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-rw-r--r--cpu/mpc8xx/cpu.c654
1 files changed, 0 insertions, 654 deletions
diff --git a/cpu/mpc8xx/cpu.c b/cpu/mpc8xx/cpu.c
deleted file mode 100644
index 2eb848b..0000000
--- a/cpu/mpc8xx/cpu.c
+++ /dev/null
@@ -1,654 +0,0 @@
-/*
- * (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
- */
-
-/*
- * m8xx.c
- *
- * CPU specific code
- *
- * written or collected and sometimes rewritten by
- * Magnus Damm <damm@bitsmart.com>
- *
- * minor modifications by
- * Wolfgang Denk <wd@denx.de>
- */
-
-#include <common.h>
-#include <watchdog.h>
-#include <command.h>
-#include <mpc8xx.h>
-#include <commproc.h>
-#include <netdev.h>
-#include <asm/cache.h>
-
-#if defined(CONFIG_OF_LIBFDT)
-#include <libfdt.h>
-#include <libfdt_env.h>
-#include <fdt_support.h>
-#endif
-
-DECLARE_GLOBAL_DATA_PTR;
-
-static char *cpu_warning = "\n " \
- "*** Warning: CPU Core has Silicon Bugs -- Check the Errata ***";
-
-#if ((defined(CONFIG_MPC86x) || defined(CONFIG_MPC855)) && \
- !defined(CONFIG_MPC862))
-
-static int check_CPU (long clock, uint pvr, uint immr)
-{
- char *id_str =
-# if defined(CONFIG_MPC855)
- "PC855";
-# elif defined(CONFIG_MPC860P)
- "PC860P";
-# else
- NULL;
-# endif
- volatile immap_t *immap = (immap_t *) (immr & 0xFFFF0000);
- uint k, m;
- char buf[32];
- char pre = 'X';
- char *mid = "xx";
- char *suf;
-
- /* the highest 16 bits should be 0x0050 for a 860 */
-
- if ((pvr >> 16) != 0x0050)
- return -1;
-
- k = (immr << 16) | *((ushort *) & immap->im_cpm.cp_dparam[0xB0]);
- m = 0;
- suf = "";
-
- /*
- * Some boards use sockets so different CPUs can be used.
- * We have to check chip version in run time.
- */
- switch (k) {
- case 0x00020001: pre = 'P'; break;
- case 0x00030001: break;
- case 0x00120003: suf = "A"; break;
- case 0x00130003: suf = "A3"; break;
-
- case 0x00200004: suf = "B"; break;
-
- case 0x00300004: suf = "C"; break;
- case 0x00310004: suf = "C1"; m = 1; break;
-
- case 0x00200064: mid = "SR"; suf = "B"; break;
- case 0x00300065: mid = "SR"; suf = "C"; break;
- case 0x00310065: mid = "SR"; suf = "C1"; m = 1; break;
- case 0x05010000: suf = "D3"; m = 1; break;
- case 0x05020000: suf = "D4"; m = 1; break;
- /* this value is not documented anywhere */
- case 0x40000000: pre = 'P'; suf = "D"; m = 1; break;
- /* MPC866P/MPC866T/MPC859T/MPC859DSL/MPC852T */
- case 0x08010004: /* Rev. A.0 */
- suf = "A";
- /* fall through */
- case 0x08000003: /* Rev. 0.3 */
- pre = 'M'; m = 1;
- if (id_str == NULL)
- id_str =
-# if defined(CONFIG_MPC852T)
- "PC852T";
-# elif defined(CONFIG_MPC859T)
- "PC859T";
-# elif defined(CONFIG_MPC859DSL)
- "PC859DSL";
-# elif defined(CONFIG_MPC866T)
- "PC866T";
-# else
- "PC866x"; /* Unknown chip from MPC866 family */
-# endif
- break;
- case 0x09000000: pre = 'M'; mid = suf = ""; m = 1;
- if (id_str == NULL)
- id_str = "PC885"; /* 870/875/880/885 */
- break;
-
- default: suf = NULL; break;
- }
-
- if (id_str == NULL)
- id_str = "PC86x"; /* Unknown 86x chip */
