRQMODE (1<<0)
+#define S3C2410_UCON_TXIRQMODE (1<<2)
+#define S3C2410_UCON_SBREAK (1<<4)
+#define S3C2443_UCON_LOOPBACK (1<<5)
+#define S3C2443_UCON_RXERR_IRQEN (1<<6)
+#define S3C2410_UCON_RXFIFO_TOI (1<<7)
+#define S3C2410_UCON_RXILEVEL (1<<8)
+#define S3C2410_UCON_TXILEVEL (1<<9)
+#define S5PV210_UCON_DEFAULT ( \
+ S3C2410_UCON_RXIRQMODE | \
+ S3C2410_UCON_TXIRQMODE | \
+ S3C2443_UCON_RXERR_IRQEN | 0)
+
+#define S3C2410_UFCON_FIFOMODE (1<<0)
+#define S3C2410_UFCON_RESETRX (1<<1)
+#define S3C2410_UFCON_RESETTX (1<<2)
+#define S3C2410_UFCON_RESETBOTH (3<<1)
+
+#define S5PV210_UFCON_DEFAULT (S3C2410_UFCON_FIFOMODE | \
+ S3C2410_UFCON_RESETBOTH)
+
+
+/* CLK_SRC_PERIC0 */
+#define PWM_SEL 6
+#define UART3_SEL 6
+#define UART2_SEL 6
+#define UART1_SEL 6
+#define UART0_SEL 6
+/* SRC_CLOCK = SCLK_MPLL */
+#define CLK_SRC_PERIC0_VAL ((PWM_SEL << 24) \
+ | (UART3_SEL << 12) \
+ | (UART2_SEL << 8) \
+ | (UART1_SEL << 4) \
+ | (UART0_SEL))
+
+
+#define UART5_RATIO 7
+#define UART4_RATIO 7
+#define UART3_RATIO 7
+#define UART2_RATIO 7
+#define UART1_RATIO 7
+#define UART0_RATIO 7
+
+#define CLK_DIV_PERIC0_VAL ((UART3_RATIO << 12) \
+ | (UART2_RATIO << 8) \
+ | (UART1_RATIO << 4) \
+ | (UART0_RATIO))
+
+
+#define CLK_SRC_PERIC0 (0x10020250)
+#define CLK_DIV_PERIC0 (0x10020558)
+
+void console_on(void) {
+ int a;
+ a = readl(GPA1CON);
+ a = (a & ~GPA1_UART2MASK) |
+ GPA1CON0_UART2RX |
+ GPA1CON1_UART2TX |
+ GPA1CON2_UART2CTS |
+ GPA1CON3_UART2RTS;
+ writel(a, GPA1CON);
+
+ a = readl(GPA1PUD) & ~GPA1PUD_UART2MASK;
+ writel(a, GPA1PUD);
+
+ /* UART2_SEL: SCLK_MPLL (3)*/
+ /* MPLL_M: 266 */
+ /* MPLL_P: 3 */
+ /* MPLL_S: 2 */
+ /* UART2_RATIO: 9 */
+
+ writel(S5PV210_UFCON_DEFAULT, UART_UFCON);
+ writel(0, UART_UMCON);
+ writel(S5PV210_ULCON_DEFAULT, UART_ULCON);
+ writel(S5PV210_UCON_DEFAULT, UART_UCON);
+
+ writel(0x1b, UART_UBRDIV);
+ writel(0x0d, UART_UFRACVAL);
+}
diff --git arch/arm/boot/loader/odroid-crt0.S arch/arm/boot/loader/odroid-crt0.S
new file mode 100644
index 000000000000..586bb8e18d78
--- /dev/null
+++ arch/arm/boot/loader/odroid-crt0.S
@@ -0,0 +1,40 @@
+/*
+ * crt0 - C-runtime startup Code for ARM
+ *
+ * Copyright (c) 2012 Albert ARIBAUD <albert.u.boot@xxxxxxxxxxx>
+ * Copyright (c) 2020 Samsung Electronics, Co. Ltd.
