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fdt: Add ft_system_setup() function for system device tree additions

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Add an additional function for adding information to the device tree before
booting. This permits additions which are not board-specific.

Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Anatolij Gustschin <agust@denx.de>
Reviewed-by: Tom Rini <trini@ti.com>
This commit is contained in:
Simon Glass
2014-10-23 18:58:54 -06:00
parent 6f4dbc21e4
commit c654b5172a
5 changed files with 48 additions and 1 deletions
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12
include/fdt_support.h
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@@ -88,6 +88,18 @@ void ft_board_setup_ex(void *blob, bd_t *bd);
void ft_cpu_setup(void *blob, bd_t *bd);
void ft_pci_setup(void *blob, bd_t *bd);
/**
* Add system-specific data to the FDT before booting the OS.
*
* Use CONFIG_SYS_FDT_PAD to ensure there is sufficient space.
* This function is called if CONFIG_OF_SYSTEM_SETUP is defined
*
* @param blob FDT blob to update
* @param bd_t Pointer to board data
* @return 0 if ok, or -FDT_ERR_... on error
*/
int ft_system_setup(void *blob, bd_t *bd);
void set_working_fdt_addr(void *addr);
int fdt_shrink_to_minimum(void *blob);
int fdt_increase_size(void *fdt, int add_len);