diff options
Diffstat (limited to 'cpu/74xx_7xx')
| -rw-r--r-- | cpu/74xx_7xx/cpu.c | 46 | ||||
| -rw-r--r-- | cpu/74xx_7xx/cpu_init.c | 1 | ||||
| -rw-r--r-- | cpu/74xx_7xx/speed.c | 56 |
3 files changed, 94 insertions, 9 deletions
diff --git a/cpu/74xx_7xx/cpu.c b/cpu/74xx_7xx/cpu.c index f4e5fc5..84d5da3 100644 --- a/cpu/74xx_7xx/cpu.c +++ b/cpu/74xx_7xx/cpu.c @@ -44,6 +44,10 @@ #include <74xx_7xx.h> #include <asm/cache.h> +#if defined(CONFIG_OF_FLAT_TREE) +#include <ft_build.h> +#endif + #ifdef CONFIG_AMIGAONEG3SE #include "../board/MAI/AmigaOneG3SE/via686.h" #include "../board/MAI/AmigaOneG3SE/memio.h" @@ -101,6 +105,10 @@ get_cpu_type(void) type = CPU_7457; break; + case 0x8003: + type = CPU_7447A; + break; + case 0x8004: type = CPU_7448; break; @@ -156,6 +164,10 @@ int checkcpu (void) str = "MPC7410"; break; + case CPU_7447A: + str = "MPC7447A"; + break; + case CPU_7448: str = "MPC7448"; break; @@ -264,20 +276,19 @@ do_reset (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) /* * For the 7400 the TB clock runs at 1/4 the cpu bus speed. */ -#ifdef CONFIG_AMIGAONEG3SE +#if defined(CONFIG_AMIGAONEG3SE) || defined(CFG_CONFIG_BUS_CLK) unsigned long get_tbclk(void) { return (gd->bus_clk / 4); } -#else /* ! CONFIG_AMIGAONEG3SE */ +#else /* ! CONFIG_AMIGAONEG3SE and !CFG_CONFIG_BUS_CLK*/ unsigned long get_tbclk (void) { return CFG_BUS_HZ / 4; } -#endif /* CONFIG_AMIGAONEG3SE */ +#endif /* CONFIG_AMIGAONEG3SE or CFG_CONFIG_BUS_CLK*/ /* ------------------------------------------------------------------------- */ - #if defined(CONFIG_WATCHDOG) #if !defined(CONFIG_PCIPPC2) && !defined(CONFIG_BAB7xx) void @@ -289,3 +300,30 @@ watchdog_reset(void) #endif /* CONFIG_WATCHDOG */ /* ------------------------------------------------------------------------- */ + +#ifdef CONFIG_OF_FLAT_TREE +void +ft_cpu_setup (void *blob, bd_t *bd) +{ + u32 *p; + ulong clock; + int len; + + clock = bd->bi_busfreq; + + p = ft_get_prop (blob, "/cpus/" OF_CPU "/bus-frequency", &len); + if (p != NULL) + *p = cpu_to_be32 (clock); + +#if defined(CONFIG_TSI108_ETH) + p = ft_get_prop (blob, "/" OF_TSI "/ethernet@6200/address", &len); + memcpy (p, bd->bi_enetaddr, 6); +#endif + +#if defined(CONFIG_HAS_ETH1) + p = ft_get_prop (blob, "/" OF_TSI "/ethernet@6600/address", &len); + memcpy (p, bd->bi_enet1addr, 6); +#endif +} +#endif +/* ------------------------------------------------------------------------- */ diff --git a/cpu/74xx_7xx/cpu_init.c b/cpu/74xx_7xx/cpu_init.c index e02a4cc..1dd1b2c 100644 --- a/cpu/74xx_7xx/cpu_init.c +++ b/cpu/74xx_7xx/cpu_init.c @@ -43,6 +43,7 @@ cpu_init_f (void) case CPU_7450: case CPU_7455: case CPU_7457: + case CPU_7447A: case CPU_7448: /* enable the timebase bit in HID0 */ set_hid0(get_hid0() | 0x4000000); diff --git a/cpu/74xx_7xx/speed.c