+ *
+ * SPDX-License-Identifier: GPL-2.0
+ */
+
+#include <linux/linkage.h>
+
+splash: .asciz "boot/loader\r\n\7"
+/*
+ * entry point of crt0 sequence
+ */
+ .arm
+ENTRY(_main)
+ ldr sp, =user_stack_end
+ bl console_on
+ mov r0, #0x12C00000
+ add r0, r0, #0x20000
+ adr r2, splash
+_putc: ldrb r1, [r2]
+ teq r1, #0
+ beq _done
+ strb r1, [r0, #0x20] /* UTXH */
+ add r2, r2, #1
+ b _putc
+_done:
+ mov r0, #0
+ mov r1, #~0
+ ldr r2, =dt_blob_start
+ b zImage
+ENDPROC(_main)
+
+
+ .align 2
+ .section ".stack", "aw", %nobits
+user_stack: .space 64
+user_stack_end:
diff --git arch/arm/boot/loader/piggy.S arch/arm/boot/loader/piggy.S
new file mode 100644
index 000000000000..ae0c9f770741
--- /dev/null
+++ arch/arm/boot/loader/piggy.S
@@ -0,0 +1,14 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+ .section .piggydata,#alloc
+ .align 12
+ .globl dt_blob_start
+dt_blob_start:
+ .incbin FDT
+ .globl dt_blob_end
+dt_blob_end:
+ .align 12
+ .globl zImage
+zImage:
+ .incbin IMAGE
+ .globl zImage_end
+zImage_end:
diff --git arch/arm/boot/loader/vectors.S arch/arm/boot/loader/vectors.S
new file mode 100644
index 000000000000..744ee4625b6e
--- /dev/null
+++ arch/arm/boot/loader/vectors.S
@@ -0,0 +1,112 @@
+/*
+ * vectors - Generic ARM exception table code
+ *
+ * Copyright (c) 1998 Dan Malek <dmalek@xxxxxxx>
+ * Copyright (c) 1999 Magnus Damm <kieraypc01.p.y.kie.era.ericsson.se>
+ * Copyright (c) 2000 Wolfgang Denk <wd@xxxxxxx>
+ * Copyright (c) 2001 Alex ZÃpke <azu@xxxxxxxx>
+ * Copyright (c) 2001 Marius GrÃger <mag@xxxxxxxx>
+ * Copyright (c) 2002 Alex ZÃpke <azu@xxxxxxxx>
+ * Copyright (c) 2002 Gary Jennejohn <garyj@xxxxxxx>
+ * Copyright (c) 2002 Kyle Harris <kharris@xxxxxxxxxxxxxx>
+ * Copyright (c) 2020 Samsung Electronics, Co. Ltd.
+ *
+ * SPDX-License-Identifier: GPL-2.0
+ */
+
+/* From head.S */
+ AR_CLASS( .arch armv7-a )
+ M_CLASS( .arch armv7-m )
+
+/*
+ *************************************************************************
+ *
+ * Symbol _start is referenced elsewhere, so make it global
+ *
+ *************************************************************************
+ */
+
+.globl _start
+
+/*
+ *************************************************************************
+ *
+ * Vectors have their own section so linker script can map them easily
+ *
+ *************************************************************************
+ */
+
+ .section ".vectors", "ax"
+ .arm
+
+/*
+ *************************************************************************
+ *
+ * Exception vectors as described in ARM reference manuals
+ *
+ * Uses indirect branch to allow reaching handlers anywhere in memory.
