u-boot/cpu/mpc85xx/fdt.c
Peter Tyser 5ccd29c367 85xx: MP Boot Page Translation update
This change has 3 goals:
- Have secondary cores be released into spin loops at their 'true'
  address in SDRAM.  Previously, secondary cores were put into spin
  loops in the 0xfffffxxx address range which required that boot page
  translation was always enabled while cores were in their spin loops.

- Allow the TLB window that the primary core uses to access the
  secondary cores boot page to be placed at any address.  Previously, a
  TLB window at 0xfffff000 was always used to access the seconary cores'
  boot page.  This TLB address requirement overlapped with other
  peripherals on some boards (eg XPedite5370).  By default, the boot
  page TLB will still use the 0xfffffxxx address range, but this can be
  overridden on a board-by-board basis by defining a custom
  CONFIG_BPTR_VIRT_ADDR.  Note that the TLB used to map the boot page
  remains in use while U-Boot executes.  Previously it was only
  temporarily used, then restored to its initial value.

- Allow Boot Page Translation to be disabled on bootup.  Previously,
  Boot Page Translation was always left enabled after secondary cores
  were brought out of reset.  This caused the 0xfffffxxx address range
  to somewhat "magically" be translated to an address in SDRAM.  Some
  boards may not want this oddity in their memory map, so defining
  CONFIG_MPC8xxx_DISABLE_BPTR will turn off Boot Page Translation after
  the secondary cores are initialized.

These changes are only applicable to 85xx boards with CONFIG_MP defined.

Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2009-10-27 09:34:57 -05:00

345 lines
9.1 KiB
C

/*
* Copyright 2007-2009 Freescale Semiconductor, Inc.
*
* (C) Copyright 2000
* 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 <libfdt.h>
#include <fdt_support.h>
#include <asm/processor.h>
#include <linux/ctype.h>
#ifdef CONFIG_FSL_ESDHC
#include <fsl_esdhc.h>
#endif
DECLARE_GLOBAL_DATA_PTR;
extern void ft_qe_setup(void *blob);
extern void ft_fixup_num_cores(void *blob);
#ifdef CONFIG_MP
#include "mp.h"
void ft_fixup_cpu(void *blob, u64 memory_limit)
{
int off;
ulong spin_tbl_addr = get_spin_phys_addr();
u32 bootpg = determine_mp_bootpg();
u32 id = get_my_id();
off = fdt_node_offset_by_prop_value(blob, -1, "device_type", "cpu", 4);
while (off != -FDT_ERR_NOTFOUND) {
u32 *reg = (u32 *)fdt_getprop(blob, off, "reg", 0);
if (reg) {
if (*reg == id) {
fdt_setprop_string(blob, off, "status", "okay");
} else {
u64 val = *reg * SIZE_BOOT_ENTRY + spin_tbl_addr;
val = cpu_to_fdt32(val);
fdt_setprop_string(blob, off, "status",
"disabled");
fdt_setprop_string(blob, off, "enable-method",
"spin-table");
fdt_setprop(blob, off, "cpu-release-addr",
&val, sizeof(val));
}
} else {
printf ("cpu NULL\n");
}
off = fdt_node_offset_by_prop_value(blob, off,
"device_type", "cpu", 4);
}
/* Reserve the boot page so OSes dont use it */
if ((u64)bootpg < memory_limit) {
off = fdt_add_mem_rsv(blob, bootpg, (u64)4096);
if (off < 0)
printf("%s: %s\n", __FUNCTION__, fdt_strerror(off));
}
}
#endif
#define ft_fixup_l3cache(x, y)
#if defined(CONFIG_L2_CACHE)
/* return size in kilobytes */
static inline u32 l2cache_size(void)
{
volatile ccsr_l2cache_t *l2cache = (void *)CONFIG_SYS_MPC85xx_L2_ADDR;
volatile u32 l2siz_field = (l2cache->l2ctl >> 28) & 0x3;
u32 ver = SVR_SOC_VER(get_svr());
switch (l2siz_field) {
case 0x0:
break;
case 0x1:
if (ver == SVR_8540 || ver == SVR_8560 ||
ver == SVR_8541 || ver == SVR_8541_E ||
ver == SVR_8555 || ver == SVR_8555_E)
return 128;
else
return 256;
break;
case 0x2:
if (ver == SVR_8540 || ver == SVR_8560 ||
ver == SVR_8541 || ver == SVR_8541_E ||
ver == SVR_8555 || ver == SVR_8555_E)
return 256;
else
return 512;
break;
case 0x3:
return 1024;
break;
}
return 0;
}
static inline void ft_fixup_l2cache(void *blob)
{
int len, off;
u32 *ph;
struct cpu_type *cpu = identify_cpu(SVR_SOC_VER(get_svr()));
char compat_buf[38];
const u32 line_size = 32;
const u32 num_ways = 8;
const u32 size = l2cache_size() * 1024;
const u32 num_sets = size / (line_size * num_ways);
off = fdt_node_offset_by_prop_value(blob, -1, "device_type", "cpu", 4);
if (off < 0) {
debug("no cpu node fount\n");
return;
}
ph = (u32 *)fdt_getprop(blob, off, "next-level-cache", 0);
if (ph == NULL) {
debug("no next-level-cache property\n");
return ;
}
off = fdt_node_offset_by_phandle(blob, *ph);
if (off < 0) {
printf("%s: %s\n", __func__, fdt_strerror(off));
return ;
}
if (cpu) {
if (isdigit(cpu->name[0]))
len = sprintf(compat_buf,
"fsl,mpc%s-l2-cache-controller", cpu->name);
else
len = sprintf(compat_buf,
"fsl,%c%s-l2-cache-controller",
tolower(cpu->name[0]), cpu->name + 1);
sprintf(&compat_buf[len + 1], "cache");
}
fdt_setprop(blob, off, "cache-unified", NULL, 0);
fdt_setprop_cell(blob, off, "cache-block-size", line_size);
fdt_setprop_cell(blob, off, "cache-size", size);
fdt_setprop_cell(blob, off, "cache-sets", num_sets);
fdt_setprop_cell(blob, off, "cache-level", 2);
fdt_setprop(blob, off, "compatible", compat_buf, sizeof(compat_buf));
/* we dont bother w/L3 since no platform of this type has one */
}
#elif defined(CONFIG_BACKSIDE_L2_CACHE)
static inline void ft_fixup_l2cache(void *blob)
{
int off, l2_off, l3_off = -1;
u32 *ph;
u32 l2cfg0 = mfspr(SPRN_L2CFG0);
u32 size, line_size, num_ways, num_sets;
size = (l2cfg0 & 0x3fff) * 64 * 1024;
num_ways = ((l2cfg0 >> 14) & 0x1f) + 1;
line_size = (((l2cfg0 >> 23) & 0x3) + 1) * 32;
num_sets = size / (line_size * num_ways);
off = fdt_node_offset_by_prop_value(blob, -1, "device_type", "cpu", 4);
while (off != -FDT_ERR_NOTFOUND) {
ph = (u32 *)fdt_getprop(blob, off, "next-level-cache", 0);
