fdt: sandbox: Move setup code from board_f to fdtdec

We want to be able to set up the device tree in SPL, so move this code
to a common place.

Signed-off-by: Simon Glass <sjg@chromium.org>

diff --git a/arch/sandbox/cpu/cpu.c b/arch/sandbox/cpu/cpu.c
index f0dafedc254fb5d0ca3973946539babf7a75d267..168f2efa33e5fe4f5eaab52503dbb724fd2f5528 100644 (file)
--- a/arch/sandbox/cpu/cpu.c
+++ b/arch/sandbox/cpu/cpu.c
@@ -6,6 +6,7 @@
 #include <common.h>
 #include <dm/root.h>
 #include <os.h>
+#include <asm/io.h>
 #include <asm/state.h>
 
 DECLARE_GLOBAL_DATA_PTR;
@@ -97,3 +98,43 @@ phys_addr_t map_to_sysmem(const void *ptr)
 void flush_dcache_range(unsigned long start, unsigned long stop)
 {
 }
+
+int sandbox_read_fdt_from_file(void)
+{
+       struct sandbox_state *state = state_get_current();
+       const char *fname = state->fdt_fname;
+       void *blob;
+       loff_t size;
+       int err;
+       int fd;
+
+       blob = map_sysmem(CONFIG_SYS_FDT_LOAD_ADDR, 0);
+       if (!state->fdt_fname) {
+               err = fdt_create_empty_tree(blob, 256);
+               if (!err)
+                       goto done;
+               printf("Unable to create empty FDT: %s\n", fdt_strerror(err));
+               return -EINVAL;
+       }
+
+       err = os_get_filesize(fname, &size);
+       if (err < 0) {
+               printf("Failed to file FDT file '%s'\n", fname);
+               return err;
+       }
+       fd = os_open(fname, OS_O_RDONLY);
+       if (fd < 0) {
+               printf("Failed to open FDT file '%s'\n", fname);
+               return -EACCES;
+       }
+       if (os_read(fd, blob, size) != size) {
+               os_close(fd);
+               return -EIO;
+       }
+       os_close(fd);
+
+done:
+       gd->fdt_blob = blob;
+
+       return 0;
+}

diff --git a/arch/sandbox/include/asm/u-boot-sandbox.h b/arch/sandbox/include/asm/u-boot-sandbox.h
index d5b93616839d7e0def937090f334e90b6517fe13..da87cc304067f85ac4e829ef3111901d49de1999 100644 (file)
--- a/arch/sandbox/include/asm/u-boot-sandbox.h
+++ b/arch/sandbox/include/asm/u-boot-sandbox.h
@@ -75,4 +75,12 @@ int pci_unmap_physmem(const void *addr, unsigned long len,
  */
 void sandbox_set_enable_pci_map(int enable);
 
+/**
+ * sandbox_read_fdt_from_file() - Read a device tree from a file
+ *
+ * Read a device tree file from a host file and set it up for use as the
+ * control FDT.
+ */
+int sandbox_read_fdt_from_file(void);
+
 #endif /* _U_BOOT_SANDBOX_H_ */

diff --git a/common/board_f.c b/common/board_f.c
index 775df1419e6c990b66213c148bef7d2a96c7af9d..656c24940d72e47a5408a7bdc3df16bea42d050e 100644 (file)
--- a/common/board_f.c
+++ b/common/board_f.c
@@ -282,49 +282,6 @@ __weak int arch_cpu_init(void)
        return 0;
 }
 
-#ifdef CONFIG_OF_HOSTFILE
-
-static int read_fdt_from_file(void)
-{
-       struct sandbox_state *state = state_get_current();
-       const char *fname = state->fdt_fname;
-       void *blob;
-       loff_t size;
-       int err;
-       int fd;
-
-       blob = map_sysmem(CONFIG_SYS_FDT_LOAD_ADDR, 0);
-       if (!state->fdt_fname) {
-               err = fdt_create_empty_tree(blob, 256);
-               if (!err)
-                       goto done;
-               printf("Unable to create empty FDT: %s\n", fdt_strerror(err));
-               return -EINVAL;
-       }
-
-       err = os_get_filesize(fname, &size);
-       if (err < 0) {
-               printf("Failed to file FDT file '%s'\n", fname);
-               return err;
-       }
-       fd = os_open(fname, OS_O_RDONLY);
-       if (fd < 0) {
-               printf("Failed to open FDT file '%s'\n", fname);
-               return -EACCES;
-       }
-       if (os_read(fd, blob, size) != size) {
-               os_close(fd);
-               return -EIO;
-       }
-       os_close(fd);
-
-done:
-       gd->fdt_blob = blob;
-
-       return 0;
-}
-#endif
-
 #ifdef CONFIG_SANDBOX
 static int setup_ram_buf(void)
 {
@@ -337,28 +294,6 @@ static int setup_ram_buf(void)
 }
 #endif
 
