Add qemu 2.4.0

[kvmfornfv.git] / qemu / roms / u-boot / arch / powerpc / cpu / mpc5xxx / speed.c

diff --git a/qemu/roms/u-boot/arch/powerpc/cpu/mpc5xxx/speed.c b/qemu/roms/u-boot/arch/powerpc/cpu/mpc5xxx/speed.c
new file mode 100644 (file)
index 0000000..30a0a35
--- /dev/null
+++ b/qemu/roms/u-boot/arch/powerpc/cpu/mpc5xxx/speed.c
@@ -0,0 +1,84 @@
+/*
+ * (C) Copyright 2000-2002
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * SPDX-License-Identifier:    GPL-2.0+
+ */
+
+#include <common.h>
+#include <mpc5xxx.h>
+#include <asm/processor.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+/* ------------------------------------------------------------------------- */
+
+/* Bus-to-Core Multipliers */
+
+static int bus2core[] = {
+       3, 2, 2, 2, 4, 4, 5, 9,
+       6, 11, 8, 10, 3, 12, 7, 0,
+       6, 5, 13, 2, 14, 4, 15, 9,
+       0, 11, 8, 10, 16, 12, 7, 0
+};
+/* ------------------------------------------------------------------------- */
+
+/*
+ *
+ */
+
+int get_clocks (void)
+{
+       ulong val, vco;
+
+#if !defined(CONFIG_SYS_MPC5XXX_CLKIN)
+#error clock measuring not implemented yet - define CONFIG_SYS_MPC5XXX_CLKIN
+#endif
+
+       val = *(vu_long *)MPC5XXX_CDM_PORCFG;
+       if (val & (1 << 6)) {
+               vco = CONFIG_SYS_MPC5XXX_CLKIN * 12;
+       } else {
+               vco = CONFIG_SYS_MPC5XXX_CLKIN * 16;
+       }
+       if (val & (1 << 5)) {
+               gd->bus_clk = vco / 8;
+       } else {
+               gd->bus_clk = vco / 4;
+       }
+       gd->cpu_clk = gd->bus_clk * bus2core[val & 0x1f] / 2;
+
+       val = *(vu_long *)MPC5XXX_CDM_CFG;
+       if (val & (1 << 8)) {
+               gd->arch.ipb_clk = gd->bus_clk / 2;
+       } else {
+               gd->arch.ipb_clk = gd->bus_clk;
+       }
+       switch (val & 3) {
+       case 0:
+               gd->pci_clk = gd->arch.ipb_clk;
+               break;
+       case 1:
+               gd->pci_clk = gd->arch.ipb_clk / 2;
+               break;
+       default:
+               gd->pci_clk = gd->bus_clk / 4;
+               break;
+       }
+
+       return (0);
+}
+
+int prt_mpc5xxx_clks (void)
+{
+       char buf1[32], buf2[32], buf3[32];
+
+       printf ("       Bus %s MHz, IPB %s MHz, PCI %s MHz\n",
+               strmhz(buf1, gd->bus_clk),
+               strmhz(buf2, gd->arch.ipb_clk),
+               strmhz(buf3, gd->pci_clk)
+       );
+       return (0);
+}
+
+/* ------------------------------------------------------------------------- */