From a47a12becf66f02a56da91c161e2edb625e9f20c Mon Sep 17 00:00:00 2001 From: Stefan Roese Date: Thu, 15 Apr 2010 16:07:28 +0200 Subject: Move arch/ppc to arch/powerpc As discussed on the list, move "arch/ppc" to "arch/powerpc" to better match the Linux directory structure. Please note that this patch also changes the "ppc" target in MAKEALL to "powerpc" to match this new infrastructure. But "ppc" is kept as an alias for now, to not break compatibility with scripts using this name. Signed-off-by: Stefan Roese Acked-by: Wolfgang Denk Acked-by: Detlev Zundel Acked-by: Kim Phillips Cc: Peter Tyser Cc: Anatolij Gustschin --- arch/powerpc/cpu/mpc8220/speed.c | 123 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 123 insertions(+) create mode 100644 arch/powerpc/cpu/mpc8220/speed.c (limited to 'arch/powerpc/cpu/mpc8220/speed.c') diff --git a/arch/powerpc/cpu/mpc8220/speed.c b/arch/powerpc/cpu/mpc8220/speed.c new file mode 100644 index 000000000..62ac845b7 --- /dev/null +++ b/arch/powerpc/cpu/mpc8220/speed.c @@ -0,0 +1,123 @@ +/* + * (C) Copyright 2004, Freescale, Inc + * TsiChung Liew, Tsi-Chung.Liew@freescale.com. + * + * 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 +#include +#include + +DECLARE_GLOBAL_DATA_PTR; + +typedef struct pllmultiplier { + u8 hid1; + int multi; + int vco_div; +} pllcfg_t; + +/* ------------------------------------------------------------------------- */ + +/* + * + */ + +int get_clocks (void) +{ + pllcfg_t bus2core[] = { + {0x02, 2, 8}, /* 1 */ + {0x01, 2, 4}, + {0x0C, 3, 8}, /* 1.5 */ + {0x00, 3, 4}, + {0x18, 3, 2}, + {0x05, 4, 4}, /* 2 */ + {0x04, 4, 2}, + {0x11, 5, 4}, /* 2.5 */ + {0x06, 5, 2}, + {0x10, 6, 4}, /* 3 */ + {0x08, 6, 2}, + {0x0E, 7, 2}, /* 3.5 */ + {0x0A, 8, 2}, /* 4 */ + {0x07, 9, 2}, /* 4.5 */ + {0x0B, 10, 2}, /* 5 */ + {0x09, 11, 2}, /* 5.5 */ + {0x0D, 12, 2}, /* 6 */ + {0x12, 13, 2}, /* 6.5 */ + {0x14, 14, 2}, /* 7 */ + {0x16, 15, 2}, /* 7.5 */ + {0x1C, 16, 2} /* 8 */ + }; + u32 hid1; + int i, size, pci2bus; + +#if !defined(CONFIG_SYS_MPC8220_CLKIN) +#error clock measuring not implemented yet - define CONFIG_SYS_MPC8220_CLKIN +#endif + + gd->inp_clk = CONFIG_SYS_MPC8220_CLKIN; + + /* Read XLB to PCI(INP) clock multiplier */ + pci2bus = (*((volatile u32 *)PCI_REG_PCIGSCR) & + PCI_REG_PCIGSCR_PCI2XLB_CLK_MASK)>>PCI_REG_PCIGSCR_PCI2XLB_CLK_BIT; + + /* XLB bus clock */ + gd->bus_clk = CONFIG_SYS_MPC8220_CLKIN * pci2bus; + + /* PCI clock is same as input clock */ + gd->pci_clk = CONFIG_SYS_MPC8220_CLKIN; + + /* FlexBus is temporary set as the same as input clock */ + /* will do dynamic in the future */ + gd->flb_clk = CONFIG_SYS_MPC8220_CLKIN; + + /* CPU Clock - Read HID1 */ + asm volatile ("mfspr %0, 1009":"=r" (hid1):); + + size = sizeof (bus2core) / sizeof (pllcfg_t); + + hid1 >>= 27; + + for (i = 0; i < size; i++) + if (hid1 == bus2core[i].hid1) { + gd->cpu_clk = (bus2core[i].multi * gd->bus_clk) >> 1; + gd->vco_clk = CONFIG_SYS_MPC8220_SYSPLL_VCO_MULTIPLIER * (gd->pci_clk * bus2core[i].vco_div)/2; + break; + } + + /* hardcoded 81MHz for now */ + gd->pev_clk = 81000000; + + return (0); +} + +int prt_mpc8220_clks (void) +{ + char buf1[32], buf2[32], buf3[32], buf4[32]; + + printf (" Bus %s MHz, CPU %s MHz, PCI %s MHz, VCO %s MHz\n", + strmhz(buf1, gd->bus_clk), + strmhz(buf2, gd->cpu_clk), + strmhz(buf3, gd->pci_clk), + strmhz(buf4, gd->vco_clk) + ); + return (0); +} + +/* ------------------------------------------------------------------------- */ -- cgit v1.2.3-70-g09d2