mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-12 07:57:21 +00:00
a009f36cfe
Rather than having an arch-specific function, use the existing generic one. Signed-off-by: Simon Glass <sjg@chromium.org>
84 lines
1.6 KiB
C
84 lines
1.6 KiB
C
/*
|
|
* (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 print_cpuinfo(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);
|
|
}
|
|
|
|
/* ------------------------------------------------------------------------- */
|