diff options
Diffstat (limited to 'platform/generic/platform.c')
| -rw-r--r-- | platform/generic/platform.c | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/platform/generic/platform.c b/platform/generic/platform.c index a4a07e3..57058ff 100644 --- a/platform/generic/platform.c +++ b/platform/generic/platform.c @@ -62,10 +62,14 @@ static u32 generic_hart_index2id[SBI_HARTMASK_MAX_BITS] = { 0 }; * The arguments passed to fw_platform_init() function are boot time state * of A0 to A4 register. The "arg0" will be boot HART id and "arg1" will * be address of FDT passed by previous booting stage. + * + * The return value of fw_platform_init() function is the FDT location. If + * FDT is unchanged (or FDT is modified in-place) then fw_platform_init() + * can always return the original FDT location (i.e. 'arg1') unmodified. */ -void fw_platform_init(unsigned long arg0, unsigned long arg1, - unsigned long arg2, unsigned long arg3, - unsigned long arg4) +unsigned long fw_platform_init(unsigned long arg0, unsigned long arg1, + unsigned long arg2, unsigned long arg3, + unsigned long arg4) { const char *model, *mmu_type; void *fdt = (void *)arg1; @@ -106,7 +110,8 @@ void fw_platform_init(unsigned long arg0, unsigned long arg1, platform.hart_count = hart_count; - return; + /* Return original FDT pointer */ + return arg1; fail: while (1) |