new files for u8500 support.

1 files changed, 224 insertions, 0 deletions

diff --git a/common/env_emmc.c b/common/env_emmc.c
new file mode 100755
index 000000000..c46e18aa6
--- /dev/null
+++ b/common/env_emmc.c
@@ -0,0 +1,224 @@
+/*
+ * (C) Copyright 2009
+ * STEricsson, <www.stericsson.com>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * 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.
+ *
+ * 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., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+/* #define DEBUG */
+
+#include <common.h>
+
+#if defined(CONFIG_ENV_IS_IN_EMMC) /* Environment is in EMMC Flash */
+
+#include <command.h>
+#include <environment.h>
+#include <linux/stddef.h>
+#include <malloc.h>
+#include <asm/arch/emmc.h>
+
+#if defined(CONFIG_CMD_ENV) && defined(CONFIG_CMD_EMMC)
+#define CMD_SAVEENV
+#elif defined(CONFIG_ENV_OFFSET_REDUND)
+#error Cannot use CONFIG_ENV_OFFSET_REDUND without CONFIG_CMD_ENV & CONFIG_CMD_EMMC
+#endif
+
+#if defined(CONFIG_ENV_SIZE_REDUND) && (CONFIG_ENV_SIZE_REDUND != CONFIG_ENV_SIZE)
+#error CONFIG_ENV_SIZE_REDUND should be the same as CONFIG_ENV_SIZE
+#endif
+
+#ifdef CONFIG_INFERNO
+#error CONFIG_INFERNO not supported yet
+#endif
+
+/* references to names in env_common.c */
+extern uchar default_environment[];
+extern int default_environment_size;
+
+char * env_name_spec = "EMMC";
+
+
+#ifdef ENV_IS_EMBEDDED
+extern uchar environment[];
+env_t *env_ptr = (env_t *)(&environment[0]);
+#else /* ! ENV_IS_EMBEDDED */
+env_t *env_ptr = 0;
+#endif /* ENV_IS_EMBEDDED */
+
+
+DECLARE_GLOBAL_DATA_PTR;
+
+uchar env_get_char_spec (int index)
+{
+	return ( *((uchar *)(gd->env_addr + index)) );
+}
+
+
+/* this is called before nand_init()
+ * so we can't read Nand to validate env data.
+ * Mark it OK for now. env_relocate() in env_common.c
+ * will call our relocate function which will does
+ * the real validation.
+ *
+ * When using a eMMC boot image (like sequoia_nand), the environment
+ * can be embedded or attached to the U-Boot image in eMMC flash. This way
+ * the SPL loads not only the U-Boot image from eMMC but also the
+ * environment.
+ */
+int env_init(void)
+{
+#if defined(ENV_IS_EMBEDDED)
+	ulong total;
+	int crc1_ok = 0, crc2_ok = 0;
+	env_t *tmp_env1, *tmp_env2;
+
+	total = CONFIG_ENV_SIZE;
+
+	tmp_env1 = env_ptr;
+	tmp_env2 = (env_t *)((ulong)env_ptr + CONFIG_ENV_SIZE);
+
+	crc1_ok = (crc32(0, tmp_env1->data, ENV_SIZE) == tmp_env1->crc);
+	crc2_ok = (crc32(0, tmp_env2->data, ENV_SIZE) == tmp_env2->crc);
+
+	if (!crc1_ok && !crc2_ok)
+		gd->env_valid = 0;
+	else if(crc1_ok && !crc2_ok)
+		gd->env_valid = 1;
+	else if(!crc1_ok && crc2_ok)
+		gd->env_valid = 2;
+	else {
+	#ifdef CONFIG_REDUNDAND_ENVIRONMENT
+		/* both ok - check serial */
+		if(tmp_env1->flags == 255 && tmp_env2->flags == 0)
+			gd->env_valid = 2;
+		else if(tmp_env2->flags == 255 && tmp_env1->flags == 0)