b/cpu/74xx_7xx/speed.c index d1800ed..d8c40ce 100644 --- a/cpu/74xx_7xx/speed.c +++ b/cpu/74xx_7xx/speed.c @@ -31,6 +31,8 @@ DECLARE_GLOBAL_DATA_PTR; +extern unsigned long get_board_bus_clk (void); + static const int hid1_multipliers_x_10[] = { 25, /* 0000 - 2.5x */ 75, /* 0001 - 7.5x */ @@ -50,6 +52,42 @@ static const int hid1_multipliers_x_10[] = { 0 /* 1111 - off */ }; +/* PLL_CFG[0:4] table for cpu 7448/7447A/7455/7457 */ +static const int hid1_74xx_multipliers_x_10[] = { + 115, /* 00000 - 11.5x */ + 170, /* 00001 - 17x */ + 75, /* 00010 - 7.5x */ + 150, /* 00011 - 15x */ + 70, /* 00100 - 7x */ + 180, /* 00101 - 18x */ + 10, /* 00110 - bypass */ + 200, /* 00111 - 20x */ + 20, /* 01000 - 2x */ + 210, /* 01001 - 21x */ + 65, /* 01010 - 6.5x */ + 130, /* 01011 - 13x */ + 85, /* 01100 - 8.5x */ + 240, /* 01101 - 24x */ + 95, /* 01110 - 9.5x */ + 90, /* 01111 - 9x */ + 30, /* 10000 - 3x */ + 105, /* 10001 - 10.5x */ + 55, /* 10010 - 5.5x */ + 110, /* 10011 - 11x */ + 40, /* 10100 - 4x */ + 100, /* 10101 - 10x */ + 50, /* 10110 - 5x */ + 120, /* 10111 - 12x */ + 80, /* 11000 - 8x */ + 140, /* 11001 - 14x */ + 60, /* 11010 - 6x */ + 160, /* 11011 - 16x */ + 135, /* 11100 - 13.5x */ + 280, /* 11101 - 28x */ + 0, /* 11110 - off */ + 125 /* 11111 - 12.5x */ +}; + static const int hid1_fx_multipliers_x_10[] = { 00, /* 0000 - off */ 00, /* 0001 - off */ @@ -89,22 +127,30 @@ int get_clocks (void) { ulong clock = 0; +#ifdef CFG_BUS_CLK + gd->bus_clk = CFG_BUS_CLK; /* bus clock is a fixed frequency */ +#else + gd->bus_clk = get_board_bus_clk (); /* bus clock is configurable */ +#endif + /* calculate the clock frequency based upon the CPU type */ switch (get_cpu_type()) { + case CPU_7447A: case CPU_7448: case CPU_7455: case CPU_7457: /* - * It is assumed that the PLL_EXT line is zero. * Make sure division is done before multiplication to prevent 32-bit * arithmetic overflows which will cause a negative number */ - clock = (CFG_BUS_CLK / 10) * hid1_multipliers_x_10[(get_hid1 () >> 13) & 0xF]; + clock = (gd->bus_clk / 10) * + hid1_74xx_multipliers_x_10[(get_hid1 () >> 12) & 0x1F]; break; case CPU_750GX: case CPU_750FX: - clock = CFG_BUS_CLK * hid1_fx_multipliers_x_10[get_hid1 () >> 27] / 10; + clock = gd->bus_clk * + hid1_fx_multipliers_x_10[get_hid1 () >> 27] / 10; break; case CPU_7450: @@ -121,7 +167,8 @@ int get_clocks (void) * Make sure division is done before multiplication to prevent 32-bit * arithmetic overflows which will cause a negative number */ - clock = (CFG_BUS_CLK / 10) * hid1_multipliers_x_10[get_hid1 () >> 28]; + clock = (gd->bus_clk / 10) * + hid1_multipliers_x_10[get_hid1 () >> 28]; break; case CPU_UNKNOWN: @@ -131,7 +178,6 @@ int get_clocks (void) } gd->cpu_clk = clock; - gd->bus_clk = CFG_BUS_CLK; return (0); } |