diff --git a/arch/arm/mach-shmobile/include/mach/head-kzm9g.txt b/arch/arm/mach-shmobile/include/mach/head-kzm9g.txt
new file mode 100644
index 0000000..9531f46
--- /dev/null
+++ b/arch/arm/mach-shmobile/include/mach/head-kzm9g.txt
@@ -0,0 +1,410 @@
+LIST "KZM9G low-level initialization routine."
+LIST "Adapted from u-boot KZM9G support code."
+
+LIST "Copyright (C) 2013 Ulrich Hecht"
+
+LIST "This program is free software; you can redistribute it and/or modify"
+LIST "it under the terms of the GNU General Public License version 2 as"
+LIST "published by the Free Software Foundation."
+
+LIST "This program is distributed in the hope that it will be useful,"
+LIST "but WITHOUT ANY WARRANTY; without even the implied warranty of"
+LIST "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the"
+LIST "GNU General Public License for more details."
+
+
+LIST "Register definitions:"
+
+LIST "Secure control register"
+#define LIFEC_SEC_SRC (0xE6110008)
+
+LIST "RWDT"
+#define RWDT_BASE   (0xE6020000)
+#define RWTCSRA0 (RWDT_BASE + 0x04)
+
+LIST "HPB Semaphore Control Registers"
+#define HPBSCR_BASE (0xE6000000)
+#define HPBCTRL6 (HPBSCR_BASE + 0x1030)
+
+#define SBSC1_BASE  (0xFE400000)
+#define SDCR0A		(SBSC1_BASE + 0x0008)
+#define SDCR1A		(SBSC1_BASE + 0x000C)
+#define SDPCRA		(SBSC1_BASE + 0x0010)
+#define SDCR0SA		(SBSC1_BASE + 0x0018)
+#define SDCR1SA		(SBSC1_BASE + 0x001C)
+#define RTCSRA		(SBSC1_BASE + 0x0020)
+#define RTCORA		(SBSC1_BASE + 0x0028)
+#define RTCORHA		(SBSC1_BASE + 0x002C)
+#define SDWCRC0A	(SBSC1_BASE + 0x0040)
+#define SDWCRC1A	(SBSC1_BASE + 0x0044)
+#define SDWCR00A	(SBSC1_BASE + 0x0048)
+#define SDWCR01A	(SBSC1_BASE + 0x004C)
+#define SDWCR10A	(SBSC1_BASE + 0x0050)
+#define SDWCR11A	(SBSC1_BASE + 0x0054)
+#define SDWCR2A		(SBSC1_BASE + 0x0060)
+#define SDWCRC2A	(SBSC1_BASE + 0x0064)
+#define ZQCCRA		(SBSC1_BASE + 0x0068)
+#define SDMRACR0A	(SBSC1_BASE + 0x0084)
+#define SDMRTMPCRA	(SBSC1_BASE + 0x008C)
+#define SDMRTMPMSKA	(SBSC1_BASE + 0x0094)
+#define SDGENCNTA	(SBSC1_BASE + 0x009C)
+#define SDDRVCR0A	(SBSC1_BASE + 0x00B4)
+#define DLLCNT0A	(SBSC1_BASE + 0x0354)
+
+#define SDMRA1  (0xFE500000)
+#define SDMRA2  (0xFE5C0000)
+#define SDMRA3  (0xFE504000)
+
+#define SBSC2_BASE  (0xFB400000)
+#define SDCR0B		(SBSC2_BASE + 0x0008)