+ *
+ *************************************************************************
+ */
+
+_start:
+ b _main
+ ldr pc, _undefined_instruction
+ ldr pc, _software_interrupt
+ ldr pc, _prefetch_abort
+ ldr pc, _data_abort
+ ldr pc, _not_used
+ ldr pc, _irq
+ ldr pc, _fiq
+
+/*
+ *************************************************************************
+ *
+ * Indirect vectors table
+ *
+ * Symbols referenced here must be defined somewhere else
+ *
+ *************************************************************************
+ */
+
+ .globl _undefined_instruction
+ .globl _software_interrupt
+ .globl _prefetch_abort
+ .globl _data_abort
+ .globl _not_used
+ .globl _irq
+ .globl _fiq
+
+_undefined_instruction: .word undefined_instruction
+_software_interrupt: .word software_interrupt
+_prefetch_abort: .word prefetch_abort
+_data_abort: .word data_abort
+_not_used: .word not_used
+_irq: .word irq
+_fiq: .word fiq
+
+ .balignl 16,0xdeadbeef
+
+/*
+ *************************************************************************
+ *
+ * Interrupt handling
+ *
+ *************************************************************************
+ */
+
+/* SPL interrupt handling: just hang */
+
+ .align 5
+undefined_instruction:
+software_interrupt:
+prefetch_abort:
+data_abort:
+not_used:
+irq:
+fiq:
+
+1:
+ bl 1b /* hang and never return */
+
+
diff --git arch/arm/boot/loader/vmlinux.lds arch/arm/boot/loader/vmlinux.lds
new file mode 100644
index 000000000000..bbd45def56a2
--- /dev/null
+++ arch/arm/boot/loader/vmlinux.lds
@@ -0,0 +1,17 @@
+OUTPUT_FORMAT("elf32-littlearm", "elf32-littlearm", "elf32-littlearm")
+OUTPUT_ARCH(arm)
+ENTRY(_start)
+SECTIONS
+{
+ . = 0x00000000;
+ . = ALIGN(4);
+ .text :
+ {
+ *(.vectors)
+ *(.text*)
+ }
+ . = ALIGN(4096);
+ .piggydata : { *(.piggydata) }
+ . = ALIGN(8);
+ .stack : { *(.stack) }
+}
diff --git arch/arm/configs/odroidxu4_bootloader_defconfig arch/arm/configs/odroidxu4_bootloader_defconfig
new file mode 100644
index 000000000000..88961d952613
--- /dev/null
+++ arch/arm/configs/odroidxu4_bootloader_defconfig
@@ -0,0 +1,127 @@
+CONFIG_BOOT_LOADER_XU4=y
+CONFIG_LOCALVERSION="-boot-loader"
+CONFIG_KERNEL_XZ=y
+CONFIG_DEFAULT_HOSTNAME="boot-loader"
+# CONFIG_SWAP is not set
+# CONFIG_CROSS_MEMORY_ATTACH is not set
+CONFIG_NO_HZ=y
+CONFIG_HIGH_RES_TIMERS=y
+CONFIG_BLK_DEV_INITRD=y
+CONFIG_INITRAMFS_SOURCE="tools/hsinit/initramfs.cpio"
+# CONFIG_RD_GZIP is not set
+# CONFIG_RD_BZIP2 is not set
+# CONFIG_RD_LZMA is not set
+# CONFIG_RD_LZO is not set
+# CONFIG_RD_LZ4 is not set
+CONFIG_CC_OPTIMIZE_FOR_SIZE=y
+# CONFIG_MULTIUSER is not set
+# CONFIG_SYSFS_SYSCALL is not set
+# CONFIG_FHANDLE is not set
+# CONFIG_BUG is not set
+# CONFIG_BASE_FULL is not set
+# CONFIG_SHMEM is not set
+# CONFIG_AIO is not set
+# CONFIG_IO_URING is not set
+# CONFIG_ADVISE_SYSCALLS is not set
