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2017-06-26Add "cleanup_global_tlb" for P9 and laterBenjamin Herrenschmidt1-0/+60
Uses broadcast TLBIE's to cleanup the TLB on all cores and on the nest MMU By default this works with older binutils but there is a version (in #defines) that requires newer binutils and which documents what the instructions are. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Michael Neuling <mikey@neuling.org> Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2017-06-26Rename cleanup_tlb() to cleanup_local_tlb()Benjamin Herrenschmidt1-2/+2
It uses tlbiel and only cleans up the TLB of the calling core Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Michael Neuling <mikey@neuling.org> Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2017-06-26Move cleanup_tlb from head.S to misc.SBenjamin Herrenschmidt1-0/+13
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Michael Neuling <mikey@neuling.org> Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2016-11-02mambo: Convert RTC read from asm to CMichael Neuling1-8/+0
Also moves some code around to ensure things are defined before they are used. Signed-off-by: Michael Neuling <mikey@neuling.org> Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2016-11-02mambo: Convert console read/write from asm to CMichael Neuling1-18/+0
Also changes the function name: mambo_read/write() -> mambo_console_read/write() Signed-off-by: Michael Neuling <mikey@neuling.org> Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2016-11-02mambo: Convert sim exit from asm to CMichael Neuling1-6/+0
Signed-off-by: Michael Neuling <mikey@neuling.org> Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2016-05-10Make trigger_attn() enable attn alsoMichael Neuling1-2/+2
This changes trigger_attn() to also enable attn via HID0, so callers don't have to do it themselves. Signed-off-by: Michael Neuling <mikey@neuling.org> Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2015-05-27Add Mambo platformStewart Smith1-0/+8
By adding an explicit mambo platform we can do tricks like a fake NVRAM, actually get RTC from mambo and generally be a bit better in a simulator Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2015-04-01core: Add support for cec_power_down() on mamboMichael Ellerman1-0/+5
Currently when running on mambo OPAL_CEC_POWER_DOWN doesn't work, the simulator keeps running. We can use the magic mambo support instruction with the right opcode to ask mambo to stop the simulation. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2014-12-01Add tweaks to work in Mambo simulatorBenjamin Herrenschmidt1-0/+19
Mambo doesn't implement various things such as PBA SCOMs, LPC, ChipTOD, etc... It also provides a special console hook. This adds detection of Mambo via the /mambo node, and enables us to boot all the way to Linux. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2014-11-17Stack checking extensionsBenjamin Herrenschmidt1-0/+9
This patch adds: - Normal builds are done with -fstack-protector (we want to investigate using -fstack-protector-strong on gcc4.9 but for now we just use that - Build with STACK_CHECK=1 will use -fstack-protector-all and -pg and will check the stack in mcount Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2014-07-02Initial commit of Open Source releaseBenjamin Herrenschmidt1-0/+43
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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