+#define SDCR1B		(SBSC2_BASE + 0x000C)
+#define SDPCRB		(SBSC2_BASE + 0x0010)
+#define SDCR0SB		(SBSC2_BASE + 0x0018)
+#define SDCR1SB		(SBSC2_BASE + 0x001C)
+#define RTCSRB		(SBSC2_BASE + 0x0020)
+#define RTCORB		(SBSC2_BASE + 0x0028)
+#define RTCORHB		(SBSC2_BASE + 0x002C)
+#define SDWCRC0B	(SBSC2_BASE + 0x0040)
+#define SDWCRC1B	(SBSC2_BASE + 0x0044)
+#define SDWCR00B	(SBSC2_BASE + 0x0048)
+#define SDWCR01B	(SBSC2_BASE + 0x004C)
+#define SDWCR10B	(SBSC2_BASE + 0x0050)
+#define SDWCR11B	(SBSC2_BASE + 0x0054)
+#define SDPDCR0B	(SBSC2_BASE + 0x0058)
+#define SDWCR2B		(SBSC2_BASE + 0x0060)
+#define SDWCRC2B	(SBSC2_BASE + 0x0064)
+#define ZQCCRB		(SBSC2_BASE + 0x0068)
+#define SDMRACR0B	(SBSC2_BASE + 0x0084)
+#define SDMRTMPCRB	(SBSC2_BASE + 0x008C)
+#define SDMRTMPMSKB	(SBSC2_BASE + 0x0094)
+#define SDGENCNTB	(SBSC2_BASE + 0x009C)
+#define DPHYCNT0B	(SBSC2_BASE + 0x00A0)
+#define DPHYCNT1B	(SBSC2_BASE + 0x00A4)
+#define DPHYCNT2B	(SBSC2_BASE + 0x00A8)
+#define SDDRVCR0B	(SBSC2_BASE + 0x00B4)
+#define DLLCNT0B	(SBSC2_BASE + 0x0354)
+
+#define SDMRB1  (0xFB500000)
+#define SDMRB2  (0xFB5C0000)
+#define SDMRB3  (0xFB504000)
+
+#define CPG_BASE   (0xE6150000)
+#define FRQCRA		(CPG_BASE + 0x0000)
+#define FRQCRB		(CPG_BASE + 0x0004)
+#define FRQCRD		(CPG_BASE + 0x00E4)
+#define VCLKCR1		(CPG_BASE + 0x0008)
+#define VCLKCR2		(CPG_BASE + 0x000C)
+#define VCLKCR3		(CPG_BASE + 0x001C)
+#define ZBCKCR		(CPG_BASE + 0x0010)
+#define FLCKCR		(CPG_BASE + 0x0014)
+#define SD0CKCR		(CPG_BASE + 0x0074)
+#define SD1CKCR		(CPG_BASE + 0x0078)
+#define SD2CKCR		(CPG_BASE + 0x007C)
+#define FSIACKCR	(CPG_BASE + 0x0018)
+#define SUBCKCR		(CPG_BASE + 0x0080)
+#define SPUACKCR	(CPG_BASE + 0x0084)
+#define SPUVCKCR	(CPG_BASE + 0x0094)
+#define MSUCKCR		(CPG_BASE + 0x0088)
+#define HSICKCR		(CPG_BASE + 0x008C)
+#define FSIBCKCR	(CPG_BASE + 0x0090)
+#define MFCK1CR		(CPG_BASE + 0x0098)
+#define MFCK2CR		(CPG_BASE + 0x009C)
+#define DSITCKCR	(CPG_BASE + 0x0060)
+#define DSI0PCKCR	(CPG_BASE + 0x0064)
+#define DSI1PCKCR	(CPG_BASE + 0x0068)
+#define DSI0PHYCR	(CPG_BASE + 0x006C)
+#define DVFSCR3		(CPG_BASE + 0x0174)
+#define DVFSCR4		(CPG_BASE + 0x0178)
+#define DVFSCR5		(CPG_BASE + 0x017C)
+#define MPMODE		(CPG_BASE + 0x00CC)
+
