lab126: Add idme driver

arch/arm/configs/austin_defconfig

@@ -3312,5 +3312,7 @@ CONFIG_ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE=y
 # CONFIG_CORDIC is not set
 # CONFIG_DDR is not set
 # CONFIG_VIRTUALIZATION is not set
+CONFIG_AMAZON=y
+CONFIG_IDME=y
 CONFIG_MTK_WD_KICKER=y
 CONFIG_MTK_HALL_SENSOR=y

arch/arm/configs/ford_defconfig

@@ -3303,4 +3303,6 @@ CONFIG_ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE=y
 # CONFIG_CORDIC is not set
 # CONFIG_DDR is not set
 # CONFIG_VIRTUALIZATION is not set
+CONFIG_AMAZON=y
+CONFIG_IDME=y
 CONFIG_MTK_WD_KICKER=y

arch/arm/include/uapi/asm/setup.h

@@ -200,6 +200,14 @@ typedef struct {
 	mem_desc_t rank_info[4];
 } dram_info_t;
 
+#ifdef CONFIG_IDME
+#define ATAG_IDME      0x54410010
+#define ATAG_IDME_SIZE 8736
+struct tag_idme {
+	u8 idme[ATAG_IDME_SIZE+1];
+};
+#endif
+
 struct tag {
 	struct tag_header hdr;
 	union {
@@ -213,6 +221,9 @@ struct tag {
 		struct tag_revision	revision;
 		struct tag_videolfb	videolfb;
 		struct tag_cmdline	cmdline;
+#ifdef CONFIG_IDME
+		 struct tag_idme        idme;
+#endif
 
 		/*
 		 * Acorn specific

arch/arm/kernel/atags_parse.c

@@ -36,6 +36,12 @@ char default_command_line[COMMAND_LINE_SIZE] __initdata = CONFIG_CMDLINE;
 #define MEM_SIZE	(16*1024*1024)
 #endif
 
+#ifdef CONFIG_IDME
+#define IDME_ATAG_SIZE  8736 
+unsigned char system_idme[IDME_ATAG_SIZE+1];
+EXPORT_SYMBOL(system_idme);
+#endif
+
 static struct {
 	struct tag_header hdr1;
 	struct tag_core   core;
@@ -139,6 +145,15 @@ static int __init parse_tag_cmdline(const struct tag *tag)
 
 __tagtable(ATAG_CMDLINE, parse_tag_cmdline);
 
+#ifdef CONFIG_IDME
+static int __init parse_tag_idme(const struct tag *tag)
+{
+	memset(system_idme, 0, IDME_ATAG_SIZE+1);
+	memcpy(system_idme, tag->u.idme.idme, IDME_ATAG_SIZE); /* idme item */
+}
+__tagtable(ATAG_IDME, parse_tag_idme);
+#endif
+
 /*
  * Scan the tag table for this tag, and call its parse function.
  * The tag table is built by the linker from all the __tagtable