arm-coreboot: Start new port.

grub-core/kern/arm/coreboot/cbtable.c

@@ -0,0 +1,40 @@
+/*
+ *  GRUB  --  GRand Unified Bootloader
+ *  Copyright (C) 2007,2008,2013  Free Software Foundation, Inc.
+ *
+ *  GRUB 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 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  GRUB 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 GRUB.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <grub/coreboot/lbio.h>
+#include <grub/types.h>
+#include <grub/err.h>
+#include <grub/misc.h>
+#include <grub/dl.h>
+#include <grub/arm/startup.h>
+
+GRUB_MOD_LICENSE ("GPLv3+");
+
+#pragma GCC diagnostic ignored "-Wcast-align"
+
+grub_linuxbios_table_header_t
+grub_linuxbios_get_tables (void)
+{
+  grub_linuxbios_table_header_t table_header
+    = (grub_linuxbios_table_header_t) grub_arm_saved_registers.r[0];
+
+  if (!grub_linuxbios_check_signature (table_header))
+    return 0;
+
+  return table_header;
+}

grub-core/kern/arm/coreboot/coreboot.S

@@ -0,0 +1,44 @@
+/*
+ *  GRUB  --  GRand Unified Bootloader
+ *  Copyright (C) 2016  Free Software Foundation, Inc.
+ *
+ *  GRUB 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 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  GRUB 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 GRUB.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <grub/symbol.h>
+
+	.file	"coreboot.S"
+	.text
+	.syntax	unified
+#if !defined (__thumb2__)
+	.arch	armv7a
+	.arm
+#else
+	.arch	armv7
+	.thumb
+#endif
+
+FUNCTION(grub_arm_pfr1)
+	mrc p15, 0, r0, c0, c1, 1
+	bx	lr
+
+FUNCTION(grub_armv7_get_timer_value)
+	isb
+	mrrc p15, 1, r0, r1, c14
+	bx	lr
+
+FUNCTION(grub_armv7_get_timer_frequency)
+	mrc p15, 0, r0, c14, c0, 0
+	bx	lr
+

grub-core/kern/arm/coreboot/init.c

@@ -0,0 +1,127 @@
+/*
+ *  GRUB  --  GRand Unified Bootloader
+ *  Copyright (C) 2002,2003,2004,2005,2006,2007,2008,2009,2013  Free Software Foundation, Inc.
+ *
+ *  GRUB 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 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  GRUB 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 GRUB.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <grub/kernel.h>
+#include <grub/mm.h>
+#include <grub/memory.h>
+#include <grub/machine/console.h>
+#include <grub/machine/kernel.h>
+#include <grub/offsets.h>
+#include <grub/types.h>
+#include <grub/err.h>
+#include <grub/dl.h>
+#include <grub/misc.h>
+#include <grub/loader.h>
+#include <grub/env.h>
+#include <grub/cache.h>
+#include <grub/time.h>
+#include <grub/symbol.h>
+#include <grub/video.h>
+#include <grub/coreboot/lbio.h>
+
+extern grub_uint8_t _start[];
+extern grub_uint8_t _end[];
+extern grub_uint8_t _edata[];
+grub_addr_t start_of_ram = ~(grub_addr_t)0;
+
+void  __attribute__ ((noreturn))
+grub_exit (void)
+{
+  /* We can't use grub_fatal() in this function.  This would create an infinite
+     loop, since grub_fatal() calls grub_abort() which in turn calls grub_exit().  */
+  while (1)
+    grub_cpu_idle ();
+}
+
+static grub_uint64_t modend;
+static int have_memory = 0;
+
+/* Helper for grub_machine_init.  */
+static int
+heap_init (grub_uint64_t addr, grub_uint64_t size, grub_memory_type_t type,
+	   void *data __attribute__ ((unused)))
+{
+  grub_uint64_t begin = addr, end = addr + size;
+
+#if GRUB_CPU_SIZEOF_VOID_P == 4
+  /* Restrict ourselves to 32-bit memory space.  */
+  if (begin > GRUB_ULONG_MAX)
+    return 0;
+  if (end > GRUB_ULONG_MAX)
+    end = GRUB_ULONG_MAX;
+#endif
+
+  if (start_of_ram > begin)
+    start_of_ram = begin;
+
+  if (type != GRUB_MEMORY_AVAILABLE)
+    return 0;
+
+  if (modend && begin < modend)
+    {
+      if (begin < (grub_addr_t)_start)
+	{
+	  grub_mm_init_region ((void *) (grub_addr_t) begin, (grub_size_t) ((grub_addr_t)_start - begin));
+	  have_memory = 1;
+	}
+      begin = modend;
+    }
+
+  /* Avoid DMA problems.  */
+  if (end >= 0xfe000000)
+    end = 0xfe000000;
+
+  if (end <= begin)
+    return 0;
+
+  grub_mm_init_region ((void *) (grub_addr_t) begin, (grub_size_t) (end - begin));
+
+  have_memory = 1;
+
+  return 0;
+}
+
+void
+grub_machine_init (void)
+{
+  modend = grub_modules_get_end ();
+
+  grub_video_coreboot_fb_early_init ();
+
+  grub_machine_mmap_iterate (heap_init, NULL);
+  if (!have_memory)
+    grub_fatal ("No memory found");
+
+  grub_video_coreboot_fb_late_init ();
+
+  grub_font_init ();
+  grub_gfxterm_init ();
+
+  grub_machine_timer_init ();
+}
+
+void
+grub_machine_get_bootlocation (char **device __attribute__ ((unused)),
+			       char **path __attribute__ ((unused)))
+{
+}
+
+void
+grub_machine_fini (int flags __attribute__ ((unused)))
+{
+}

grub-core/kern/arm/coreboot/timer.c

@@ -0,0 +1,65 @@
+/*
+ *  GRUB  --  GRand Unified Bootloader
+ *  Copyright (C) 2016  Free Software Foundation, Inc.
+ *
+ *  GRUB 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 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  GRUB 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 GRUB.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <grub/mm.h>
+#include <grub/machine/kernel.h>
+#include <grub/types.h>
+#include <grub/err.h>
+#include <grub/time.h>
+#include <grub/misc.h>
+
+grub_uint64_t
+grub_armv7_get_timer_value(void);
+
+grub_uint32_t
+grub_armv7_get_timer_frequency(void);
+
+grub_uint32_t
+grub_arm_pfr1(void);
+
+static int have_timer = 0;
+static grub_uint32_t timer_frequency_in_khz;
+
+static grub_uint64_t
+generic_get_time_ms (void)
+{
+  return grub_divmod64 (grub_armv7_get_timer_value(), timer_frequency_in_khz, 0);
+}
+
+static int
+try_generic_timer (void)
+{
+  if (((grub_arm_pfr1 () >> 16) & 0xf) != 1)
+    return 0;
+  grub_printf ("freq = %x\n", grub_armv7_get_timer_frequency());
+  timer_frequency_in_khz = 0x016e3600 / 1000; //grub_armv7_get_timer_frequency() / 1000;
+  if (timer_frequency_in_khz == 0)
+    return 0;
+  grub_install_get_time_ms (generic_get_time_ms);
+  have_timer = 1;
+  return 1;
+}
+
+void
+grub_machine_timer_init (void)
+{
+  if (!have_timer)
+    try_generic_timer ();
+  if (!have_timer)
+    grub_fatal ("No timer found");
+}