- if (suf)
- printf ("%c%s%sZPnn%s", pre, id_str, mid, suf);
- else
- printf ("unknown M%s (0x%08x)", id_str, k);
-
-
-#if defined(CONFIG_SYS_8xx_CPUCLK_MIN) && defined(CONFIG_SYS_8xx_CPUCLK_MAX)
- printf (" at %s MHz [%d.%d...%d.%d MHz]\n ",
- strmhz (buf, clock),
- CONFIG_SYS_8xx_CPUCLK_MIN / 1000000,
- ((CONFIG_SYS_8xx_CPUCLK_MIN % 1000000) + 50000) / 100000,
- CONFIG_SYS_8xx_CPUCLK_MAX / 1000000,
- ((CONFIG_SYS_8xx_CPUCLK_MAX % 1000000) + 50000) / 100000
- );
-#else
- printf (" at %s MHz: ", strmhz (buf, clock));
-#endif
- printf ("%u kB I-Cache %u kB D-Cache",
- checkicache () >> 10,
- checkdcache () >> 10
- );
-
- /* do we have a FEC (860T/P or 852/859/866/885)? */
-
- immap->im_cpm.cp_fec.fec_addr_low = 0x12345678;
- if (immap->im_cpm.cp_fec.fec_addr_low == 0x12345678) {
- printf (" FEC present");
- }
-
- if (!m) {
- puts (cpu_warning);
- }
-
- putc ('\n');
-
-#ifdef DEBUG
- if(clock != measure_gclk()) {
- printf ("clock %ldHz != %dHz\n", clock, measure_gclk());
- }
-#endif
-
- return 0;
-}
-
-#elif defined(CONFIG_MPC862)
-
-static int check_CPU (long clock, uint pvr, uint immr)
-{
- volatile immap_t *immap = (immap_t *) (immr & 0xFFFF0000);
- uint k, m;
- char buf[32];
- char pre = 'X';
- char *mid = "xx";
- char *suf;
-
- /* the highest 16 bits should be 0x0050 for a 8xx */
-
- if ((pvr >> 16) != 0x0050)
- return -1;
-
- k = (immr << 16) | *((ushort *) & immap->im_cpm.cp_dparam[0xB0]);
- m = 0;
-
- switch (k) {
-
- /* this value is not documented anywhere */
- case 0x06000000: mid = "P"; suf = "0"; break;
- case 0x06010001: mid = "P"; suf = "A"; m = 1; break;
- case 0x07000003: mid = "P"; suf = "B"; m = 1; break;
- default: suf = NULL; break;
- }
-
-#ifndef CONFIG_MPC857
- if (suf)
- printf ("%cPC862%sZPnn%s", pre, mid, suf);
- else
- printf ("unknown MPC862 (0x%08x)", k);
-#else
- if (suf)
- printf ("%cPC857TZPnn%s", pre, suf); /* only 857T tested right now! */
- else
- printf ("unknown MPC857 (0x%08x)", k);
-#endif
-
- printf (" at %s MHz:", strmhz (buf, clock));
-
- printf (" %u kB I-Cache", checkicache () >> 10);
- printf (" %u kB D-Cache", checkdcache () >> 10);
-
- /* lets check and see if we're running on a 862T (or P?) */
-
- immap->im_cpm.cp_fec.fec_addr_low = 0x12345678;
- if (immap->im_cpm.cp_fec.fec_addr_low == 0x12345678) {
- printf (" FEC present");
- }
-
- if (!m) {
- puts (cpu_warning);
- }
-
- putc ('\n');
-
- return 0;
-}
-
-#elif defined(CONFIG_MPC823)
-
-static int check_CPU (long clock, uint pvr, uint immr)
-{
- volatile immap_t *immap = (immap_t *) (immr & 0xFFFF0000);
- uint k, m;
- char buf[32];
- char *suf;
-
- /* the highest 16 bits should be 0x0050 for a 8xx */
-
- if ((pvr >> 16) != 0x0050)
- return -1;
-
- k = (immr << 16) | *((ushort *) & immap->im_cpm.cp_dparam[0xB0]);
- m = 0;
-
- switch (k) {
- /* MPC823 */
- case 0x20000000: suf = "0"; break;
- case 0x20010000: suf = "0.1"; break;
- case 0x20020000: suf = "Z2/3"; break;
- case 0x20020001: suf = "Z3"; break;
- case 0x21000000: suf = "A"; break;
