diff options
Diffstat (limited to 'host/lib/crossystem.c')
| -rw-r--r-- | host/lib/crossystem.c | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/host/lib/crossystem.c b/host/lib/crossystem.c index b4962591..ba614ccb 100644 --- a/host/lib/crossystem.c +++ b/host/lib/crossystem.c @@ -62,11 +62,12 @@ typedef enum VbBuildOption { /* Masks for kern_nv usage by kernel. */ #define KERN_NV_FWUPDATE_TRIES_MASK 0x0000000F +#define KERN_NV_BLOCK_DEVMODE_FLAG 0x00000010 /* If you want to use the remaining currently-unused bits in kern_nv * for something kernel-y, define a new field (the way we did for * fwupdate_tries). Don't just modify kern_nv directly, because that * makes it too easy to accidentally corrupt other sub-fields. */ -#define KERN_NV_CURRENTLY_UNUSED 0xFFFFFFF0 +#define KERN_NV_CURRENTLY_UNUSED 0xFFFFFFE0 /* Return true if the FWID starts with the specified string. */ int FwidStartsWith(const char *start) { @@ -449,6 +450,12 @@ int VbGetSystemPropertyInt(const char* name) { value = VbGetNvStorage(VBNV_KERNEL_FIELD); if (value != -1) value &= KERN_NV_FWUPDATE_TRIES_MASK; + } else if (!strcasecmp(name,"block_devmode")) { + value = VbGetNvStorage(VBNV_KERNEL_FIELD); + if (value != -1) { + value &= KERN_NV_BLOCK_DEVMODE_FLAG; + value = !!value; + } } else if (!strcasecmp(name,"loc_idx")) { value = VbGetNvStorage(VBNV_LOCALIZATION_INDEX); } else if (!strcasecmp(name,"dev_boot_usb")) { @@ -558,6 +565,14 @@ int VbSetSystemPropertyInt(const char* name, int value) { kern_nv &= ~KERN_NV_FWUPDATE_TRIES_MASK; kern_nv |= (value & KERN_NV_FWUPDATE_TRIES_MASK); return VbSetNvStorage(VBNV_KERNEL_FIELD, kern_nv); + } else if (!strcasecmp(name,"block_devmode")) { + int kern_nv = VbGetNvStorage(VBNV_KERNEL_FIELD); + if (kern_nv == -1) + return -1; + kern_nv &= ~KERN_NV_BLOCK_DEVMODE_FLAG; + if (value) + kern_nv |= KERN_NV_BLOCK_DEVMODE_FLAG; + return VbSetNvStorage(VBNV_KERNEL_FIELD, kern_nv); } else if (!strcasecmp(name,"loc_idx")) { return VbSetNvStorage(VBNV_LOCALIZATION_INDEX, value); } else if (!strcasecmp(name,"dev_boot_usb")) { |