This patch adds a "pseries" machine to qemu. This aims to emulate a logical partition on an IBM pSeries machine, compliant to the "PowerPC Architecture Platform Requirements" (PAPR) document. This initial version is quite limited, it implements a basic machine and PAPR hypercall emulation. So far only one hypercall is present - H_PUT_TERM_CHAR - so that a (write-only) console is available. Multiple CPUs are permitted, with SMP entry handled kexec() style. The machine so far more resembles an old POWER4 style "full system partition" rather than a modern LPAR, in that the guest manages the page tables directly, rather than via hypercalls. The machine requires qemu to be configured with --enable-fdt. The machine can (so far) only be booted with -kernel - i.e. no partition firmware is provided. Signed-off-by: David Gibson <dwg@au1.ibm.com> Signed-off-by: Alexander Graf <agraf@suse.de>
42 lines
981 B
C
42 lines
981 B
C
#include "sysemu.h"
|
|
#include "cpu.h"
|
|
#include "qemu-char.h"
|
|
#include "hw/spapr.h"
|
|
|
|
spapr_hcall_fn hypercall_table[(MAX_HCALL_OPCODE / 4) + 1];
|
|
|
|
void spapr_register_hypercall(target_ulong opcode, spapr_hcall_fn fn)
|
|
{
|
|
spapr_hcall_fn old_fn;
|
|
|
|
assert(opcode <= MAX_HCALL_OPCODE);
|
|
assert((opcode & 0x3) == 0);
|
|
|
|
old_fn = hypercall_table[opcode / 4];
|
|
|
|
assert(!old_fn || (fn == old_fn));
|
|
|
|
hypercall_table[opcode / 4] = fn;
|
|
}
|
|
|
|
target_ulong spapr_hypercall(CPUState *env, target_ulong opcode,
|
|
target_ulong *args)
|
|
{
|
|
if (msr_pr) {
|
|
hcall_dprintf("Hypercall made with MSR[PR]=1\n");
|
|
return H_PRIVILEGE;
|
|
}
|
|
|
|
if ((opcode <= MAX_HCALL_OPCODE)
|
|
&& ((opcode & 0x3) == 0)) {
|
|
spapr_hcall_fn fn = hypercall_table[opcode / 4];
|
|
|
|
if (fn) {
|
|
return fn(env, spapr, opcode, args);
|
|
}
|
|
}
|
|
|
|
hcall_dprintf("Unimplemented hcall 0x" TARGET_FMT_lx "\n", opcode);
|
|
return H_FUNCTION;
|
|
}
|