From 1e26f648885719cb6a105ae3562e8d840e75a6b8 Mon Sep 17 00:00:00 2001 From: Lihua Zhao Date: Fri, 15 Nov 2019 00:21:17 -0800 Subject: bootm: vxworks: Support Linux compatible standard DTB for ARM and PPC Enhance do_bootm_vxworks() to support Linux compatible standard DTB for ARM and PPC, when the least significant bit of flags in VxWorks bootargs is set. Otherwise it falls back to the existing bootm flow which is now legacy. Signed-off-by: Lihua Zhao Signed-off-by: Bin Meng Reviewed-by: Bin Meng --- common/bootm_os.c | 39 +++++++++++++++++++++++++++++++++++++-- 1 file changed, 37 insertions(+), 2 deletions(-) (limited to 'common/bootm_os.c') diff --git a/common/bootm_os.c b/common/bootm_os.c index de0709f..d89ddc3 100644 --- a/common/bootm_os.c +++ b/common/bootm_os.c @@ -319,8 +319,8 @@ static void do_bootvx_fdt(bootm_headers_t *images) puts("## vxWorks terminated\n"); } -int do_bootm_vxworks(int flag, int argc, char * const argv[], - bootm_headers_t *images) +static int do_bootm_vxworks_legacy(int flag, int argc, char * const argv[], + bootm_headers_t *images) { if (flag != BOOTM_STATE_OS_GO) return 0; @@ -336,6 +336,41 @@ int do_bootm_vxworks(int flag, int argc, char * const argv[], return 1; } + +int do_bootm_vxworks(int flag, int argc, char * const argv[], + bootm_headers_t *images) +{ + char *bootargs; + int pos; + unsigned long vxflags; + bool std_dtb = false; + + /* get bootargs env */ + bootargs = env_get("bootargs"); + + if (bootargs != NULL) { + for (pos = 0; pos < strlen(bootargs); pos++) { + /* find f=0xnumber flag */ + if ((bootargs[pos] == '=') && (pos >= 1) && + (bootargs[pos - 1] == 'f')) { + vxflags = simple_strtoul(&bootargs[pos + 1], + NULL, 16); + if (vxflags & VXWORKS_SYSFLG_STD_DTB) + std_dtb = true; + } + } + } + + if (std_dtb) { + if (flag & BOOTM_STATE_OS_PREP) + printf(" Using standard DTB\n"); + return do_bootm_linux(flag, argc, argv, images); + } else { + if (flag & BOOTM_STATE_OS_PREP) + printf(" !!! WARNING !!! Using legacy DTB\n"); + return do_bootm_vxworks_legacy(flag, argc, argv, images); + } +} #endif #if defined(CONFIG_CMD_ELF) -- cgit v1.1