u-boot/arch/powerpc/cpu/mpc8260/cpu.c

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/*
* (C) Copyright 2000-2006
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* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
*
* SPDX-License-Identifier: GPL-2.0+
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*/
/*
* CPU specific code for the MPC825x / MPC826x / MPC827x / MPC828x
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*
* written or collected and sometimes rewritten by
* Magnus Damm <damm@bitsmart.com>
*
* modified by
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* Wolfgang Denk <wd@denx.de>
*
* modified for 8260 by
* Murray Jensen <Murray.Jensen@cmst.csiro.au>
*
* added 8260 masks by
* Marius Groeger <mag@sysgo.de>
*
* added HiP7 (824x/827x/8280) processors support by
* Yuli Barcohen <yuli@arabellasw.com>
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*/
#include <common.h>
#include <watchdog.h>
#include <command.h>
#include <mpc8260.h>
#include <netdev.h>
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#include <asm/processor.h>
#include <asm/cpm_8260.h>
#if defined(CONFIG_OF_LIBFDT)
#include <libfdt.h>
#include <fdt_support.h>
#endif
DECLARE_GLOBAL_DATA_PTR;
#if defined(CONFIG_GET_CPU_STR_F)
extern int get_cpu_str_f (char *buf);
#endif
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int checkcpu (void)
{
volatile immap_t *immap = (immap_t *) CONFIG_SYS_IMMR;
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ulong clock = gd->cpu_clk;
uint pvr = get_pvr ();
uint immr, rev, m, k;
char buf[32];
puts ("CPU: ");
switch (pvr) {
case PVR_8260:
case PVR_8260_HIP3:
k = 3;
break;
case PVR_8260_HIP4:
k = 4;
break;
case PVR_8260_HIP7R1:
case PVR_8260_HIP7RA:
case PVR_8260_HIP7:
k = 7;
break;
default:
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return -1; /* whoops! not an MPC8260 */
}
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rev = pvr & 0xff;
immr = immap->im_memctl.memc_immr;
if ((immr & IMMR_ISB_MSK) != CONFIG_SYS_IMMR)
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return -1; /* whoops! someone moved the IMMR */
#if defined(CONFIG_GET_CPU_STR_F)
get_cpu_str_f (buf);
printf ("%s (HiP%d Rev %02x, Mask ", buf, k, rev);
#else
printf (CPU_ID_STR " (HiP%d Rev %02x, Mask ", k, rev);
#endif
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/*
* the bottom 16 bits of the immr are the Part Number and Mask Number
* (4-34); the 16 bits at PROFF_REVNUM (0x8af0) in dual port ram is the
* RISC Microcode Revision Number (13-10).
* For the 8260, Motorola doesn't include the Microcode Revision
* in the mask.
*/
m = immr & (IMMR_PARTNUM_MSK | IMMR_MASKNUM_MSK);
k = immap->im_dprambase16[PROFF_REVNUM / sizeof(u16)];
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switch (m) {
case 0x0000:
puts ("0.2 2J24M");
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break;
case 0x0010:
puts ("A.0 K22A");
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break;
case 0x0011:
puts ("A.1 1K22A-XC");
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break;
case 0x0001:
puts ("B.1 1K23A");
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break;
case 0x0021:
puts ("B.2 2K23A-XC");
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break;
case 0x0023:
puts ("B.3 3K23A");
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break;
case 0x0024:
puts ("C.2 6K23A");
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break;
case 0x0060:
puts ("A.0(A) 2K25A");
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break;
case 0x0062:
puts ("B.1 4K25A");
break;
case 0x0064:
puts ("C.0 5K25A");
break;
case 0x0A00:
puts ("0.0 0K49M");
break;
case 0x0A01:
puts ("0.1 1K49M");
break;
case 0x0A10:
puts ("1.0 1K49M");
break;
case 0x0C00:
puts ("0.0 0K50M");
break;
case 0x0C10:
puts ("1.0 1K50M");
break;
case 0x0D00:
puts ("0.0 0K50M");
break;
case 0x0D10:
puts ("1.0 1K50M");
break;
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default:
printf ("unknown [immr=0x%04x,k=0x%04x]", m, k);
break;
}
printf (") at %s MHz\n", strmhz (buf, clock));
return 0;
}
/* ------------------------------------------------------------------------- */
/* configures a UPM by writing into the UPM RAM array */
/* uses bank 11 and a dummy physical address (=BRx_BA_MSK) */
/* NOTE: the physical address chosen must not overlap into any other area */
/* mapped by the memory controller because bank 11 has the lowest priority */
void upmconfig (uint upm, uint * table, uint size)
{
volatile immap_t *immap = (immap_t *) CONFIG_SYS_IMMR;
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volatile memctl8260_t *memctl = &immap->im_memctl;
volatile uchar *dummy = (uchar *) BRx_BA_MSK; /* set all BA bits */
uint i;
/* first set up bank 11 to reference the correct UPM at a dummy address */
memctl->memc_or11 = ORxU_AM_MSK; /* set all AM bits */
switch (upm) {
case UPMA:
memctl->memc_br11 =
((uint)dummy & BRx_BA_MSK) | BRx_PS_32 | BRx_MS_UPMA |
BRx_V;
memctl->memc_mamr = MxMR_OP_WARR;
break;
case UPMB:
memctl->memc_br11 =
((uint)dummy & BRx_BA_MSK) | BRx_PS_32 | BRx_MS_UPMB |
BRx_V;
memctl->memc_mbmr = MxMR_OP_WARR;
break;
case UPMC:
memctl->memc_br11 =
((uint)dummy & BRx_BA_MSK) | BRx_PS_32 | BRx_MS_UPMC |
BRx_V;
memctl->memc_mcmr = MxMR_OP_WARR;
break;
default:
panic ("upmconfig passed invalid UPM number (%u)\n", upm);
break;
}
/*
* at this point, the dummy address is set up to access the selected UPM,
* the MAD pointer is zero, and the MxMR OP is set for writing to RAM
*
* now we simply load the mdr with each word and poke the dummy address.
