riscv: bootm: Remove ATAGS

ATAGS is not supported and will be replaced
by DT in riscv-linux. So can be removed now.

Signed-off-by: Rick Chen <rick@andestech.com>
Signed-off-by: Rick Chen <rickchen36@gmail.com>

arch/riscv/include/asm/bootm.h

@@ -13,53 +13,4 @@
 
 #include <asm/setup.h>
 
-#if defined(CONFIG_SETUP_MEMORY_TAGS) || \
-		defined(CONFIG_CMDLINE_TAG) || \
-		defined(CONFIG_INITRD_TAG) || \
-		defined(CONFIG_SERIAL_TAG) || \
-		defined(CONFIG_REVISION_TAG)
-# define BOOTM_ENABLE_TAGS		1
-#else
-# define BOOTM_ENABLE_TAGS		0
-#endif
-
-#ifdef CONFIG_SETUP_MEMORY_TAGS
-# define BOOTM_ENABLE_MEMORY_TAGS	1
-#else
-# define BOOTM_ENABLE_MEMORY_TAGS	0
-#endif
-
-#ifdef CONFIG_CMDLINE_TAG
- #define BOOTM_ENABLE_CMDLINE_TAG	1
-#else
- #define BOOTM_ENABLE_CMDLINE_TAG	0
-#endif
-
-#ifdef CONFIG_INITRD_TAG
- #define BOOTM_ENABLE_INITRD_TAG	1
-#else
- #define BOOTM_ENABLE_INITRD_TAG	0
-#endif
-
-#ifdef CONFIG_SERIAL_TAG
- #define BOOTM_ENABLE_SERIAL_TAG	1
-void get_board_serial(struct tag_serialnr *serialnr);
-#else
- #define BOOTM_ENABLE_SERIAL_TAG	0
-static inline void get_board_serial(struct tag_serialnr *serialnr)
-{
-}
-#endif
-
-#ifdef CONFIG_REVISION_TAG
- #define BOOTM_ENABLE_REVISION_TAG	1
-u32 get_board_rev(void);
-#else
- #define BOOTM_ENABLE_REVISION_TAG	0
-static inline u32 get_board_rev(void)
-{
-	return 0;
-}
-#endif
-
 #endif

arch/riscv/lib/bootm.c

@@ -21,26 +21,6 @@ int arch_fixup_fdt(void *blob)
 	return 0;
 }
 
-#if defined(CONFIG_SETUP_MEMORY_TAGS) || \
-	defined(CONFIG_CMDLINE_TAG) || \
-	defined(CONFIG_INITRD_TAG) || \
-	defined(CONFIG_SERIAL_TAG) || \
-	defined(CONFIG_REVISION_TAG)
-static void setup_start_tag(bd_t *bd);
-
-# ifdef CONFIG_SETUP_MEMORY_TAGS
-static void setup_memory_tags(bd_t *bd);
-# endif
-static void setup_commandline_tag(bd_t *bd, char *commandline);
-
-# ifdef CONFIG_INITRD_TAG
-static void setup_initrd_tag(bd_t *bd, ulong initrd_start, ulong initrd_end);
-# endif
-static void setup_end_tag(bd_t *bd);
-
-static struct tag *params;
-#endif /* CONFIG_SETUP_MEMORY_TAGS || CONFIG_CMDLINE_TAG || CONFIG_INITRD_TAG */
-
 int do_bootm_linux(int flag, int argc, char *argv[], bootm_headers_t *images)
 {
 	bd_t	*bd = gd->bd;
@@ -48,10 +28,6 @@ int do_bootm_linux(int flag, int argc, char *argv[], bootm_headers_t *images)
 	int	machid = bd->bi_arch_number;
 	void	(*theKernel)(int arch, uint params);
 
-#ifdef CONFIG_CMDLINE_TAG
-	char *commandline = env_get("bootargs");
-#endif
-
 	/*
 	 * allow the PREP bootm subcommand, it is required for bootm to work
 	 */
@@ -82,167 +58,16 @@ int do_bootm_linux(int flag, int argc, char *argv[], bootm_headers_t *images)
 			hang();
 		}
 #endif
-	} else if (BOOTM_ENABLE_TAGS) {
-#if defined(CONFIG_SETUP_MEMORY_TAGS) || \
-	defined(CONFIG_CMDLINE_TAG) || \
-	defined(CONFIG_INITRD_TAG) || \
-	defined(CONFIG_SERIAL_TAG) || \
-	defined(CONFIG_REVISION_TAG)
-	setup_start_tag(bd);
-#ifdef CONFIG_SERIAL_TAG
-	setup_serial_tag(&params);
-#endif
-#ifdef CONFIG_REVISION_TAG
-	setup_revision_tag(&params);
-#endif
-#ifdef CONFIG_SETUP_MEMORY_TAGS
-	setup_memory_tags(bd);
-#endif
-#ifdef CONFIG_CMDLINE_TAG
-	setup_commandline_tag(bd, commandline);
-#endif
-#ifdef CONFIG_INITRD_TAG
-	if (images->rd_start && images->rd_end)
-		setup_initrd_tag(bd, images->rd_start, images->rd_end);
-#endif
-	setup_end_tag(bd);
-#endif
+	}
 