+#define PLLECR		(CPG_BASE + 0x00D0)
+#define PLL0CR		(CPG_BASE + 0x00D8)
+#define PLL1CR		(CPG_BASE + 0x0028)
+#define PLL2CR		(CPG_BASE + 0x002C)
+#define PLL3CR		(CPG_BASE + 0x00DC)
+#define PLL0STPCR	(CPG_BASE + 0x00F0)
+#define PLL1STPCR	(CPG_BASE + 0x00C8)
+#define PLL2STPCR	(CPG_BASE + 0x00F8)
+#define PLL3STPCR	(CPG_BASE + 0x00FC)
+#define RMSTPCR0	(CPG_BASE + 0x0110)
+#define RMSTPCR1	(CPG_BASE + 0x0114)
+#define RMSTPCR2	(CPG_BASE + 0x0118)
+#define RMSTPCR3	(CPG_BASE + 0x011C)
+#define RMSTPCR4	(CPG_BASE + 0x0120)
+#define RMSTPCR5	(CPG_BASE + 0x0124)
+#define SMSTPCR0	(CPG_BASE + 0x0130)
+#define SMSTPCR2	(CPG_BASE + 0x0138)
+#define SMSTPCR3	(CPG_BASE + 0x013C)
+#define CPGXXCR4	(CPG_BASE + 0x0150)
+#define SRCR0		(CPG_BASE + 0x80A0)
+#define SRCR2		(CPG_BASE + 0x80B0)
+#define SRCR3		(CPG_BASE + 0x80A8)
+#define VREFCR		(CPG_BASE + 0x00EC)
+#define PCLKCR		(CPG_BASE + 0x1020)
+
+#define PORT32CR (0xE6051020)
+#define PORT33CR (0xE6051021)
+#define PORT34CR (0xE6051022)
+#define PORT35CR (0xE6051023)
+
+LIST "DRAM initialization code:"
+
+EW RWTCSRA0, 0xA507
+
+ED_AND LIFEC_SEC_SRC, 0xFFFF7FFF
+
+ED_AND SMSTPCR3,0xFFFF7FFF
+ED_AND SRCR3, 0xFFFF7FFF
+ED_AND SMSTPCR2,0xFFFBFFFF
+ED_AND SRCR2, 0xFFFBFFFF
+ED PLLECR, 0x00000000
+
+WAIT_MASK PLLECR, 0x00000F00, 0x00000000
+WAIT_MASK FRQCRB, 0x80000000, 0x00000000
+
+ED PLL0CR, 0x2D000000
+ED PLL1CR, 0x17100000
+ED FRQCRB, 0x96235880
+WAIT_MASK FRQCRB, 0x80000000, 0x00000000
+
+ED FLCKCR, 0x0000000B
+ED_AND SMSTPCR0, 0xFFFFFFFD
+
+ED_AND SRCR0, 0xFFFFFFFD
+ED 0xE6001628, 0x514
+ED 0xE6001648, 0x514
+ED 0xE6001658, 0x514
+ED 0xE6001678, 0x514
+
+ED DVFSCR4, 0x00092000
+ED DVFSCR5, 0x000000DC
+ED PLLECR, 0x00000000
+WAIT_MASK PLLECR, 0x00000F00, 0x00000000
+
+ED FRQCRA, 0x0012453C
+ED FRQCRB, 0x80431350
+WAIT_MASK FRQCRB, 0x80000000, 0x00000000
+ED FRQCRD, 0x00000B0B
+WAIT_MASK FRQCRD, 0x80000000, 0x00000000
+
+ED PCLKCR, 0x00000003
+ED VCLKCR1, 0x0000012F
+ED VCLKCR2, 0x00000119
+ED VCLKCR3, 0x00000119
+ED ZBCKCR, 0x00000002
+ED FLCKCR, 0x00000005
+ED SD0CKCR, 0x00000080
+ED SD1CKCR, 0x00000080
+ED SD2CKCR, 0x00000080
+ED FSIACKCR, 0x0000003F
+ED FSIBCKCR, 0x0000003F
+ED SUBCKCR, 0x00000080
+ED SPUACKCR, 0x0000000B
+ED SPUVCKCR, 0x0000000B
+ED MSUCKCR, 0x0000013F
+ED HSICKCR, 0x00000080