* the MAD is incremented on each access.
*/
for (i = 0; i < size; i++) {
memctl->memc_mdr = table[i];
*dummy = 0;
}
/* now kill bank 11 */
memctl->memc_br11 = 0;
}
/* ------------------------------------------------------------------------- */
#if !defined(CONFIG_HAVE_OWN_RESET)
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int
do_reset (cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
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{
ulong msr, addr;
volatile immap_t *immap = (immap_t *) CONFIG_SYS_IMMR;
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immap->im_clkrst.car_rmr = RMR_CSRE; /* Checkstop Reset enable */
/* Interrupts and MMU off */
__asm__ __volatile__ ("mfmsr %0":"=r" (msr):);
msr &= ~(MSR_ME | MSR_EE | MSR_IR | MSR_DR);
__asm__ __volatile__ ("mtmsr %0"::"r" (msr));
/*
* Trying to execute the next instruction at a non-existing address
* should cause a machine check, resulting in reset
*/
#ifdef CONFIG_SYS_RESET_ADDRESS
addr = CONFIG_SYS_RESET_ADDRESS;
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#else
/*
* note: when CONFIG_SYS_MONITOR_BASE points to a RAM address, CONFIG_SYS_MONITOR_BASE
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* - sizeof (ulong) is usually a valid address. Better pick an address
* known to be invalid on your system and assign it to CONFIG_SYS_RESET_ADDRESS.
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*/
addr = CONFIG_SYS_MONITOR_BASE - sizeof (ulong);
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#endif
((void (*)(void)) addr) ();
return 1;
}
#endif /* CONFIG_HAVE_OWN_RESET */
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/* ------------------------------------------------------------------------- */
/*
* Get timebase clock frequency (like cpu_clk in Hz)
*
*/
unsigned long get_tbclk (void)
{
ulong tbclk;
tbclk = (gd->bus_clk + 3L) / 4L;
return (tbclk);
}
/* ------------------------------------------------------------------------- */
#if defined(CONFIG_WATCHDOG)
void watchdog_reset (void)
{
int re_enable = disable_interrupts ();
reset_8260_watchdog ((immap_t *) CONFIG_SYS_IMMR);
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if (re_enable)
enable_interrupts ();
}
#endif /* CONFIG_WATCHDOG */
/* ------------------------------------------------------------------------- */
#ifdef CONFIG_OF_BOARD_SETUP
void ft_cpu_setup (void *blob, bd_t *bd)
{
#if defined(CONFIG_HAS_ETH0) || defined(CONFIG_HAS_ETH1) ||\
defined(CONFIG_HAS_ETH2) || defined(CONFIG_HAS_ETH3)
fdt_fixup_ethernet(blob);
#endif
do_fixup_by_compat_u32(blob, "fsl,cpm2-brg",
"clock-frequency", bd->bi_brgfreq, 1);
do_fixup_by_prop_u32(blob, "device_type", "cpu", 4,
"bus-frequency", bd->bi_busfreq, 1);
do_fixup_by_prop_u32(blob, "device_type", "cpu", 4,
"timebase-frequency", OF_TBCLK, 1);
do_fixup_by_prop_u32(blob, "device_type", "cpu", 4,
"clock-frequency", bd->bi_intfreq, 1);
fdt_fixup_memory(blob, (u64)bd->bi_memstart, (u64)bd->bi_memsize);
}
#endif /* CONFIG_OF_BOARD_SETUP */
/*
* Initializes on-chip ethernet controllers.
* to override, implement board_eth_init()
*/
int cpu_eth_init(bd_t *bis)
{
#if defined(CONFIG_ETHER_ON_FCC)
fec_initialize(bis);
#endif
#if defined(CONFIG_ETHER_ON_SCC)
mpc82xx_scc_enet_initialize(bis);
#endif
return 0;
}