[Feature]add MT2731_MP2_MR2_SVN388 baseline version
Change-Id: Ief04314834b31e27effab435d3ca8ba33b499059
diff --git a/src/kernel/linux/v4.14/arch/powerpc/boot/ebony.c b/src/kernel/linux/v4.14/arch/powerpc/boot/ebony.c
new file mode 100644
index 0000000..5532ab3
--- /dev/null
+++ b/src/kernel/linux/v4.14/arch/powerpc/boot/ebony.c
@@ -0,0 +1,92 @@
+/*
+ * Copyright 2007 David Gibson, IBM Corporation.
+ *
+ * Based on earlier code:
+ * Copyright (C) Paul Mackerras 1997.
+ *
+ * Matt Porter <mporter@kernel.crashing.org>
+ * Copyright 2002-2005 MontaVista Software Inc.
+ *
+ * Eugene Surovegin <eugene.surovegin@zultys.com> or <ebs@ebshome.net>
+ * Copyright (c) 2003, 2004 Zultys Technologies
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+#include <stdarg.h>
+#include <stddef.h>
+#include "types.h"
+#include "elf.h"
+#include "string.h"
+#include "stdio.h"
+#include "page.h"
+#include "ops.h"
+#include "reg.h"
+#include "io.h"
+#include "dcr.h"
+#include "4xx.h"
+#include "44x.h"
+
+static u8 *ebony_mac0, *ebony_mac1;
+
+#define EBONY_FPGA_PATH "/plb/opb/ebc/fpga"
+#define EBONY_FPGA_FLASH_SEL 0x01
+#define EBONY_SMALL_FLASH_PATH "/plb/opb/ebc/small-flash"
+
+static void ebony_flashsel_fixup(void)
+{
+ void *devp;
+ u32 reg[3] = {0x0, 0x0, 0x80000};
+ u8 *fpga;
+ u8 fpga_reg0 = 0x0;
+
+ devp = finddevice(EBONY_FPGA_PATH);
+ if (!devp)
+ fatal("Couldn't locate FPGA node %s\n\r", EBONY_FPGA_PATH);
+
+ if (getprop(devp, "virtual-reg", &fpga, sizeof(fpga)) != sizeof(fpga))
+ fatal("%s has missing or invalid virtual-reg property\n\r",
+ EBONY_FPGA_PATH);
+
+ fpga_reg0 = in_8(fpga);
+
+ devp = finddevice(EBONY_SMALL_FLASH_PATH);
+ if (!devp)
+ fatal("Couldn't locate small flash node %s\n\r",
+ EBONY_SMALL_FLASH_PATH);
+
+ if (getprop(devp, "reg", reg, sizeof(reg)) != sizeof(reg))
+ fatal("%s has reg property of unexpected size\n\r",
+ EBONY_SMALL_FLASH_PATH);
+
+ /* Invert address bit 14 (IBM-endian) if FLASH_SEL fpga bit is set */
+ if (fpga_reg0 & EBONY_FPGA_FLASH_SEL)
+ reg[1] ^= 0x80000;
+
+ setprop(devp, "reg", reg, sizeof(reg));
+}
+
+static void ebony_fixups(void)
+{
+ // FIXME: sysclk should be derived by reading the FPGA registers
+ unsigned long sysclk = 33000000;
+
+ ibm440gp_fixup_clocks(sysclk, 6 * 1843200);
+ ibm4xx_sdram_fixup_memsize();
+ dt_fixup_mac_address_by_alias("ethernet0", ebony_mac0);
+ dt_fixup_mac_address_by_alias("ethernet1", ebony_mac1);
+ ibm4xx_fixup_ebc_ranges("/plb/opb/ebc");
+ ebony_flashsel_fixup();
+}
+
+void ebony_init(void *mac0, void *mac1)
+{
+ platform_ops.fixups = ebony_fixups;
+ platform_ops.exit = ibm44x_dbcr_reset;
+ ebony_mac0 = mac0;
+ ebony_mac1 = mac1;
+ fdt_init(_dtb_start);
+ serial_console_init();
+}