 	/* we assume that the kernel is in place */
 	printf("\nStarting kernel ...\n\n");
 
-#ifdef CONFIG_USB_DEVICE
-	{
-		extern void udc_disconnect(void);
-		udc_disconnect();
-	}
-#endif
-	}
 	cleanup_before_linux();
 	if (IMAGE_ENABLE_OF_LIBFDT && images->ft_len)
 		theKernel(machid, (unsigned long)images->ft_addr);
-	else
-	theKernel(machid, bd->bi_boot_params);
+
 	/* does not return */
 
 	return 1;
 }
-
-#if defined(CONFIG_SETUP_MEMORY_TAGS) || \
-	defined(CONFIG_CMDLINE_TAG) || \
-	defined(CONFIG_INITRD_TAG) || \
-	defined(CONFIG_SERIAL_TAG) || \
-	defined(CONFIG_REVISION_TAG)
-static void setup_start_tag(bd_t *bd)
-{
-	params = (struct tag *)bd->bi_boot_params;
-
-	params->hdr.tag = ATAG_CORE;
-	params->hdr.size = tag_size(tag_core);
-
-	params->u.core.flags = 0;
-	params->u.core.pagesize = 0;
-	params->u.core.rootdev = 0;
-
-	params = tag_next(params);
-}
-
-#ifdef CONFIG_SETUP_MEMORY_TAGS
-static void setup_memory_tags(bd_t *bd)
-{
-	int i;
-
-	for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
-		params->hdr.tag = ATAG_MEM;
-		params->hdr.size = tag_size(tag_mem32);
-
-		params->u.mem.start = bd->bi_dram[i].start;
-		params->u.mem.size = bd->bi_dram[i].size;
-
-		params = tag_next(params);
-	}
-}
-#endif /* CONFIG_SETUP_MEMORY_TAGS */
-
-static void setup_commandline_tag(bd_t *bd, char *commandline)
-{
-	char *p;
-
-	if (!commandline)
-		return;
-
-	/* eat leading white space */
-	for (p = commandline; *p == ' '; p++)
-		;
-
-	/* skip non-existent command lines so the kernel will still
-	 * use its default command line.
-	 */
-	if (*p == '\0')
-		return;
-
-	params->hdr.tag = ATAG_CMDLINE;
-	params->hdr.size =
-		(sizeof(struct tag_header) + strlen(p) + 1 + 4) >> 2;
-
-	strcpy(params->u.cmdline.cmdline, p)
-		;
-
-	params = tag_next(params);
-}
-
-#ifdef CONFIG_INITRD_TAG
-static void setup_initrd_tag(bd_t *bd, ulong initrd_start, ulong initrd_end)
-{
-	/* an ATAG_INITRD node tells the kernel where the compressed
-	 * ramdisk can be found. ATAG_RDIMG is a better name, actually.
-	 */
-	params->hdr.tag = ATAG_INITRD2;
-	params->hdr.size = tag_size(tag_initrd);
-
-	params->u.initrd.start = initrd_start;
-	params->u.initrd.size = initrd_end - initrd_start;
-
-	params = tag_next(params);
-}
-#endif /* CONFIG_INITRD_TAG */
-
-#ifdef CONFIG_SERIAL_TAG
-void setup_serial_tag(struct tag **tmp)
-{
-	void get_board_serial(struct tag_serialnr *serialnr);
-	struct tag *params;
-	struct tag_serialnr serialnr;
-
-	params = *tmp;
-	get_board_serial(&serialnr);
-	params->hdr.tag = ATAG_SERIAL;
-	params->hdr.size = tag_size(tag_serialnr);
-	params->u.serialnr.low = serialnr.low;
-	params->u.serialnr.high = serialnr.high;
-	params = tag_next(params);
-	*tmp = params;
-}
-#endif
-
-#ifdef CONFIG_REVISION_TAG
-void setup_revision_tag(struct tag **in_params)
-{
-	u32 get_board_rev(void);
-	u32 rev;
-
-	rev = get_board_rev();
-	params->hdr.tag = ATAG_REVISION;
-	params->hdr.size = tag_size(tag_revision);
-	params->u.revision.rev = rev;
-	params = tag_next(params);
-}
-#endif  /* CONFIG_REVISION_TAG */
-
-static void setup_end_tag(bd_t *bd)
-{
-	params->hdr.tag = ATAG_NONE;
-	params->hdr.size = 0;
-}
-
-#endif /* CONFIG_SETUP_MEMORY_TAGS || CONFIG_CMDLINE_TAG || CONFIG_INITRD_TAG */