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u-boot/arch/powerpc/cpu/mpc8260/speed.c
Stefan Roese a47a12becf Move arch/ppc to arch/powerpc 
As discussed on the list, move "arch/ppc" to "arch/powerpc" to
better match the Linux directory structure.

Please note that this patch also changes the "ppc" target in
MAKEALL to "powerpc" to match this new infrastructure. But "ppc"
is kept as an alias for now, to not break compatibility with
scripts using this name.

Signed-off-by: Stefan Roese <sr@denx.de>
Acked-by: Wolfgang Denk <wd@denx.de>
Acked-by: Detlev Zundel <dzu@denx.de>
Acked-by: Kim Phillips <kim.phillips@freescale.com>
Cc: Peter Tyser <ptyser@xes-inc.com>
Cc: Anatolij Gustschin <agust@denx.de>
2010-04-21 23:42:38 +02:00

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/*
* (C) Copyright 2000-2002
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
*
* See file CREDITS for list of people who contributed to this
* project.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
#include <common.h>
#include <mpc8260.h>
#include <asm/processor.h>
#if defined(CONFIG_BOARD_GET_CPU_CLK_F)
extern unsigned long board_get_cpu_clk_f (void);
#endif
DECLARE_GLOBAL_DATA_PTR;
/* ------------------------------------------------------------------------- */
/* Bus-to-Core Multiplier */
#define _1x 2
#define _1_5x 3
#define _2x 4
#define _2_5x 5
#define _3x 6
#define _3_5x 7
#define _4x 8
#define _4_5x 9
#define _5x 10
#define _5_5x 11
#define _6x 12
#define _6_5x 13
#define _7x 14
#define _7_5x 15
#define _8x 16
#define _byp -1
#define _off -2
#define _unk -3
typedef struct {
int b2c_mult;
int vco_div;
char *freq_60x;
char *freq_core;
} corecnf_t;
/*
* this table based on "Errata to MPC8260 PowerQUICC II User's Manual",
* Rev. 1, 8/2000, page 10.
*/
corecnf_t corecnf_tab[] = {
{ _1_5x, 4, " 33-100", " 33-100" }, /* 0x00 */
{ _1x, 4, " 50-150", " 50-150" }, /* 0x01 */
{ _1x, 8, " 25-75 ", " 25-75 " }, /* 0x02 */
{ _byp, -1, " ?-? ", " ?-? " }, /* 0x03 */
{ _2x, 2, " 50-150", "100-300" }, /* 0x04 */
{ _2x, 4, " 25-75 ", " 50-150" }, /* 0x05 */
{ _2_5x, 2, " 40-120", "100-240" }, /* 0x06 */
{ _4_5x, 2, " 22-65 ", "100-300" }, /* 0x07 */
{ _3x, 2, " 33-100", "100-300" }, /* 0x08 */
{ _5_5x, 2, " 18-55 ", "100-300" }, /* 0x09 */
{ _4x, 2, " 25-75 ", "100-300" }, /* 0x0A */
{ _5x, 2, " 20-60 ", "100-300" }, /* 0x0B */
{ _1_5x, 8, " 16-50 ", " 16-50 " }, /* 0x0C */
{ _6x, 2, " 16-50 ", "100-300" }, /* 0x0D */
{ _3_5x, 2, " 30-85 ", "100-300" }, /* 0x0E */
{ _off, -1, " ?-? ", " ?-? " }, /* 0x0F */
{ _3x, 4, " 16-50 ", " 50-150" }, /* 0x10 */
{ _2_5x, 4, " 20-60 ", " 50-120" }, /* 0x11 */
{ _6_5x, 2, " 15-46 ", "100-300" }, /* 0x12 */
{ _byp, -1, " ?-? ", " ?-? " }, /* 0x13 */
{ _7x, 2, " 14-43 ", "100-300" }, /* 0x14 */
{ _2x, 4, " 25-75 ", " 50-150" }, /* 0x15 */
{ _7_5x, 2, " 13-40 ", "100-300" }, /* 0x16 */
{ _4_5x, 2, " 22-65 ", "100-300" }, /* 0x17 */
{ _unk, -1, " ?-? ", " ?-? " }, /* 0x18 */
{ _5_5x, 2, " 18-55 ", "100-300" }, /* 0x19 */
{ _4x, 2, " 25-75 ", "100-300" }, /* 0x1A */
{ _5x, 2, " 20-60 ", "100-300" }, /* 0x1B */
{ _8x, 2, " 12-38 ", "100-300" }, /* 0x1C */
{ _6x, 2, " 16-50 ", "100-300" }, /* 0x1D */
{ _3_5x, 2, " 30-85 ", "100-300" }, /* 0x1E */
{ _off, -1, " ?-? ", " ?-? " }, /* 0x1F */
};
/* ------------------------------------------------------------------------- */
/*
