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path: root/src/soc/nvidia/tegra132/psci.c
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2015-05-21Remove address from GPLv2 headersPatrick Georgi
As per discussion with lawyers[tm], it's not a good idea to shorten the license header too much - not for legal reasons but because there are tools that look for them, and giving them a standard pattern simplifies things. However, we got confirmation that we don't have to update every file ever added to coreboot whenever the FSF gets a new lease, but can drop the address instead. util/kconfig is excluded because that's imported code that we may want to synchronize every now and then. $ find * -type f -exec sed -i "s:Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, *MA[, ]*02110-1301[, ]*USA:Foundation, Inc.:" {} + $ find * -type f -exec sed -i "s:Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA:Foundation, Inc.:" {} + $ find * -type f -exec sed -i "s:Foundation, Inc., 59 Temple Place[-, ]*Suite 330, Boston, MA *02111-1307[, ]*USA:Foundation, Inc.:" {} + $ find * -type f -exec sed -i "s:Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.:Foundation, Inc.:" {} + $ find * -type f -a \! -name \*.patch \ -a \! -name \*_shipped \ -a \! -name LICENSE_GPL \ -a \! -name LGPL.txt \ -a \! -name COPYING \ -a \! -name DISCLAIMER \ -exec sed -i "/Foundation, Inc./ N;s:Foundation, Inc.* USA\.* *:Foundation, Inc. :;s:Foundation, Inc. $:Foundation, Inc.:" {} + Change-Id: Icc968a5a5f3a5df8d32b940f9cdb35350654bef9 Signed-off-by: Patrick Georgi <pgeorgi@chromium.org> Reviewed-on: http://review.coreboot.org/9233 Tested-by: build bot (Jenkins) Reviewed-by: Vladimir Serbinenko <phcoder@gmail.com>
2015-04-10tegra132: psci: add cpu_on/off supportJoseph Lo
The CPU on/off functions are the method for the Kernel to support CPU hot-plug function in PSCI. To support this, we still need flow controller support to capture the WFI from the CPU and inform PMC to power gate the CPU core. On the other path, we turn on the CPU by toggling the PMC and use flow controller to let go when the power is steady. BUG=chrome-os-partner:32136 BRANCH=None TEST=built the kernel with PSCI enabled, check both of the CPUs are coming up, test the CPU hot-plug is working on Ryu Change-Id: If2c529b6719c5747d5aea95fb5049b2d7353ff17 Signed-off-by: Patrick Georgi <pgeorgi@chromium.org> Original-Commit-Id: 0f078e89daad1c4d8b342a395f36b3e922af66f5 Original-Change-Id: Ie49940adb2966dcc9967d2fcc9b1e0dcd6d98743 Original-Signed-off-by: Joseph Lo <josephl@nvidia.com> Original-Reviewed-on: https://chromium-review.googlesource.com/231267 Original-Reviewed-by: Aaron Durbin <adurbin@chromium.org> Reviewed-on: http://review.coreboot.org/9542 Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net> Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2015-04-10tegra132: prepare cpu startup in psciAaron Durbin
In order to start CPUs while in secmon/psci one needs to set up the proper SoC state. Therefore, refactor the current CPU startup API to allow for this by adding cpu_prepare_startup() and start_cpu_silent(). BUG=chrome-os-partner:32136 BRANCH=None TEST=Built and booted kernel. Change-Id: I1424500f6c9398f7d44350949c25bb3d4832cec7 Signed-off-by: Patrick Georgi <pgeorgi@chromium.org> Original-Commit-Id: 70f9cf67085b345b529b41dd6554e37d38a5b350 Original-Change-Id: I842a391d3e27ddbfcdef1a2d60e3c66e60f99c77 Original-Signed-off-by: Aaron Durbin <adurbin@chromium.org> Original-Reviewed-on: https://chromium-review.googlesource.com/231936 Original-Reviewed-by: Furquan Shaikh <furquan@chromium.org> Reviewed-on: http://review.coreboot.org/9531 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2015-04-10arm64: Implement PSCI command supportAaron Durbin
