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[Qemu-ppc] [PATCH 19/58] PPC: bamboo: Use kvm api for freq and clock fre
From: |
Alexander Graf |
Subject: |
[Qemu-ppc] [PATCH 19/58] PPC: bamboo: Use kvm api for freq and clock frequencies |
Date: |
Wed, 14 Sep 2011 10:42:43 +0200 |
Now that we have nice and shiny APIs to read out the host's clock and timebase
frequencies, let's use them in the bamboo code as well!
Signed-off-by: Alexander Graf <address@hidden>
---
hw/ppc440_bamboo.c | 45 ++++++++++++---------------------------------
1 files changed, 12 insertions(+), 33 deletions(-)
diff --git a/hw/ppc440_bamboo.c b/hw/ppc440_bamboo.c
index 65d4f0f..1523764 100644
--- a/hw/ppc440_bamboo.c
+++ b/hw/ppc440_bamboo.c
@@ -31,38 +31,6 @@
#define FDT_ADDR 0x1800000
#define RAMDISK_ADDR 0x1900000
-#ifdef CONFIG_FDT
-static int bamboo_copy_host_cell(void *fdt, const char *node, const char *prop)
-{
- uint32_t cell;
- int ret;
-
- ret = kvmppc_read_host_property(node, prop, &cell, sizeof(cell));
- if (ret < 0) {
- fprintf(stderr, "couldn't read host %s/%s\n", node, prop);
- goto out;
- }
-
- ret = qemu_devtree_setprop_cell(fdt, node, prop, cell);
- if (ret < 0) {
- fprintf(stderr, "couldn't set guest %s/%s\n", node, prop);
- goto out;
- }
-
-out:
- return ret;
-}
-
-static void bamboo_fdt_update(void *fdt)
-{
- /* Copy data from the host device tree into the guest. Since the guest can
- * directly access the timebase without host involvement, we must expose
- * the correct frequencies. */
- bamboo_copy_host_cell(fdt, "/cpus/address@hidden", "clock-frequency");
- bamboo_copy_host_cell(fdt, "/cpus/address@hidden", "timebase-frequency");
-}
-#endif
-
static int bamboo_load_device_tree(target_phys_addr_t addr,
uint32_t ramsize,
target_phys_addr_t initrd_base,
@@ -75,6 +43,8 @@ static int bamboo_load_device_tree(target_phys_addr_t addr,
char *filename;
int fdt_size;
void *fdt;
+ uint32_t tb_freq = 400000000;
+ uint32_t clock_freq = 400000000;
filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, BINARY_DEVICE_TREE_FILE);
if (!filename) {
@@ -108,10 +78,19 @@ static int bamboo_load_device_tree(target_phys_addr_t addr,
if (ret < 0)
fprintf(stderr, "couldn't set /chosen/bootargs\n");
+ /* Copy data from the host device tree into the guest. Since the guest can
+ * directly access the timebase without host involvement, we must expose
+ * the correct frequencies. */
if (kvm_enabled()) {
- bamboo_fdt_update(fdt);
+ tb_freq = kvmppc_get_tbfreq();
+ clock_freq = kvmppc_get_clockfreq();
}
+ qemu_devtree_setprop_cell(fdt, "/cpus/address@hidden", "clock-frequency",
+ clock_freq);
+ qemu_devtree_setprop_cell(fdt, "/cpus/address@hidden",
"timebase-frequency",
+ tb_freq);
+
ret = rom_add_blob_fixed(BINARY_DEVICE_TREE_FILE, fdt, fdt_size, addr);
g_free(fdt);
--
1.6.0.2
- [Qemu-ppc] [PULL 00/58] ppc patch queue 2011-09-14, Alexander Graf, 2011/09/14
- [Qemu-ppc] [PATCH 57/58] PPC: Fix heathrow PIC to use little endian MMIO, Alexander Graf, 2011/09/14
- [Qemu-ppc] [PATCH 55/58] ppc: move ADB stuff from ppc_mac.h to adb.h, Alexander Graf, 2011/09/14
- [Qemu-ppc] [PATCH 45/58] ppc: booke206: add "info tlb" support, Alexander Graf, 2011/09/14
- [Qemu-ppc] [PATCH 22/58] PPC: E500: Update freqs for all CPUs, Alexander Graf, 2011/09/14
- [Qemu-ppc] [PATCH 08/58] PPC: Set MPIC IDE for IPI to 0, Alexander Graf, 2011/09/14
- [Qemu-ppc] [PATCH 15/58] PPC: bamboo: Move host fdt copy to target, Alexander Graf, 2011/09/14
- [Qemu-ppc] [PATCH 19/58] PPC: bamboo: Use kvm api for freq and clock frequencies,
Alexander Graf <=
- [Qemu-ppc] [PATCH 03/58] spapr: make irq customizable via qdev, Alexander Graf, 2011/09/14
- [Qemu-ppc] [PATCH 10/58] PPC: MPIC: Fix CI bit definitions, Alexander Graf, 2011/09/14
- [Qemu-ppc] [PATCH 48/58] pseries: Implement hcall-bulk hypervisor interface, Alexander Graf, 2011/09/14
- [Qemu-ppc] [PATCH 21/58] PPC: KVM: Add stubs for kvm helper functions, Alexander Graf, 2011/09/14
- [Qemu-ppc] [PATCH 09/58] PPC: MPIC: Remove read functionality for WO registers, Alexander Graf, 2011/09/14
- [Qemu-ppc] [PATCH 12/58] PPC: E500: create multiple envs, Alexander Graf, 2011/09/14
- [Qemu-ppc] [PATCH 16/58] PPC: KVM: Add generic function to read host clockfreq, Alexander Graf, 2011/09/14