diff options
| author | Alexander Graf <agraf@suse.de> | 2011-06-15 23:34:04 +0200 |
|---|---|---|
| committer | Alexander Graf <agraf@suse.de> | 2011-06-17 02:58:28 +0200 |
| commit | 5de6b46db51cb34857c8bfaef355e048fbc6e020 (patch) | |
| tree | f4b70493f9be39f92f1038caebf0a714ec044e23 /hw | |
| parent | b9e17a345382ebb91446fd6cf0bb8f0eb5ba5706 (diff) | |
PPC: mpc8544ds: Add hypervisor node
When running a PPC guest with KVM that can do PV operations, we need
to indicate the guest which instructions to use for a hypercall and
that it is running as KVM guest.
This logic was available on openbios based machines already. This patch
also adds said functionality to the mpc8544ds machine.
Signed-off-by: Alexander Graf <agraf@suse.de>
Acked-by: Scott Wood <scottwood@freescale.com>
Diffstat (limited to 'hw')
| -rw-r--r-- | hw/ppce500_mpc8544ds.c | 21 |
1 files changed, 15 insertions, 6 deletions
diff --git a/hw/ppce500_mpc8544ds.c b/hw/ppce500_mpc8544ds.c index 3ba8e75e2b..073de3c052 100644 --- a/hw/ppce500_mpc8544ds.c +++ b/hw/ppce500_mpc8544ds.c @@ -82,11 +82,12 @@ out: } #endif -static int mpc8544_load_device_tree(target_phys_addr_t addr, - uint32_t ramsize, - target_phys_addr_t initrd_base, - target_phys_addr_t initrd_size, - const char *kernel_cmdline) +static int mpc8544_load_device_tree(CPUState *env, + target_phys_addr_t addr, + uint32_t ramsize, + target_phys_addr_t initrd_base, + target_phys_addr_t initrd_size, + const char *kernel_cmdline) { int ret = -1; #ifdef CONFIG_FDT @@ -94,6 +95,7 @@ static int mpc8544_load_device_tree(target_phys_addr_t addr, char *filename; int fdt_size; void *fdt; + uint8_t hypercall[16]; filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, BINARY_DEVICE_TREE_FILE); if (!filename) { @@ -157,6 +159,13 @@ static int mpc8544_load_device_tree(target_phys_addr_t addr, mpc8544_copy_soc_cell(fdt, buf, "clock-frequency"); mpc8544_copy_soc_cell(fdt, buf, "timebase-frequency"); + + /* indicate KVM hypercall interface */ + qemu_devtree_setprop_string(fdt, "/hypervisor", "compatible", + "linux,kvm"); + kvmppc_get_hypercall(env, hypercall, sizeof(hypercall)); + qemu_devtree_setprop(fdt, "/hypervisor", "hcall-instructions", + hypercall, sizeof(hypercall)); } else { const uint32_t freq = 400000000; @@ -330,7 +339,7 @@ static void mpc8544ds_init(ram_addr_t ram_size, cpu_abort(env, "Compiled without FDT support - can't load kernel\n"); #endif dt_base = (kernel_size + DTC_LOAD_PAD) & ~DTC_PAD_MASK; - if (mpc8544_load_device_tree(dt_base, ram_size, + if (mpc8544_load_device_tree(env, dt_base, ram_size, initrd_base, initrd_size, kernel_cmdline) < 0) { fprintf(stderr, "couldn't load device tree\n"); exit(1); |