+# CONFIG_MEMBARRIER is not set
+# CONFIG_KALLSYMS is not set
+# CONFIG_RSEQ is not set
+CONFIG_EMBEDDED=y
+# CONFIG_VM_EVENT_COUNTERS is not set
+CONFIG_SLOB=y
+CONFIG_ARCH_EXYNOS=y
+# CONFIG_ARCH_EXYNOS3 is not set
+# CONFIG_ARCH_EXYNOS4 is not set
+# CONFIG_SOC_EXYNOS5250 is not set
+# CONFIG_SOC_EXYNOS5260 is not set
+# CONFIG_SOC_EXYNOS5410 is not set
+# CONFIG_SOC_EXYNOS5800 is not set
+CONFIG_HAVE_ARM_ARCH_TIMER=y
+CONFIG_THUMB2_KERNEL=y
+CONFIG_HIGHMEM=y
+CONFIG_SECCOMP=y
+# CONFIG_ATAGS is not set
+CONFIG_ZBOOT_ROM_TEXT=0x0
+CONFIG_ZBOOT_ROM_BSS=0x0
+CONFIG_ARM_APPENDED_DTB=y
+CONFIG_CMDLINE="earlycon debug console=ttySAC2,115200n8 clk_ignore_unused hs=/dev/mmcblk1p6:uroot.cpio.gz"
+CONFIG_KEXEC=y
+CONFIG_VFP=y
+# CONFIG_SUSPEND is not set
+CONFIG_PM=y
+# CONFIG_BLK_DEV_BSG is not set
+CONFIG_PARTITION_ADVANCED=y
+# CONFIG_MQ_IOSCHED_DEADLINE is not set
+# CONFIG_MQ_IOSCHED_KYBER is not set
+# CONFIG_COREDUMP is not set
+# CONFIG_COMPACTION is not set
+CONFIG_DEVTMPFS=y
+CONFIG_DEVTMPFS_MOUNT=y
+CONFIG_SCSI=y
+CONFIG_BLK_DEV_SD=y
+CONFIG_CHR_DEV_SG=y
+# CONFIG_INPUT is not set
+# CONFIG_SERIO is not set
+# CONFIG_VT is not set
+# CONFIG_LEGACY_PTYS is not set
+# CONFIG_DEVMEM is not set
+CONFIG_SERIAL_SAMSUNG=y
+CONFIG_SERIAL_SAMSUNG_CONSOLE=y
+# CONFIG_HW_RANDOM is not set
+CONFIG_I2C=y
+CONFIG_I2C_CHARDEV=y
+CONFIG_I2C_MUX=y
+CONFIG_I2C_ARB_GPIO_CHALLENGE=y
+CONFIG_I2C_GPIO=y
+CONFIG_I2C_S3C2410=y
+CONFIG_SENSORS_PWM_FAN=y
+CONFIG_THERMAL_EMULATION=y
+CONFIG_MFD_SEC_CORE=y
+CONFIG_REGULATOR=y
+CONFIG_REGULATOR_FIXED_VOLTAGE=y
+CONFIG_REGULATOR_GPIO=y
+CONFIG_REGULATOR_S2MPS11=y
+# CONFIG_USB_SUPPORT is not set
+CONFIG_MMC=y
+# CONFIG_PWRSEQ_SIMPLE is not set
+CONFIG_MMC_BLOCK_MINORS=16
+CONFIG_MMC_SDHCI=y
+CONFIG_MMC_SDHCI_S3C=y
+CONFIG_MMC_SDHCI_S3C_DMA=y
+CONFIG_MMC_DW=y
+CONFIG_MMC_DW_EXYNOS=y
+CONFIG_NEW_LEDS=y
+CONFIG_LEDS_CLASS=y
+CONFIG_LEDS_CLASS_FLASH=y
+CONFIG_LEDS_GPIO=y
+CONFIG_LEDS_PWM=y
+CONFIG_LEDS_TRIGGERS=y
+CONFIG_LEDS_TRIGGER_HEARTBEAT=y
+# CONFIG_VIRTIO_MENU is not set
+CONFIG_COMMON_CLK_S2MPS11=y
+# CONFIG_EXYNOS_AUDSS_CLK_CON is not set
+# CONFIG_IOMMU_SUPPORT is not set
+CONFIG_PWM=y
+CONFIG_PWM_SAMSUNG=y
+# CONFIG_PHY_EXYNOS_DP_VIDEO is not set
+# CONFIG_PHY_EXYNOS_MIPI_VIDEO is not set
+CONFIG_NVMEM=y
+# CONFIG_FILE_LOCKING is not set
+# CONFIG_DNOTIFY is not set
+# CONFIG_INOTIFY_USER is not set
+CONFIG_VFAT_FS=y
+# CONFIG_PROC_SYSCTL is not set
+# CONFIG_PROC_PAGE_MONITOR is not set
+# CONFIG_MISC_FILESYSTEMS is not set
+CONFIG_NLS_CODEPAGE_437=y
+CONFIG_NLS_ISO8859_1=y
+CONFIG_PRINTK_TIME=y
+# CONFIG_SECTION_MISMATCH_WARN_ONLY is not set
+CONFIG_MAGIC_SYSRQ=y
+# CONFIG_DEBUG_MISC is not set
+# CONFIG_SCHED_DEBUG is not set
+# CONFIG_FTRACE is not set
+CONFIG_DEBUG_LL=y
+CONFIG_DEBUG_S3C_UART2=y
+CONFIG_DEBUG_UNCOMPRESS=y
+# CONFIG_RUNTIME_TESTING_MENU is not set
--
2.20.1