diff options
| author | Nitin Jain <nitin.jain@xilinx.com> | 2018-02-16 12:56:17 +0530 |
|---|---|---|
| committer | Michal Simek <michal.simek@xilinx.com> | 2018-03-23 09:34:42 +0100 |
| commit | 51916864b31f35853c2c6bf94f4dc89a311ee8f1 (patch) | |
| tree | 1056e6d2cbc972ed0ec7a277c90af409856fd7cc /board | |
| parent | 429f0b9e1410a19b08ac281318a308ebce4b6fbc (diff) | |
arm64: zynqmp: Add support to load an app at EL1
This patch is adding support to switch to EL1 while loading an EL1
application with u-boot running at EL above EL1 in aarch64 mode.
Signed-off-by: Nitin Jain <nitinj@xilinx.com>
Signed-off-by: Siva Durga Prasad Paladugu <sivadur@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Diffstat (limited to 'board')
| -rw-r--r-- | board/xilinx/zynqmp/zynqmp.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/board/xilinx/zynqmp/zynqmp.c b/board/xilinx/zynqmp/zynqmp.c index ff0b3c75f53..b9825ddaa88 100644 --- a/board/xilinx/zynqmp/zynqmp.c +++ b/board/xilinx/zynqmp/zynqmp.c @@ -316,6 +316,23 @@ int zynq_board_read_rom_ethaddr(unsigned char *ethaddr) return 0; } +unsigned long do_go_exec(ulong (*entry)(int, char * const []), int argc, + char * const argv[]) +{ + int ret = 0; + + if (current_el() > 1) { + smp_kick_all_cpus(); + dcache_disable(); + armv8_switch_to_el1(0x0, 0, 0, 0, (unsigned long)entry, + ES_TO_AARCH64); + } else { + printf("FAIL: current EL is not above EL1\n"); + ret = EINVAL; + } + return ret; +} + #if !defined(CONFIG_SYS_SDRAM_BASE) && !defined(CONFIG_SYS_SDRAM_SIZE) int dram_init_banksize(void) { |