tegra124: Add a stub implementation of the tegra124 SOC.

Most things still needs to be filled in, but this will allow us to build
boards which use this SOC.

Change-Id: Ic790685a78193ccb223f4d9355bd3db57812af39
Signed-off-by: Gabe Black <gabeblack@google.com>
Reviewed-on: https://chromium-review.googlesource.com/170836
Reviewed-by: Gabe Black <gabeblack@chromium.org>
Commit-Queue: Gabe Black <gabeblack@chromium.org>
Tested-by: Gabe Black <gabeblack@chromium.org>
(cherry picked from commit 462456fd00164c10c80eff72240226a04445fe60)
Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com>
Reviewed-on: http://review.coreboot.org/6431
Tested-by: build bot (Jenkins)
Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>

src/soc/Kconfig

@@ -1 +1,2 @@
 source src/soc/intel/Kconfig
+source src/soc/nvidia/Kconfig

src/soc/Makefile.inc

@@ -2,3 +2,4 @@
 ## Subdirectories
 ################################################################################
 subdirs-y += intel
+subdirs-y += nvidia

src/soc/nvidia/Kconfig

@@ -0,0 +1 @@
+source src/soc/nvidia/tegra124/Kconfig

src/soc/nvidia/Makefile.inc

@@ -0,0 +1 @@
+subdirs-$(CONFIG_SOC_NVIDIA_TEGRA124) += tegra124

src/soc/nvidia/tegra124/Kconfig

@@ -0,0 +1,42 @@
+config SOC_NVIDIA_TEGRA124
+	depends on ARCH_ARMV7
+	bool
+	default n
+
+if SOC_NVIDIA_TEGRA124
+
+config BOOTBLOCK_CPU_INIT
+	string
+	default "soc/nvidia/tegra124/bootblock.c"
+	help
+	  CPU/SoC-specific bootblock code. This is useful if the
+	  bootblock must load microcode or copy data from ROM before
+	  searching for the bootblock.
+
+# ROM image layout.
+#
+# 0x00000 Combined bootblock and BCT blob
+# 0x18000 Master CBFS header.
+# 0x18080 Free for CBFS data.
+
+config BOOTBLOCK_ROM_OFFSET
+	hex
+	default 0x0
+
+config CBFS_HEADER_ROM_OFFSET
+	hex "offset of master CBFS header in ROM"
+	default 0x18000
+
+config CBFS_ROM_OFFSET
+	hex "offset of CBFS data in ROM"
+	default 0x18080
+
+config SYS_SDRAM_BASE
+	hex
+	default 0x80000000
+
+config BOOTBLOCK_BASE
+	hex
+	default 0x80000000
+
+endif

src/soc/nvidia/tegra124/Makefile.inc

@@ -0,0 +1,9 @@
+bootblock-y += cbfs.c
+
+romstage-y += cbfs.c
+romstage-y += monotonic_timer.c
+romstage-y += timer.c
+
+ramstage-y += cbfs.c
+ramstage-y += monotonic_timer.c
+ramstage-y += timer.c

src/soc/nvidia/tegra124/bootblock.c

@@ -0,0 +1,23 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright 2013 Google Inc.
+ *
+ * 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; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+void bootblock_cpu_init(void);
+void bootblock_cpu_init(void)
+{
+}

src/soc/nvidia/tegra124/cbfs.c

@@ -0,0 +1,26 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright 2013 Google Inc.
+ *
+ * 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; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+
+#include <cbfs.h>  /* This driver serves as a CBFS media source. */
+
+int init_default_cbfs_media(struct cbfs_media *media)
+{
+	return -1;
+}

src/soc/nvidia/tegra124/monotonic_timer.c

@@ -0,0 +1,24 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright 2013 Google Inc.
+ *
+ * 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; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <timer.h>
+
+void timer_monotonic_get(struct mono_time *mt)
+{
+}

src/soc/nvidia/tegra124/timer.c

@@ -0,0 +1,53 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright 2013 Google Inc.
+ *
+ * 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; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <console/console.h>
+#include <timer.h>
+#include <delay.h>
+#include <thread.h>
+
+void init_timer(void)
+{
+}
+
+/* delay x useconds */
+void udelay(unsigned usec)
+{
+	struct mono_time current, end;
+
+	if (!thread_yield_microseconds(usec))
+		return;
+
+	timer_monotonic_get(&current);
+	end = current;
+	mono_time_add_usecs(&end, usec);
+
+	if (mono_time_after(&current, &end)) {
+		printk(BIOS_EMERG, "udelay: 0x%08x is impossibly large\n",
+				usec);
+		/* There's not much we can do if usec is too big. Use a long,
+		 * paranoid delay value and hope for the best... */
+		end = current;
+		mono_time_add_usecs(&end, USECS_PER_SEC);
+	}
+
+	while (mono_time_before(&current, &end))
+		timer_monotonic_get(&current);
+}
+