+ED MFCK1CR, 0x0000003F
+ED MFCK2CR, 0x0000003F
+ED DSITCKCR, 0x00000107
+ED DSI0PCKCR, 0x00000313
+ED DSI1PCKCR, 0x0000130D
+ED DSI0PHYCR, 0x2A800E0E
+ED PLL0CR, 0x1E000000
+ED PLL0CR, 0x2D000000
+ED PLL1CR, 0x17100000
+ED PLL2CR, 0x27000080
+ED PLL3CR, 0x1D000000
+ED PLL0STPCR, 0x00080000
+ED PLL1STPCR, 0x000120C0
+ED PLL2STPCR, 0x00012000
+ED PLL3STPCR, 0x00000030
+ED PLLECR, 0x0000000B
+WAIT_MASK PLLECR, 0x00000B00, 0x00000B00
+
+ED DVFSCR3, 0x000120F0
+ED MPMODE, 0x00000020
+ED VREFCR, 0x0000028A
+ED RMSTPCR0, 0xE4628087
+ED RMSTPCR1, 0xFFFFFFFF
+ED RMSTPCR2, 0x53FFFFFF
+ED RMSTPCR3, 0xFFFFFFFF
+ED RMSTPCR4, 0x00800D3D
+ED RMSTPCR5, 0xFFFFF3FF
+ED SMSTPCR2, 0x00000000
+ED SRCR2,  0x00040000
+ED_AND PLLECR, 0xFFFFFFF7
+WAIT_MASK PLLECR, 0x00000800, 0x00000000
+
+LIST "set SBSC operational"
+ED HPBCTRL6, 0x00000001
+WAIT_MASK HPBCTRL6, 0x00000001, 0x00000001
+
+LIST "set SBSC operating frequency"
+ED FRQCRD, 0x00001414
+WAIT_MASK FRQCRD, 0x80000000, 0x00000000
+ED PLL3CR, 0x1D000000
+ED_OR PLLECR, 0x00000008
+WAIT_MASK PLLECR, 0x00000800, 0x00000800
+
+LIST "enable DLL oscillation in DDRPHY"
+ED_OR DLLCNT0A, 0x00000002
+
+LIST "wait >= 100 ns"
+ED SDGENCNTA, 0x00000005
+WAIT_MASK SDGENCNTA, 0xFFFFFFFF, 0x00000000
+
+LIST "target LPDDR2 device settings"
+ED SDCR0A, 0xACC90159
+ED SDCR1A, 0x00010059
+ED SDWCRC0A, 0x50874114
+ED SDWCRC1A, 0x33199B37
+ED SDWCRC2A, 0x008F2313
+ED SDWCR00A, 0x31020707
+ED SDWCR01A, 0x0017040A
+ED SDWCR10A, 0x31020707
+ED SDWCR11A, 0x0017040A
+
+ED SDDRVCR0A, 0x055557ff
+
+ED SDWCR2A, 0x30000000
+
+LIST "drive CKE high"
+ED_OR SDPCRA, 0x00000080
+WAIT_MASK SDPCRA, 0x00000080, 0x00000080
+
+LIST "wait >= 200 us"
+ED SDGENCNTA, 0x00002710
+WAIT_MASK SDGENCNTA, 0xFFFFFFFF, 0x00000000
+
+LIST "issue reset command to LPDDR2 device"
+ED SDMRACR0A, 0x0000003F
+ED SDMRA1, 0x00000000
+
+LIST "wait >= 10 (or 1) us (docs inconsistent)"
+ED SDGENCNTA, 0x000001F4
+WAIT_MASK SDGENCNTA, 0xFFFFFFFF, 0x00000000
+
+LIST "MRW ZS initialization calibration command"
+ED SDMRACR0A, 0x0000FF0A
+ED SDMRA3, 0x00000000
+
+LIST "wait >= 1 us"
+ED SDGENCNTA, 0x00000032
+WAIT_MASK SDGENCNTA, 0xFFFFFFFF, 0x00000000
+
+LIST "specify operating mode in LPDDR2"
+ED SDMRACR0A, 0x00002201
+ED SDMRA1, 0x00000000
+ED SDMRACR0A, 0x00000402
