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authorTimur Tabi <timur@freescale.com>2011-05-19 08:54:27 -0500
committerKumar Gala <galak@kernel.crashing.org>2011-06-27 08:30:19 -0500
commitbd497fc9782769d5bce58fbf468eabfce9e98ce0 (patch)
tree0dcbc696f096c42d9e6604ef6a07e167a5e01225 /arch/powerpc/sysdev/Makefile
parent6ec36b5848a8336d3a0010727b9365c3254d2d2e (diff)
powerpc: introduce ePAPR embedded hypervisor hcall interface
ePAPR hypervisors provide operating system services via a "hypercall" interface. The following steps need to be performed to make an hcall: 1. Load r11 with the hcall number 2. Load specific other registers with parameters 3. Issue instrucion "sc 1" 4. The return code is in r3 5. Other returned parameters are in other registers. To provide this service to the kernel, these steps are wrapped in inline assembly functions. Standard ePAPR hcalls are in epapr_hcalls.h, and Freescale extensions are in fsl_hcalls.h. Signed-off-by: Timur Tabi <timur@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/sysdev/Makefile')
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