diff options
Diffstat (limited to 'cpu/mpc8xx/cpu.c')
| -rw-r--r-- | cpu/mpc8xx/cpu.c | 54 |
1 files changed, 43 insertions, 11 deletions
diff --git a/cpu/mpc8xx/cpu.c b/cpu/mpc8xx/cpu.c index 4e23228..b95e06f 100644 --- a/cpu/mpc8xx/cpu.c +++ b/cpu/mpc8xx/cpu.c @@ -42,12 +42,23 @@ static char *cpu_warning = "\n " \ "*** Warning: CPU Core has Silicon Bugs -- Check the Errata ***"; -#if ((defined(CONFIG_MPC860) || defined(CONFIG_MPC855)) && \ +#if ((defined(CONFIG_MPC86x) || defined(CONFIG_MPC855)) && \ !defined(CONFIG_MPC862)) -# ifdef CONFIG_MPC855 + +# if defined(CONFIG_MPC855) # define ID_STR "PC855" +# elif defined(CONFIG_MPC852T) +# define ID_STR "PC852T" +# elif defined(CONFIG_MPC859T) +# define ID_STR "PC859T" +# elif defined(CONFIG_MPC859DSL) +# define ID_STR "PC859DSL" +# elif defined(CONFIG_MPC860P) +# define ID_STR "PC860P" +# elif defined(CONFIG_MPC866T) +# define ID_STR "PC866T" # else -# define ID_STR "PC860" +# define ID_STR "PC86x" /* unknown 86x chip */ # endif static int check_CPU (long clock, uint pvr, uint immr) @@ -68,6 +79,10 @@ static int check_CPU (long clock, uint pvr, uint immr) m = 0; switch (k) { +#ifdef CONFIG_MPC866_et_al + /* MPC866P/MPC866T/MPC859T/MPC859DSL/MPC852T */ + case 0x08000003: pre = 'M'; suf = ""; m = 1; break; +#else case 0x00020001: pre = 'p'; suf = ""; break; case 0x00030001: suf = ""; break; case 0x00120003: suf = "A"; break; @@ -76,17 +91,16 @@ static int check_CPU (long clock, uint pvr, uint immr) case 0x00200004: suf = "B"; break; case 0x00300004: suf = "C"; break; - case 0x00310004: suf = "C1"; m = 1; - 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; +#endif default: suf = NULL; break; } @@ -101,7 +115,7 @@ static int check_CPU (long clock, uint pvr, uint immr) 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?) */ + /* do we have a FEC (860T/P or 852/859/866)? */ immap->im_cpm.cp_fec.fec_addr_low = 0x12345678; if (immap->im_cpm.cp_fec.fec_addr_low == 0x12345678) { @@ -114,6 +128,12 @@ static int check_CPU (long clock, uint pvr, uint immr) putc ('\n'); +#ifdef DEBUG + if(clock != measure_gclk()) { + printf ("clock %ldHz != %dHz\n", clock, measure_gclk()); + } +#endif + return 0; } @@ -316,7 +336,7 @@ int checkicache (void) volatile memctl8xx_t *memctl = &immap->im_memctl; u32 cacheon = rd_ic_cst () & IDC_ENABLED; -#ifdef CONFIG_IP860 +#ifdef CONFIG_IP86x u32 k = memctl->memc_br1 & ~0x00007fff; /* probe in flash memoryarea */ #else u32 k = memctl->memc_br0 & ~0x00007fff; /* probe in flash memoryarea */ @@ -363,7 +383,7 @@ int checkdcache (void) volatile memctl8xx_t *memctl = &immap->im_memctl; u32 cacheon = rd_dc_cst () & IDC_ENABLED; -#ifdef CONFIG_IP860 +#ifdef CONFIG_IP86x u32 k = memctl->memc_br1 & ~0x00007fff; /* probe in flash memoryarea */ #else u32 k = memctl->memc_br0 & ~0x00007fff; /* probe in flash memoryarea */ @@ -462,8 +482,20 @@ unsigned long get_tbclk (void) if (immr->im_clkrst.car_sccr & SCCR_TBS) { return (gd->cpu_clk / 16); } - - factor = (((CFG_PLPRCR) & PLPRCR_MF_MSK) >> PLPRCR_MF_SHIFT) + 1; +#define PLPRCR_val(a) (((CFG_PLPRCR) & PLPRCR_ ## a ## _MSK) >> PLPRCR_ ## a ## _SHIFT) +#ifdef CONFIG_MPC866_et_al + /* MFN + MFI + ------- + MFD + 1 + factor = ----------------- + (PDF + 1) * 2^S + */ + + 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; +#endif oscclk = gd->cpu_clk / factor; |