+ED SDMRA1, 0x00000000
+ED SDMRACR0A, 0x00000203
+ED SDMRA1, 0x00000000
+
+LIST "initialize DDR interface"
+ED SDMRA2, 0x00000000
+
+LIST "temperature sensor control"
+ED SDMRTMPCRA, 0x88800004
+ED SDMRTMPMSKA,0x00000004
+
+LIST "auto-refreshing control"
+ED RTCORA, 0xA55A0032
+ED RTCORHA, 0xA55A000C
+ED RTCSRA, 0xA55A2048
+
+ED_OR SDCR0A, 0x00000800
+ED_OR SDCR1A, 0x00000400
+
+LIST "auto ZQ calibration control"
+ED ZQCCRA, 0xFFF20000
+
+ED_OR DLLCNT0B, 0x00000002
+ED SDGENCNTB, 0x00000005
+WAIT_MASK SDGENCNTB, 0xFFFFFFFF, 0x00000000
+
+ED SDCR0B, 0xACC90159
+ED SDCR1B, 0x00010059
+ED SDWCRC0B, 0x50874114
+ED SDWCRC1B, 0x33199B37
+ED SDWCRC2B, 0x008F2313
+ED SDWCR00B, 0x31020707
+ED SDWCR01B, 0x0017040A
+ED SDWCR10B, 0x31020707
+ED SDWCR11B, 0x0017040A
+ED SDDRVCR0B, 0x055557ff
+ED SDWCR2B, 0x30000000
+ED_OR SDPCRB, 0x00000080
+WAIT_MASK SDPCRB, 0x00000080, 0x00000080
+
+ED SDGENCNTB, 0x00002710
+WAIT_MASK SDGENCNTB, 0xFFFFFFFF, 0x00000000
+ED SDMRACR0B, 0x0000003F
+
+LIST "upstream u-boot writes to SDMRA1A for both SBSC 1 and 2, which does"
+LIST "not seem to make a lot of sense..."
+ED SDMRB1, 0x00000000
+
+ED SDGENCNTB, 0x000001F4
+WAIT_MASK SDGENCNTB, 0xFFFFFFFF, 0x00000000
+
+ED SDMRACR0B, 0x0000FF0A
+ED SDMRB3, 0x00000000
+ED SDGENCNTB, 0x00000032
+WAIT_MASK SDGENCNTB, 0xFFFFFFFF, 0x00000000
+
+ED SDMRACR0B, 0x00002201
+ED SDMRB1, 0x00000000
+ED SDMRACR0B, 0x00000402
+ED SDMRB1, 0x00000000
+ED SDMRACR0B, 0x00000203
+ED SDMRB1, 0x00000000
+ED SDMRB2, 0x00000000
+ED SDMRTMPCRB, 0x88800004
+ED SDMRTMPMSKB, 0x00000004
+ED RTCORB,  0xA55A0032
+ED RTCORHB, 0xA55A000C
+ED RTCSRB,  0xA55A2048
+ED_OR SDCR0B, 0x00000800
+ED_OR SDCR1B, 0x00000400
+ED ZQCCRB, 0xFFF20000
+ED_OR SDPDCR0B, 0x00030000
+ED DPHYCNT1B, 0xA5390000
+ED DPHYCNT0B, 0x00001200
+ED DPHYCNT1B, 0x07CE0000
+ED DPHYCNT0B, 0x00001247
+WAIT_MASK DPHYCNT2B, 0xFFFFFFFF, 0x07CE0000
+
+ED_AND SDPDCR0B, 0xFFFCFFFF
+
+ED FRQCRD, 0x00000B0B
+WAIT_MASK FRQCRD, 0x80000000, 0x00000000
+
+ED CPGXXCR4, 0xfffffffc
+
+LIST "Setup SCIF4 / workaround"
+EB PORT32CR, 0x12
+EB PORT33CR, 0x22
+EB PORT34CR, 0x12
+EB PORT35CR, 0x22
+
+EW 0xE6C80000, 0
+EB 0xE6C80004, 0x19
+EW 0xE6C80008, 0x0030
+EW 0xE6C80018, 0
+EW 0xE6C80030, 0x0014
+
+LIST "Magic to avoid hangs and corruption on DRAM writes."