+			gd->env_valid = 1;
+		else if(tmp_env1->flags > tmp_env2->flags)
+			gd->env_valid = 1;
+		else if(tmp_env2->flags > tmp_env1->flags)
+			gd->env_valid = 2;
+		else /* flags are equal - almost impossible */
+	#endif
+			gd->env_valid = 1;
+	}
+
+	if (gd->env_valid == 1)
+		env_ptr = tmp_env1;
+	else if (gd->env_valid == 2)
+		env_ptr = tmp_env2;
+#else /* ENV_IS_EMBEDDED */
+	gd->env_addr  = (ulong)&default_environment[0];
+	gd->env_valid = 1;
+#endif /* ENV_IS_EMBEDDED */
+
+	return (0);
+}
+
+#ifdef CMD_SAVEENV
+int saveenv(void)
+{
+	ulong total;
+	int ret = 0;
+
+	puts ("Erasing eMMC...");
+	if (emmc_erase(CONFIG_ENV_OFFSET_START, CONFIG_ENV_OFFSET_END))
+		return 1;
+
+	puts ("Writing to EMMC... ");
+	total = CONFIG_ENV_SIZE;
+	ret = emmc_write(CONFIG_ENV_OFFSET_START, (u32 *) env_ptr,
+		       	CONFIG_ENV_SIZE);
+	//if (ret || total != CONFIG_ENV_SIZE)
+		//return 1;
+
+	puts ("done\n");
+	return ret;
+}
+#endif /* CMD_SAVEENV */
+#ifdef CONFIG_ENV_OFFSET_REDUND
+void env_relocate_spec (void)
+{
+#if !defined(ENV_IS_EMBEDDED)
+	ulong total;
+	int crc1_ok = 0, crc2_ok = 0;
+	env_t *tmp_env1, *tmp_env2;
+
+	total = CONFIG_ENV_SIZE;
+
+	tmp_env1 = (env_t *) malloc(CONFIG_ENV_SIZE);
+	tmp_env2 = (env_t *) malloc(CONFIG_ENV_SIZE);
+
+	emmc_read(CONFIG_ENV_OFFSET_START,(u32 *) tmp_env1, total);
+	emmc_read(CONFIG_ENV_OFFSET_START,(u32 *) tmp_env2, total);
+
+	crc1_ok = (crc32(0, tmp_env1->data, ENV_SIZE) == tmp_env1->crc);
+	crc2_ok = (crc32(0, tmp_env2->data, ENV_SIZE) == tmp_env2->crc);
+
+	if(!crc1_ok && !crc2_ok)
+		return set_default_env();
+	else if(crc1_ok && !crc2_ok)
+		gd->env_valid = 1;
+	else if(!crc1_ok && crc2_ok)
+		gd->env_valid = 2;
+	else {
+		/* both ok - check serial */
+		if(tmp_env1->flags == 255 && tmp_env2->flags == 0)
+			gd->env_valid = 2;
+		else if(tmp_env2->flags == 255 && tmp_env1->flags == 0)
+			gd->env_valid = 1;
+		else if(tmp_env1->flags > tmp_env2->flags)
+			gd->env_valid = 1;
+		else if(tmp_env2->flags > tmp_env1->flags)
+			gd->env_valid = 2;
+		else /* flags are equal - almost impossible */
+			gd->env_valid = 1;
+
+	}
+
+	free(env_ptr);
+	if(gd->env_valid == 1) {
+		env_ptr = tmp_env1;
+		free(tmp_env2);
+	} else {
+		env_ptr = tmp_env2;
+		free(tmp_env1);
+	}
+
+#endif /* ! ENV_IS_EMBEDDED */
+}
+#else /* ! CONFIG_ENV_OFFSET_REDUND */
+void env_relocate_spec (void)
+{
+#if !defined(ENV_IS_EMBEDDED)
+	ulong total;
+	int ret;
+
+	total = CONFIG_ENV_SIZE;
+	printf("env_relocate_spec start\n");
+	emmc_init(4);	
+	ret = emmc_read(CONFIG_ENV_OFFSET_START, (u_char*)env_ptr, total);
+  	if (ret || total != CONFIG_ENV_SIZE)
+		return set_default_env();
+
+	if (crc32(0, env_ptr->data, ENV_SIZE) != env_ptr->crc)
+		return set_default_env();
+#endif /* ! ENV_IS_EMBEDDED */
+}
+#endif /* CONFIG_ENV_OFFSET_REDUND */
+
+#endif /* CONFIG_ENV_IS_IN_EMMC */