- case 0x21010000: suf = "B"; m = 1; break;
- case 0x21010001: suf = "B2"; m = 1; break;
- /* MPC823E */
- case 0x24010000: suf = NULL;
- puts ("PPC823EZTnnB2");
- m = 1;
- break;
- default:
- suf = NULL;
- printf ("unknown MPC823 (0x%08x)", k);
- break;
- }
- if (suf)
- printf ("PPC823ZTnn%s", suf);
-
- printf (" at %s MHz:", strmhz (buf, clock));
-
- printf (" %u kB I-Cache", checkicache () >> 10);
- printf (" %u kB D-Cache", checkdcache () >> 10);
-
- /* lets check and see if we're running on a 860T (or P?) */
-
- immap->im_cpm.cp_fec.fec_addr_low = 0x12345678;
- if (immap->im_cpm.cp_fec.fec_addr_low == 0x12345678) {
- puts (" FEC present");
- }
-
- if (!m) {
- puts (cpu_warning);
- }
-
- putc ('\n');
-
- return 0;
-}
-
-#elif defined(CONFIG_MPC850)
-
-static int check_CPU (long clock, uint pvr, uint immr)
-{
- volatile immap_t *immap = (immap_t *) (immr & 0xFFFF0000);
- uint k, m;
- char buf[32];
-
- /* the highest 16 bits should be 0x0050 for a 8xx */
-
- if ((pvr >> 16) != 0x0050)
- return -1;
-
- k = (immr << 16) | *((ushort *) & immap->im_cpm.cp_dparam[0xB0]);
- m = 0;
-
- switch (k) {
- case 0x20020001:
- printf ("XPC850xxZT");
- break;
- case 0x21000065:
- printf ("XPC850xxZTA");
- break;
- case 0x21010067:
- printf ("XPC850xxZTB");
- m = 1;
- break;
- case 0x21020068:
- printf ("XPC850xxZTC");
- m = 1;
- break;
- default:
- printf ("unknown MPC850 (0x%08x)", k);
- }
- printf (" at %s MHz:", strmhz (buf, clock));
-
- printf (" %u kB I-Cache", checkicache () >> 10);
- printf (" %u kB D-Cache", checkdcache () >> 10);
-
- /* lets check and see if we're running on a 850T (or P?) */
-
- immap->im_cpm.cp_fec.fec_addr_low = 0x12345678;
- if (immap->im_cpm.cp_fec.fec_addr_low == 0x12345678) {
- printf (" FEC present");
- }
-
- if (!m) {
- puts (cpu_warning);
- }
-
- putc ('\n');
-
- return 0;
-}
-#else
-#error CPU undefined
-#endif
-/* ------------------------------------------------------------------------- */
-
-int checkcpu (void)
-{
- ulong clock = gd->cpu_clk;
- uint immr = get_immr (0); /* Return full IMMR contents */
- uint pvr = get_pvr ();
-
- puts ("CPU: ");
-
- /* 850 has PARTNUM 20 */
- /* 801 has PARTNUM 10 */
- return check_CPU (clock, pvr, immr);
-}
-
-/* ------------------------------------------------------------------------- */
-/* L1 i-cache */
-/* the standard 860 has 128 sets of 16 bytes in 2 ways (= 4 kB) */
-/* the 860 P (plus) has 256 sets of 16 bytes in 4 ways (= 16 kB) */
-
-int checkicache (void)
-{
- volatile immap_t *immap = (immap_t *) CONFIG_SYS_IMMR;
- volatile memctl8xx_t *memctl = &immap->im_memctl;
- u32 cacheon = rd_ic_cst () & IDC_ENABLED;
-
-#ifdef CONFIG_IP86x
- u32 k = memctl->memc_br1 & ~0x00007fff; /* probe in flash memoryarea */
-#else
- u32 k = memctl->memc_br0 & ~0x00007fff; /* probe in flash memoryarea */
-#endif
- u32 m;
- u32 lines = -1;
-
- wr_ic_cst (IDC_UNALL);
- wr_ic_cst (IDC_INVALL);
- wr_ic_cst (IDC_DISABLE);
- __asm__ volatile ("isync");
-
- while (!((m = rd_ic_cst ()) & IDC_CERR2)) {
- wr_ic_adr (k);
