9fdf0c2995
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"
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#include "cpu.h"
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#include "qemu-char.h"
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#include "hw/spapr.h"
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spapr_hcall_fn hypercall_table[(MAX_HCALL_OPCODE / 4) + 1];
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void spapr_register_hypercall(target_ulong opcode, spapr_hcall_fn fn)
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{
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spapr_hcall_fn old_fn;
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assert(opcode <= MAX_HCALL_OPCODE);
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assert((opcode & 0x3) == 0);
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old_fn = hypercall_table[opcode / 4];
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assert(!old_fn || (fn == old_fn));
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hypercall_table[opcode / 4] = fn;
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}
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target_ulong spapr_hypercall(CPUState *env, target_ulong opcode,
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target_ulong *args)
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{
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if (msr_pr) {
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hcall_dprintf("Hypercall made with MSR[PR]=1\n");
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return H_PRIVILEGE;
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}
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if ((opcode <= MAX_HCALL_OPCODE)
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&& ((opcode & 0x3) == 0)) {
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spapr_hcall_fn fn = hypercall_table[opcode / 4];
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if (fn) {
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return fn(env, spapr, opcode, args);
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}
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}
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hcall_dprintf("Unimplemented hcall 0x" TARGET_FMT_lx "\n", opcode);
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return H_FUNCTION;
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}
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