+
+LIST "It has been observed that the system would most often hang while"
+LIST "decompressing the kernel, and if it didn't it would always write"
+LIST "a corrupt image to DRAM."
+LIST "This problem does not occur in u-boot, and the reason is that"
+LIST "u-boot performs an additional cache invalidation after setting up"
+LIST "the DRAM controller. Such an invalidation should not be necessary at"
+LIST "this point, and attempts at removing parts of the routine to arrive"
+LIST "at the minimal snippet of code necessary to avoid the DRAM stability"
+LIST "problem yielded the following:"
+
+MRC p15, 0, r0, c1, c0, 0
+MCR p15, 0, r0, c1, c0, 0
diff --git a/arch/arm/mach-shmobile/include/mach/zboot.h b/arch/arm/mach-shmobile/include/mach/zboot.h
index c3c4669..727cc78 100644
--- a/arch/arm/mach-shmobile/include/mach/zboot.h
+++ b/arch/arm/mach-shmobile/include/mach/zboot.h
@@ -12,6 +12,9 @@
 #ifdef CONFIG_MACH_MACKEREL
 #define MEMORY_START	0x40000000
 #include "mach/head-mackerel.txt"
+#elif defined(CONFIG_MACH_KZM9G) || defined(CONFIG_MACH_KZM9G_REFERENCE)
+#define MEMORY_START	0x43000000
+#include "mach/head-kzm9g.txt"
 #else
 #error "unsupported board."
 #endif
diff --git a/arch/arm/mach-shmobile/include/mach/zboot_macros.h b/arch/arm/mach-shmobile/include/mach/zboot_macros.h
index aa6111f..14fd3d5 100644
--- a/arch/arm/mach-shmobile/include/mach/zboot_macros.h
+++ b/arch/arm/mach-shmobile/include/mach/zboot_macros.h
@@ -62,4 +62,47 @@
 2 :
 .endm
 
+/* loop until a given value has been read (with mask) */
+.macro WAIT_MASK, addr, data, cmp
+	LDR	r0, 2f
+	LDR	r1, 3f
+	LDR	r2, 4f
+1:
+	LDR	r3, [r0, #0]
+	AND	r3, r1, r3
+	CMP	r2, r3
+	BNE	1b
+	B	5f
+2:	.long	\addr
+3:	.long	\data
+4:	.long	\cmp
+5:
+.endm
+
+/* read 32-bit value from addr, "or" an immediate and write back */
+.macro ED_OR, addr, data
+	LDR r4, 1f
+	LDR r5, 2f
+	LDR r6, [r4]
+	ORR r5, r6, r5
+	STR r5, [r4]
+	B	3f
+1:	.long	\addr
+2:	.long	\data
+3:
+.endm
+
+/* read 32-bit value from addr, "and" an immediate and write back */
+.macro ED_AND, addr, data
+	LDR r4, 1f
+	LDR r5, 2f
+	LDR r6, [r4]
+	AND r5, r6, r5
+	STR r5, [r4]
+	B	3f
+1:	.long \addr
+2:	.long \data
+3:
+.endm
+
 #endif /* __ZBOOT_MACRO_H */
