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| author | Ye.Li <B37916@freescale.com> | 2014-07-16 13:53:34 +0800 |
|---|---|---|
| committer | Peng Fan <Peng.Fan@freescale.com> | 2015-04-29 14:43:08 +0800 |
| commit | 701733cf4c70d152af5b22159a44069427f54752 (patch) | |
| tree | c320efd0b60cc4b0937c90b62698c0e6f673c9eb /common | |
| parent | 541c536fa416775ea2094f43b3241e12a49720c8 (diff) | |
| download | u-boot-imx-701733cf4c70d152af5b22159a44069427f54752.zip u-boot-imx-701733cf4c70d152af5b22159a44069427f54752.tar.gz u-boot-imx-701733cf4c70d152af5b22159a44069427f54752.tar.bz2 | |
ENGR00322860 iMX6SX: Add function to check M4 status before booting
Add new function "arch_auxiliary_core_check_up" to check whether M4
is already up. Therefore, avoid starting M4 again when it is running.
Signed-off-by: Ye.Li <B37916@freescale.com>
(cherry picked from commit 54a0803b29c5ab459bedfb2c68c1e94b89866aa1)
Signed-off-by: Peng Fan <Peng.Fan@freescale.com>
Diffstat (limited to 'common')
| -rw-r--r-- | common/cmd_bootaux.c | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/common/cmd_bootaux.c b/common/cmd_bootaux.c index 188cb73..b15de0e 100644 --- a/common/cmd_bootaux.c +++ b/common/cmd_bootaux.c @@ -16,14 +16,30 @@ static int __arch_auxiliary_core_up(u32 core_id, u32 boot_private_data) int arch_auxiliary_core_up(u32 core_id, u32 boot_private_data) __attribute__((weak, alias("__arch_auxiliary_core_up"))); +/* Allow for arch specific config before we boot */ +static int __arch_auxiliary_core_check_up(u32 core_id) +{ + /* please define platform specific arch_auxiliary_core_check_up() */ + return 0; +} + +int arch_auxiliary_core_check_up(u32 core_id) + __attribute__((weak, alias("__arch_auxiliary_core_check_up"))); + int do_bootaux(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) { ulong addr; - int ret; + int ret, up; if (argc < 2) return CMD_RET_USAGE; + up = arch_auxiliary_core_check_up(0); + if (up) { + printf("## Auxiliary core is already up\n"); + return CMD_RET_SUCCESS; + } + addr = simple_strtoul(argv[1], NULL, 16); printf("## Starting auxiliary core at 0x%08lX ...\n", addr); |