fix compiling issue;sound issue;widevine support;enterprise enrollment support

Author: yunshansimon

baseboard-rpi3/chromeos-base/snd_bcm2835-spec/files/snd_bcm2835.conf

@@ -1 +1 @@
-options snd_bcm2835 force_bulk enable_headphones enable_hdmi
+options snd_bcm2835 enable_headphones enable_hdmi

baseboard-rpi3/media-libs/mesa/mesa-19.2.0_rc4.ebuild

@@ -10,7 +10,7 @@ EGIT_REPO_URI="https://gitlab.freedesktop.org/mesa/mesa.git"
 EGIT_BRANCH="19.2"
 EGIT_COMMIT="71fafc13b9491f4ccc75fa821008fb863ffdb033"
 
-inherit base multilib flag-o-matic meson toolchain-funcs git-r3
+inherit base multilib flag-o-matic meson toolchain-funcs git-2
 
 FOLDER="${PV/_rc*/}"
 [[ ${PV/_rc*/} == ${PV} ]] || FOLDER+="/RC"

baseboard-rpi3/media-sound/adhd/adhd-9999.ebuild

@@ -187,6 +187,8 @@ src_install() {
 	# Install asound.conf for CRAS alsa plugin
 	insinto /etc
 	doins "${FILESDIR}"/asound.conf
+  insinto /etc/init
+  doins ${FILESDIR}/cras_monitor.conf
 }
 
 pkg_preinst() {

baseboard-rpi3/media-sound/adhd/files/fix_brcm_snd_issue.patch

@@ -12,7 +12,7 @@ index 0acf7ef3..070dd007 100644
  		clock_gettime(CLOCK_MONOTONIC_RAW, &last_wake);
  		ATLOG(atlog, AUDIO_THREAD_WAKE, rc, 0, 0);
 diff --git a/cras/src/tools/cras_monitor/cras_monitor.c b/cras/src/tools/cras_monitor/cras_monitor.c
-index d021669a..bd63cab4 100644
+index d021669a..0b2808f9 100644
 --- a/cras/src/tools/cras_monitor/cras_monitor.c
 +++ b/cras/src/tools/cras_monitor/cras_monitor.c
 @@ -166,12 +166,20 @@ static void input_node_gain_changed(void *context, cras_node_id_t node_id,
@@ -36,3 +36,11 @@ index d021669a..bd63cab4 100644
  }
 
  static void server_connection_callback(struct cras_client *client,
+@@ -308,6 +316,7 @@ int main(int argc, char **argv)
+ 		rc = read(STDIN_FILENO, &c, 1);
+ 		if (rc < 0 || c == 'q')
+ 			return 0;
++    sleep(1);
+ 	}
+ 
+ destroy_exit:

baseboard-rpi3/profiles/base/package.mask

@@ -1,2 +1,3 @@
 chromeos-base/vpd::chromiumos
 media-sound/adhd::chromiumos
+media-libs/minigbm::chromiumos

baseboard-rpi3/scripts/board_specific_setup.sh

@@ -26,13 +26,9 @@ install_raspberrypi_bootloader() {
   local efi_size=$(( efi_size_sectors * 512 ))
   local mount_opts=loop,offset=${efi_offset},sizelimit=${efi_size}
   local efi_dir=$(mktemp -d)
-  local arch=$2
-  local kernel_img=""
-  local target_img=""
-  if [ "${arch}" == "arm" ]; then
-    kernel_img=$(ls "${ROOT}/boot/zImage-"*)
-    target_img="${efi_dir}/kernel7.img"
-  else
+  local kernel_img=$(ls "${ROOT}/boot/zImage-"*)
+  local target_img="${efi_dir}/kernel7.img"
+  if [ -z "$kernel_img" ]; then
     kernel_img=$(ls "${ROOT}/boot/Image"*)
     target_img="${efi_dir}/kernel8.img"
   fi
@@ -46,8 +42,7 @@ install_raspberrypi_bootloader() {
 }
 
 board_setup() {
-  info "install kernel and loader for ${CHROMEOS_KERNEL_ARCH}"
-  install_raspberrypi_bootloader "$1" $CHROMEOS_KERNEL_ARCH
+  install_raspberrypi_bootloader "$1" 
   install_hybrid_mbr "$1"
 }