-static int setup_fdt(void)
-{
-#ifdef CONFIG_OF_CONTROL
-# ifdef CONFIG_OF_EMBED
-       /* Get a pointer to the FDT */
-       gd->fdt_blob = __dtb_dt_begin;
-# elif defined CONFIG_OF_SEPARATE
-       /* FDT is at end of image */
-       gd->fdt_blob = (ulong *)&_end;
-# elif defined(CONFIG_OF_HOSTFILE)
-       if (read_fdt_from_file()) {
-               puts("Failed to read control FDT\n");
-               return -1;
-       }
-# endif
-       /* Allow the early environment to override the fdt address */
-       gd->fdt_blob = (void *)getenv_ulong("fdtcontroladdr", 16,
-                                               (uintptr_t)gd->fdt_blob);
-#endif
-       return 0;
-}
-
 /* Get the top of usable RAM */
 __weak ulong board_get_usable_ram_top(ulong total_size)
 {
@@ -826,7 +761,9 @@ static init_fnc_t init_sequence_f[] = {
        setup_ram_buf,
 #endif
        setup_mon_len,
+#ifdef CONFIG_OF_CONTROL
        setup_fdt,
+#endif
 #ifdef CONFIG_TRACE
        trace_early_init,
 #endif

diff --git a/include/fdtdec.h b/include/fdtdec.h
index d14e06ababd543e2132c35f2414a9b037a47229c..ea8a52602a5d6657aacc4c144b1e6d2a5c44e94c 100644 (file)
--- a/include/fdtdec.h
+++ b/include/fdtdec.h
@@ -793,4 +793,10 @@ int fdt_get_named_resource(const void *fdt, int node, const char *property,
 int fdtdec_decode_memory_region(const void *blob, int node,
                                const char *mem_type, const char *suffix,
                                fdt_addr_t *basep, fdt_size_t *sizep);
+
+/**
+ * Set up the device tree ready for use
+ */
+int setup_fdt(void);
+
 #endif

diff --git a/lib/fdtdec.c b/lib/fdtdec.c
index 577c60ed0d9e94a04facb6965ae91dc28f467de1..d9dbc86164bd7e2e94f075248cf77fd594308660 100644 (file)
--- a/lib/fdtdec.c
+++ b/lib/fdtdec.c
@@ -9,6 +9,7 @@
 #include <serial.h>
 #include <libfdt.h>
 #include <fdtdec.h>
+#include <asm/sections.h>
 #include <linux/ctype.h>
 
 DECLARE_GLOBAL_DATA_PTR;
@@ -1037,4 +1038,34 @@ int fdtdec_decode_memory_region(const void *blob, int config_node,
 
        return 0;
 }
+
+int setup_fdt(void)
+{
+#ifdef CONFIG_OF_CONTROL
+# ifdef CONFIG_OF_EMBED
+       /* Get a pointer to the FDT */
+       gd->fdt_blob = __dtb_dt_begin;
+# elif defined CONFIG_OF_SEPARATE
+#  ifdef CONFIG_SPL_BUILD
+       /* FDT is at end of BSS */
+       gd->fdt_blob = (ulong *)&__bss_end;
+#  else
+       /* FDT is at end of image */
+       gd->fdt_blob = (ulong *)&_end;
+#endif
+# elif defined(CONFIG_OF_HOSTFILE)
+       if (sandbox_read_fdt_from_file()) {
+               puts("Failed to read control FDT\n");
+               return -1;
+       }
+# endif
+# ifndef CONFIG_SPL_BUILD
+       /* Allow the early environment to override the fdt address */
+       gd->fdt_blob = (void *)getenv_ulong("fdtcontroladdr", 16,
+                                               (uintptr_t)gd->fdt_blob);
+# endif
 #endif
+       return 0;
+}
+
+#endif /* !USE_HOSTCC */