if (ph == NULL) {
debug("no next-level-cache property\n");
goto next;
}
l2_off = fdt_node_offset_by_phandle(blob, *ph);
if (l2_off < 0) {
printf("%s: %s\n", __func__, fdt_strerror(off));
goto next;
}
fdt_setprop(blob, l2_off, "cache-unified", NULL, 0);
fdt_setprop_cell(blob, l2_off, "cache-block-size", line_size);
fdt_setprop_cell(blob, l2_off, "cache-size", size);
fdt_setprop_cell(blob, l2_off, "cache-sets", num_sets);
fdt_setprop_cell(blob, l2_off, "cache-level", 2);
fdt_setprop(blob, l2_off, "compatible", "cache", 6);
if (l3_off < 0) {
ph = (u32 *)fdt_getprop(blob, l2_off, "next-level-cache", 0);
if (ph == NULL) {
debug("no next-level-cache property\n");
goto next;
}
l3_off = *ph;
}
next:
off = fdt_node_offset_by_prop_value(blob, off,
"device_type", "cpu", 4);
}
if (l3_off > 0) {
l3_off = fdt_node_offset_by_phandle(blob, l3_off);
if (l3_off < 0) {
printf("%s: %s\n", __func__, fdt_strerror(off));
return ;
}
ft_fixup_l3cache(blob, l3_off);
}
}
#else
#define ft_fixup_l2cache(x)
#endif
static inline void ft_fixup_cache(void *blob)
{
int off;
off = fdt_node_offset_by_prop_value(blob, -1, "device_type", "cpu", 4);
while (off != -FDT_ERR_NOTFOUND) {
u32 l1cfg0 = mfspr(SPRN_L1CFG0);
u32 l1cfg1 = mfspr(SPRN_L1CFG1);
u32 isize, iline_size, inum_sets, inum_ways;
u32 dsize, dline_size, dnum_sets, dnum_ways;
/* d-side config */
dsize = (l1cfg0 & 0x7ff) * 1024;
dnum_ways = ((l1cfg0 >> 11) & 0xff) + 1;
dline_size = (((l1cfg0 >> 23) & 0x3) + 1) * 32;
dnum_sets = dsize / (dline_size * dnum_ways);
fdt_setprop_cell(blob, off, "d-cache-block-size", dline_size);
fdt_setprop_cell(blob, off, "d-cache-size", dsize);
fdt_setprop_cell(blob, off, "d-cache-sets", dnum_sets);
/* i-side config */
isize = (l1cfg1 & 0x7ff) * 1024;
inum_ways = ((l1cfg1 >> 11) & 0xff) + 1;
iline_size = (((l1cfg1 >> 23) & 0x3) + 1) * 32;
inum_sets = isize / (iline_size * inum_ways);
fdt_setprop_cell(blob, off, "i-cache-block-size", iline_size);
fdt_setprop_cell(blob, off, "i-cache-size", isize);
fdt_setprop_cell(blob, off, "i-cache-sets", inum_sets);
off = fdt_node_offset_by_prop_value(blob, off,
"device_type", "cpu", 4);
}
ft_fixup_l2cache(blob);
}
void fdt_add_enet_stashing(void *fdt)
{
do_fixup_by_compat(fdt, "gianfar", "bd-stash", NULL, 0, 1);
do_fixup_by_compat_u32(fdt, "gianfar", "rx-stash-len", 96, 1);
do_fixup_by_compat_u32(fdt, "gianfar", "rx-stash-idx", 0, 1);
}
void ft_cpu_setup(void *blob, bd_t *bd)
{
int off;
int val;
sys_info_t sysinfo;
/* delete crypto node if not on an E-processor */
if (!IS_E_PROCESSOR(get_svr()))
fdt_fixup_crypto_node(blob, 0);
fdt_fixup_ethernet(blob);
fdt_add_enet_stashing(blob);
do_fixup_by_prop_u32(blob, "device_type", "cpu", 4,
"timebase-frequency", get_tbclk(), 1);
do_fixup_by_prop_u32(blob, "device_type", "cpu", 4,
"bus-frequency", bd->bi_busfreq, 1);
get_sys_info(&sysinfo);
off = fdt_node_offset_by_prop_value(blob, -1, "device_type", "cpu", 4);
while (off != -FDT_ERR_NOTFOUND) {
u32 *reg = (u32 *)fdt_getprop(blob, off, "reg", 0);
val = cpu_to_fdt32(sysinfo.freqProcessor[*reg]);
fdt_setprop(blob, off, "clock-frequency", &val, 4);
off = fdt_node_offset_by_prop_value(blob, off, "device_type",
"cpu", 4);
}
do_fixup_by_prop_u32(blob, "device_type", "soc", 4,
"bus-frequency", bd->bi_busfreq, 1);
do_fixup_by_compat_u32(blob, "fsl,pq3-localbus",
"bus-frequency", gd->lbc_clk, 1);
do_fixup_by_compat_u32(blob, "fsl,elbc",
"bus-frequency", gd->lbc_clk, 1);
#ifdef CONFIG_QE
ft_qe_setup(blob);
#endif
#ifdef CONFIG_SYS_NS16550
do_fixup_by_compat_u32(blob, "ns16550",
"clock-frequency", CONFIG_SYS_NS16550_CLK, 1);
#endif
#ifdef CONFIG_CPM2
do_fixup_by_compat_u32(blob, "fsl,cpm2-scc-uart",
"current-speed", bd->bi_baudrate, 1);
do_fixup_by_compat_u32(blob, "fsl,cpm2-brg",
"clock-frequency", bd->bi_brgfreq, 1);
#endif
fdt_fixup_memory(blob, (u64)bd->bi_memstart, (u64)bd->bi_memsize);
#ifdef CONFIG_MP
ft_fixup_cpu(blob, (u64)bd->bi_memstart + (u64)bd->bi_memsize);
#endif
ft_fixup_num_cores(blob);
ft_fixup_cache(blob);
#if defined(CONFIG_FSL_ESDHC)
fdt_fixup_esdhc(blob, bd);
#endif
}