mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-15 09:27:35 +00:00
a47a12becf
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>
156 lines
4 KiB
C
156 lines
4 KiB
C
/*
|
|
* (C) Copyright 2000-2009
|
|
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
|
|
*
|
|
* Copyright (C) 2004-2006 Freescale Semiconductor, Inc.
|
|
*
|
|
* 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
|
|
*
|
|
* Based on the MPC83xx code.
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <command.h>
|
|
#include <asm/io.h>
|
|
#include <asm/processor.h>
|
|
|
|
DECLARE_GLOBAL_DATA_PTR;
|
|
|
|
static int spmf_mult[] = {
|
|
68, 1, 12, 16,
|
|
20, 24, 28, 32,
|
|
36, 40, 44, 48,
|
|
52, 56, 60, 64
|
|
};
|
|
|
|
static int cpmf_mult[][2] = {
|
|
{0, 1}, {0, 1}, /* 0 and 1 are not valid */
|
|
{1, 1}, {3, 2},
|
|
{2, 1}, {5, 2},
|
|
{3, 1}, {7, 2},
|
|
{0, 1}, {0, 1}, /* and all above 7 are not valid too */
|
|
{0, 1}, {0, 1},
|
|
{0, 1}, {0, 1},
|
|
{0, 1}, {0, 1}
|
|
};
|
|
|
|
static int sys_dividors[][2] = {
|
|
{2, 1}, {5, 2}, {3, 1}, {7, 2}, {4, 1},
|
|
{9, 2}, {5, 1}, {7, 1}, {6, 1}, {8, 1},
|
|
{9, 1}, {11, 1}, {10, 1}, {12, 1}, {13, 1},
|
|
{15, 1}, {14, 1}, {16, 1}, {17, 1}, {19, 1},
|
|
{18, 1}, {20, 1}, {21, 1}, {23, 1}, {22, 1},
|
|
{24, 1}, {25, 1}, {27, 1}, {26, 1}, {28, 1},
|
|
{29, 1}, {31, 1}, {30, 1}, {32, 1}, {33, 1}
|
|
};
|
|
|
|
int get_clocks (void)
|
|
{
|
|
volatile immap_t *im = (immap_t *) CONFIG_SYS_IMMR;
|
|
u8 spmf;
|
|
u8 cpmf;
|
|
u8 sys_div;
|
|
u8 ips_div;
|
|
u8 pci_div;
|
|
u32 ref_clk = CONFIG_SYS_MPC512X_CLKIN;
|
|
u32 spll;
|
|
u32 sys_clk;
|
|
u32 core_clk;
|
|
u32 csb_clk;
|
|
u32 ips_clk;
|
|
u32 pci_clk;
|
|
u32 reg;
|
|
|
|
reg = in_be32(&im->sysconf.immrbar);
|
|
if ((reg & IMMRBAR_BASE_ADDR) != (u32) im)
|
|
return -1;
|
|
|
|
reg = in_be32(&im->clk.spmr);
|
|
spmf = (reg & SPMR_SPMF) >> SPMR_SPMF_SHIFT;
|
|
spll = ref_clk * spmf_mult[spmf];
|
|
|
|
reg = in_be32(&im->clk.scfr[1]);
|
|
sys_div = (reg & SCFR2_SYS_DIV) >> SCFR2_SYS_DIV_SHIFT;
|
|
sys_clk = (spll * sys_dividors[sys_div][1]) / sys_dividors[sys_div][0];
|
|
|
|
csb_clk = sys_clk / 2;
|
|
|
|
reg = in_be32(&im->clk.spmr);
|
|
cpmf = (reg & SPMR_CPMF) >> SPMR_CPMF_SHIFT;
|
|
core_clk = (csb_clk * cpmf_mult[cpmf][0]) / cpmf_mult[cpmf][1];
|
|
|
|
reg = in_be32(&im->clk.scfr[0]);
|
|
ips_div = (reg & SCFR1_IPS_DIV_MASK) >> SCFR1_IPS_DIV_SHIFT;
|
|
if (ips_div != 0) {
|
|
ips_clk = csb_clk / ips_div;
|
|
} else {
|
|
/* in case we cannot get a sane IPS divisor, fail gracefully */
|
|
ips_clk = 0;
|
|
}
|
|
|
|
reg = in_be32(&im->clk.scfr[0]);
|
|
pci_div = (reg & SCFR1_PCI_DIV_MASK) >> SCFR1_PCI_DIV_SHIFT;
|
|
if (pci_div != 0) {
|
|
pci_clk = csb_clk / pci_div;
|
|
} else {
|
|
/* in case we cannot get a sane IPS divisor, fail gracefully */
|
|
pci_clk = 333333;
|
|
}
|
|
|
|
gd->ips_clk = ips_clk;
|
|
gd->pci_clk = pci_clk;
|
|
gd->csb_clk = csb_clk;
|
|
gd->cpu_clk = core_clk;
|
|
gd->bus_clk = csb_clk;
|
|
return 0;
|
|
|
|
}
|
|
|
|
/********************************************
|
|
* get_bus_freq
|
|
* return system bus freq in Hz
|
|
*********************************************/
|
|
ulong get_bus_freq (ulong dummy)
|
|
{
|
|
return gd->csb_clk;
|
|
}
|
|
|
|
int do_clocks (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
|
|
{
|
|
char buf[32];
|
|
|
|
printf("Clock configuration:\n");
|
|
printf(" CPU: %-4s MHz\n", strmhz(buf, gd->cpu_clk));
|
|
printf(" Coherent System Bus: %-4s MHz\n", strmhz(buf, gd->csb_clk));
|
|
printf(" IPS Bus: %-4s MHz\n", strmhz(buf, gd->ips_clk));
|
|
printf(" PCI: %-4s MHz\n", strmhz(buf, gd->pci_clk));
|
|
printf(" DDR: %-4s MHz\n", strmhz(buf, 2*gd->csb_clk));
|
|
return 0;
|
|
}
|
|
|
|
U_BOOT_CMD(clocks, 1, 0, do_clocks,
|
|
"print clock configuration",
|
|
" clocks"
|
|
);
|
|
|
|
int prt_mpc512x_clks (void)
|
|
{
|
|
do_clocks (NULL, 0, 0, NULL);
|
|
return (0);
|
|
}
|