Provide support for SoCs to participate in PSCI commands. There are 2 steps to a command: 1. prepare() - look at request and adjust state accordingly 2. commit() - take action on the command The prepare() function is called with psci locks held while the commit() function is called with the locks dropped. No SoC implements the appropriate logic yet. BUG=chrome-os-partner:32136 BRANCH=None TEST=Booted PSCI kernel -- no SMP because cmd_prepare() knowingly fails. Spintable kernel still brings up both CPUs. Change-Id: I2ae4d1c3f3eac4d1060c1b41472909933815d078 Signed-off-by: Patrick Georgi <pgeorgi@chromium.org> Original-Commit-Id: 698d38b53bbc2bc043548792cea7219542b5fe6b Original-Change-Id: I0821dc2ee8dc6bd1e8bc1c10f8b98b10e24fc97e Original-Signed-off-by: Aaron Durbin <adurbin@chromium.org> Original-Reviewed-on: https://chromium-review.googlesource.com/226485 Original-Reviewed-by: Furquan Shaikh <furquan@chromium.org> Reviewed-on: http://review.coreboot.org/9423 Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org> Tested-by: build bot (Jenkins)
2015-04-10arm64: secmon: add entry point for turned on CPUsAaron Durbin
Newly turned on CPUs need a place to go bring its EL3 state inline with expectations. Plumb this path in for CPUs turning on as well as waking up from a power down state. Some of the infrastructure declarations were moved around for easier consumption in ramstage and secmon. Lastly, a psci_soc_init() is added to inform the SoC of the CPU's entry point as well do any initialization. BUG=chrome-os-partner:32112 BRANCH=None TEST=Built and booted. On entry point not actually utilized. Change-Id: I2af424c2906df159f78ed5e0a26a6bc0ba2ba24f Signed-off-by: Patrick Georgi <pgeorgi@chromium.org> Original-Commit-Id: dbefec678a111e8b42acf2ae162c1ccdd7f9fd40 Original-Change-Id: I7b8c8c828ffb73752ca3ac1117cd895a5aa275d8 Original-Signed-off-by: Aaron Durbin <adurbin@chromium.org> Original-Reviewed-on: https://chromium-review.googlesource.com/228296 Original-Reviewed-by: Furquan Shaikh <furquan@chromium.org> Reviewed-on: http://review.coreboot.org/9422 Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org> Tested-by: build bot (Jenkins)
2015-04-09arm64: psci: add node hierarchyAaron Durbin
In order to properly support more arm64 SoCs PSCI needs to handle the hierarchy of cpus/clusters within the SoC. The nodes within PSCI are kept in a tree as well as a depth-first ordered array of same tree. Additionally, the PSCI states are now maintained in a hierachal manner. OFF propogates up the tree as long as all siblings are set to OFF. ON propogates up the tree until a node is not already set to OFF. The SoC provides the operations for determining how many children are at a given affinity level. Lastly, the secmon startup has been reworked in that all non-BSP CPUs wait for instructions from the BSP. BUG=chrome-os-partner:32136 BRANCH=None TEST=Can still boot into kernel with SMP. Change-Id: I036fabaf0f1cefa2841264c47e4092c75a2ff4dc Signed-off-by: Patrick Georgi <pgeorgi@chromium.org> Original-Commit-Id: 721d408cd110e1b56d38789177b740aa0e54ca33 Original-Change-Id: I520a9726e283bee7edcb514cda28ec1eb31b5ea0 Original-Signed-off-by: Aaron Durbin <adurbin@chromium.org> Original-Reviewed-on: https://chromium-review.googlesource.com/226480 Original-Reviewed-by: Furquan Shaikh <furquan@chromium.org> Reviewed-on: http://review.coreboot.org/9390 Tested-by: build bot (Jenkins) Reviewed-by: Furquan Shaikh <furquan@google.com>