*
*/
int get_clocks (void)
{
volatile immap_t *immap = (immap_t *) CONFIG_SYS_IMMR;
ulong clkin;
ulong sccr, dfbrg;
ulong scmr, corecnf, busdf, cpmdf, plldf, pllmf;
corecnf_t *cp;
#if !defined(CONFIG_8260_CLKIN)
#error clock measuring not implemented yet - define CONFIG_8260_CLKIN
#else
#if defined(CONFIG_BOARD_GET_CPU_CLK_F)
clkin = board_get_cpu_clk_f ();
#else
clkin = CONFIG_8260_CLKIN;
#endif
#endif
sccr = immap->im_clkrst.car_sccr;
dfbrg = (sccr & SCCR_DFBRG_MSK) >> SCCR_DFBRG_SHIFT;
scmr = immap->im_clkrst.car_scmr;
corecnf = (scmr & SCMR_CORECNF_MSK) >> SCMR_CORECNF_SHIFT;
cp = &corecnf_tab[corecnf];
busdf = (scmr & SCMR_BUSDF_MSK) >> SCMR_BUSDF_SHIFT;
cpmdf = (scmr & SCMR_CPMDF_MSK) >> SCMR_CPMDF_SHIFT;
/* HiP7, HiP7 Rev01, HiP7 RevA */
if ((get_pvr () == PVR_8260_HIP7) ||
(get_pvr () == PVR_8260_HIP7R1) ||
(get_pvr () == PVR_8260_HIP7RA)) {
pllmf = (scmr & SCMR_PLLMF_MSKH7) >> SCMR_PLLMF_SHIFT;
gd->vco_out = clkin * (pllmf + 1);
} else { /* HiP3, HiP4 */
pllmf = (scmr & SCMR_PLLMF_MSK) >> SCMR_PLLMF_SHIFT;
plldf = (scmr & SCMR_PLLDF) ? 1 : 0;
gd->vco_out = (clkin * 2 * (pllmf + 1)) / (plldf + 1);
}
#if 0
if (gd->vco_out / (busdf + 1) != clkin) {
/* aaarrrggghhh!!! */
return (1);
}
#endif
gd->cpm_clk = gd->vco_out / 2;
gd->bus_clk = clkin;
gd->scc_clk = gd->vco_out / 4;
gd->brg_clk = gd->vco_out / (1 << (2 * (dfbrg + 1)));
if (cp->b2c_mult > 0) {
gd->cpu_clk = (clkin * cp->b2c_mult) / 2;
} else {
gd->cpu_clk = clkin;
}
#ifdef CONFIG_PCI
gd->pci_clk = clkin;
if (sccr & SCCR_PCI_MODE) {
uint pci_div;
uint pcidf = (sccr & SCCR_PCIDF_MSK) >> SCCR_PCIDF_SHIFT;
if (sccr & SCCR_PCI_MODCK) {
pci_div = 2;
if (pcidf == 9) {
pci_div *= 5;
} else if (pcidf == 0xB) {
pci_div *= 6;
} else {
pci_div *= (pcidf + 1);
}
} else {
pci_div = pcidf + 1;
}
gd->pci_clk = (gd->cpm_clk * 2) / pci_div;
}
#endif
return (0);
}
int prt_8260_clks (void)
{
volatile immap_t *immap = (immap_t *) CONFIG_SYS_IMMR;
ulong sccr, dfbrg;
ulong scmr, corecnf, busdf, cpmdf, plldf, pllmf, pcidf;
corecnf_t *cp;
sccr = immap->im_clkrst.car_sccr;
dfbrg = (sccr & SCCR_DFBRG_MSK) >> SCCR_DFBRG_SHIFT;
scmr = immap->im_clkrst.car_scmr;
corecnf = (scmr & SCMR_CORECNF_MSK) >> SCMR_CORECNF_SHIFT;
busdf = (scmr & SCMR_BUSDF_MSK) >> SCMR_BUSDF_SHIFT;
cpmdf = (scmr & SCMR_CPMDF_MSK) >> SCMR_CPMDF_SHIFT;
plldf = (scmr & SCMR_PLLDF) ? 1 : 0;
pllmf = (scmr & SCMR_PLLMF_MSK) >> SCMR_PLLMF_SHIFT;
pcidf = (sccr & SCCR_PCIDF_MSK) >> SCCR_PCIDF_SHIFT;
cp = &corecnf_tab[corecnf];
puts (CPU_ID_STR " Clock Configuration\n - Bus-to-Core Mult ");
switch (cp->b2c_mult) {
case _byp:
puts ("BYPASS");
break;
case _off:
puts ("OFF");
break;
case _unk:
puts ("UNKNOWN");
break;
default:
printf ("%d%sx",
cp->b2c_mult / 2,
(cp->b2c_mult % 2) ? ".5" : "");
break;
}
printf (", VCO Div %d, 60x Bus Freq %s, Core Freq %s\n",
cp->vco_div, cp->freq_60x, cp->freq_core);
printf (" - dfbrg %ld, corecnf 0x%02lx, busdf %ld, cpmdf %ld, "
"plldf %ld, pllmf %ld, pcidf %ld\n",
dfbrg, corecnf, busdf, cpmdf,
plldf, pllmf, pcidf);
printf (" - vco_out %10ld, scc_clk %10ld, brg_clk %10ld\n",
gd->vco_out, gd->scc_clk, gd->brg_clk);
printf (" - cpu_clk %10ld, cpm_clk %10ld, bus_clk %10ld\n",
gd->cpu_clk, gd->cpm_clk, gd->bus_clk);
#ifdef CONFIG_PCI
printf (" - pci_clk %10ld\n", gd->pci_clk);
#endif
putc ('\n');
return (0);
}
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