- wr_ic_cst (IDC_LDLCK);
- __asm__ volatile ("isync");
-
- lines++;
- k += 0x10; /* the number of bytes in a cacheline */
- }
-
- wr_ic_cst (IDC_UNALL);
- wr_ic_cst (IDC_INVALL);
-
- if (cacheon)
- wr_ic_cst (IDC_ENABLE);
- else
- wr_ic_cst (IDC_DISABLE);
-
- __asm__ volatile ("isync");
-
- return lines << 4;
-};
-
-/* ------------------------------------------------------------------------- */
-/* L1 d-cache */
-/* the standard 860 has 128 sets of 16 bytes in 2 ways (= 4 kB) */
-/* the 860 P (plus) has 256 sets of 16 bytes in 2 ways (= 8 kB) */
-/* call with cache disabled */
-
-int checkdcache (void)
-{
- volatile immap_t *immap = (immap_t *) CONFIG_SYS_IMMR;
- volatile memctl8xx_t *memctl = &immap->im_memctl;
- u32 cacheon = rd_dc_cst () & IDC_ENABLED;
-
-#ifdef CONFIG_IP86x
- u32 k = memctl->memc_br1 & ~0x00007fff; /* probe in flash memoryarea */
-#else
- u32 k = memctl->memc_br0 & ~0x00007fff; /* probe in flash memoryarea */
-#endif
- u32 m;
- u32 lines = -1;
-
- wr_dc_cst (IDC_UNALL);
- wr_dc_cst (IDC_INVALL);
- wr_dc_cst (IDC_DISABLE);
-
- while (!((m = rd_dc_cst ()) & IDC_CERR2)) {
- wr_dc_adr (k);
- wr_dc_cst (IDC_LDLCK);
- lines++;
- k += 0x10; /* the number of bytes in a cacheline */
- }
-
- wr_dc_cst (IDC_UNALL);
- wr_dc_cst (IDC_INVALL);
-
- if (cacheon)
- wr_dc_cst (IDC_ENABLE);
- else
- wr_dc_cst (IDC_DISABLE);
-
- return lines << 4;
-};
-
-/* ------------------------------------------------------------------------- */
-
-void upmconfig (uint upm, uint * table, uint size)
-{
- uint i;
- uint addr = 0;
- volatile immap_t *immap = (immap_t *) CONFIG_SYS_IMMR;
- volatile memctl8xx_t *memctl = &immap->im_memctl;
-
- for (i = 0; i < size; i++) {
- memctl->memc_mdr = table[i]; /* (16-15) */
- memctl->memc_mcr = addr | upm; /* (16-16) */
- addr++;
- }
-}
-
-/* ------------------------------------------------------------------------- */
-
-#ifndef CONFIG_LWMON
-
-int do_reset (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
-{
- ulong msr, addr;
-
- volatile immap_t *immap = (immap_t *) CONFIG_SYS_IMMR;
-
- immap->im_clkrst.car_plprcr |= PLPRCR_CSR; /* Checkstop Reset enable */
-
- /* Interrupts and MMU off */
- __asm__ volatile ("mtspr 81, 0");
- __asm__ volatile ("mfmsr %0":"=r" (msr));
-
- msr &= ~0x1030;
- __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;
-#else
- /*
- * note: when CONFIG_SYS_MONITOR_BASE points to a RAM address, CONFIG_SYS_MONITOR_BASE
- * - 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.
- * "(ulong)-1" used to be a good choice for many systems...
- */
- addr = CONFIG_SYS_MONITOR_BASE - sizeof (ulong);
-#endif
- ((void (*)(void)) addr) ();
- return 1;
-}
-
-#else /* CONFIG_LWMON */
-
-/*
- * On the LWMON board, the MCLR reset input of the PIC's on the board
- * uses a 47K/1n RC combination which has a 47us time constant. The
- * low signal on the HRESET pin of the CPU is only 512 clocks = 8 us
- * and thus too short to reset the external hardware. So we use the
- * watchdog to reset the board.
