When U-Boot runs in EL2 there is no access to csu_base registers that's why this has to be done via firmware interface to find out multi boot register value. Till now this function is called only from SPL in EL3.
Signed-off-by: Michal Simek michal.simek@xilinx.com ---
Changes in v2: None
board/xilinx/zynqmp/zynqmp.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/board/xilinx/zynqmp/zynqmp.c b/board/xilinx/zynqmp/zynqmp.c index eb67116d5b44..1b0356c84c5c 100644 --- a/board/xilinx/zynqmp/zynqmp.c +++ b/board/xilinx/zynqmp/zynqmp.c @@ -346,9 +346,12 @@ int board_early_init_f(void)
static int multi_boot(void) { - u32 multiboot; + u32 multiboot = 0; + int ret;
- multiboot = readl(&csu_base->multi_boot); + ret = zynqmp_mmio_read((ulong)&csu_base->multi_boot, &multiboot); + if (ret) + return -EINVAL;
return multiboot; }