- */
-int do_reset (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
-{
- /* prevent triggering the watchdog */
- disable_interrupts ();
-
- /* make sure the watchdog is running */
- reset_8xx_watchdog ((immap_t *) CONFIG_SYS_IMMR);
-
- /* wait for watchdog reset */
- while (1) {};
-
- /* NOTREACHED */
- return 1;
-}
-
-#endif /* CONFIG_LWMON */
-
-/* ------------------------------------------------------------------------- */
-
-/*
- * Get timebase clock frequency (like cpu_clk in Hz)
- *
- * See sections 14.2 and 14.6 of the User's Manual
- */
-unsigned long get_tbclk (void)
-{
- uint immr = get_immr (0); /* Return full IMMR contents */
- volatile immap_t *immap = (volatile immap_t *)(immr & 0xFFFF0000);
- ulong oscclk, factor, pll;
-
- if (immap->im_clkrst.car_sccr & SCCR_TBS) {
- return (gd->cpu_clk / 16);
- }
-
- pll = immap->im_clkrst.car_plprcr;
-
-#define PLPRCR_val(a) ((pll & PLPRCR_ ## a ## _MSK) >> PLPRCR_ ## a ## _SHIFT)
-
- /*
- * For newer PQ1 chips (MPC866/87x/88x families), PLL multiplication
- * factor is calculated as follows:
- *
- * MFN
- * MFI + -------
- * MFD + 1
- * factor = -----------------
- * (PDF + 1) * 2^S
- *
- * For older chips, it's just MF field of PLPRCR plus one.
- */
- if ((immr & 0x0FFF) >= MPC8xx_NEW_CLK) { /* MPC866/87x/88x series */
- factor = (PLPRCR_val(MFI) + PLPRCR_val(MFN)/(PLPRCR_val(MFD)+1))/
- (PLPRCR_val(PDF)+1) / (1<<PLPRCR_val(S));
- } else {
- factor = PLPRCR_val(MF)+1;
- }
-
- oscclk = gd->cpu_clk / factor;
-
- if ((immap->im_clkrst.car_sccr & SCCR_RTSEL) == 0 || factor > 2) {
- return (oscclk / 4);
- }
- return (oscclk / 16);
-}
-
-/* ------------------------------------------------------------------------- */
-
-#if defined(CONFIG_WATCHDOG)
-void watchdog_reset (void)
-{
- int re_enable = disable_interrupts ();
-
- reset_8xx_watchdog ((immap_t *) CONFIG_SYS_IMMR);
- if (re_enable)
- enable_interrupts ();
-}
-#endif /* CONFIG_WATCHDOG */
-
-#if defined(CONFIG_WATCHDOG) || defined(CONFIG_LWMON)
-
-void reset_8xx_watchdog (volatile immap_t * immr)
-{
-# if defined(CONFIG_LWMON)
- /*
- * The LWMON board uses a MAX6301 Watchdog
- * with the trigger pin connected to port PA.7
- *
- * (The old board version used a MAX706TESA Watchdog, which
- * had to be handled exactly the same.)
- */
-# define WATCHDOG_BIT 0x0100
- immr->im_ioport.iop_papar &= ~(WATCHDOG_BIT); /* GPIO */
- immr->im_ioport.iop_padir |= WATCHDOG_BIT; /* Output */
- immr->im_ioport.iop_paodr &= ~(WATCHDOG_BIT); /* active output */
-
- immr->im_ioport.iop_padat ^= WATCHDOG_BIT; /* Toggle WDI */
-# elif defined(CONFIG_KUP4K) || defined(CONFIG_KUP4X)
- /*
- * The KUP4 boards uses a TPS3705 Watchdog
- * with the trigger pin connected to port PA.5
- */
-# define WATCHDOG_BIT 0x0400
- immr->im_ioport.iop_papar &= ~(WATCHDOG_BIT); /* GPIO */
- immr->im_ioport.iop_padir |= WATCHDOG_BIT; /* Output */
- immr->im_ioport.iop_paodr &= ~(WATCHDOG_BIT); /* active output */
-
- immr->im_ioport.iop_padat ^= WATCHDOG_BIT; /* Toggle WDI */
-# else
- /*
- * All other boards use the MPC8xx Internal Watchdog
- */
- immr->im_siu_conf.sc_swsr = 0x556c; /* write magic1 */
- immr->im_siu_conf.sc_swsr = 0xaa39; /* write magic2 */
-# endif /* CONFIG_LWMON */
-}
-#endif /* CONFIG_WATCHDOG */
-
-/*
- * Initializes on-chip ethernet controllers.
- * to override, implement board_eth_init()
- */
-int cpu_eth_init(bd_t *bis)
-{
-#if defined(SCC_ENET) && defined(CONFIG_CMD_NET)
- scc_initialize(bis);
-#endif
-#if defined(FEC_ENET)
- fec_initialize(bis);
-#endif
- return 0;
-}
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