diff options
Diffstat (limited to 'arch/ppc/boot/simple/rw4/rw4_init_brd.S')
| -rw-r--r-- | arch/ppc/boot/simple/rw4/rw4_init_brd.S | 1125 |
1 files changed, 0 insertions, 1125 deletions
diff --git a/arch/ppc/boot/simple/rw4/rw4_init_brd.S b/arch/ppc/boot/simple/rw4/rw4_init_brd.S deleted file mode 100644 index 386afdaad6c7..000000000000 --- a/arch/ppc/boot/simple/rw4/rw4_init_brd.S +++ /dev/null @@ -1,1125 +0,0 @@ -/*----------------------------------------------------------------------------+ -| This source code has been made available to you by IBM on an AS-IS -| basis. Anyone receiving this source is licensed under IBM -| copyrights to use it in any way he or she deems fit, including -| copying it, modifying it, compiling it, and redistributing it either -| with or without modifications. No license under IBM patents or -| patent applications is to be implied by the copyright license. -| -| Any user of this software should understand that IBM cannot provide -| technical support for this software and will not be responsible for -| any consequences resulting from the use of this software. -| -| Any person who transfers this source code or any derivative work -| must include the IBM copyright notice, this paragraph, and the -| preceding two paragraphs in the transferred software. -| -| COPYRIGHT I B M CORPORATION 1997 -| LICENSED MATERIAL - PROGRAM PROPERTY OF I B M -+----------------------------------------------------------------------------*/ -/*----------------------------------------------------------------------------+ -| Author: Tony J. Cerreto -| Component: BSPS -| File: init_brd.s -| Purpose: Vesta Evaluation Board initialization subroutines. The following -| routines are available: -| 1. INITB_EBIU0: Initialize EBIU0. -| 2. INITB_CONFIG: Configure board. -| 3. INITB_HSMC0: Initialize HSMC0 (SDRAM). -| 4. INITB_HSMC1: Initialize HSMC1 (SDRAM). -| 5. INITB_CACHE: Initialize Data and Instruction Cache. -| 6. INITB_DCACHE: Initialize Data Cache. -| 7. INITB_ICACHE: Initialize Instruction Cache. -| 8. INITB_GET_CSPD: Get CPU Speed (Bus Speed and Processor Speed) -| -| Changes: -| Date: Author Comment: -| --------- ------ -------- -| 01-Mar-00 tjc Created -| 04-Mar-00 jfh Modified CIC_SEL3_VAL to support 1284 (Mux3 & GPIO 21-28) -| 04-Mar-00 jfh Modified XILINIX Reg 0 to support 1284 (Mux3 & GPIO 21-28) -| 04-Mar-00 jfh Modified XILINIX Reg 1 to support 1284 (Mux3 & GPIO 21-28) -| 04-Mar-00 jfh Modified XILINIX Reg 4 to support 1284 (Mux3 & GPIO 21-28) -| 19-May-00 rlb Relcoated HSMC0 to 0x1F000000 to support 32MB of contiguous -| SDRAM space. Changed cache ctl regs to reflect this. -| 22-May-00 tjc Changed initb_get_cspd interface and eliminated -| initb_get_bspd routines. -| 26-May-00 tjc Added two nop instructions after all mtxxx/mfxxx -| instructions due to PPC405 bug. -+----------------------------------------------------------------------------*/ -#define VESTA -#include "ppc_40x.h" -#include "stb.h" - -/*----------------------------------------------------------------------------+ -| BOARD CONFIGURATION DEFINES -+----------------------------------------------------------------------------*/ -#define CBS0_CR_VAL 0x00000002 /* CBS control reg value */ -#define CIC0_CR_VAL 0xD0800448 /* CIC control reg value */ -#define CIC0_SEL3_VAL 0x11500000 /* CIC select 3 reg value */ -#define CIC0_VCR_VAL 0x00631700 /* CIC video cntl reg value */ - -/*----------------------------------------------------------------------------+ -| EBIU0 BANK REGISTERS DEFINES -+----------------------------------------------------------------------------*/ -#define EBIU0_BRCRH0_VAL 0x00000000 /* BR High 0 (Extension Reg)*/ -#define EBIU0_BRCRH1_VAL 0x00000000 /* BR High 1 (Extension Reg)*/ -#define EBIU0_BRCRH2_VAL 0x40000000 /* BR High 2 (Extension Reg)*/ -#define EBIU0_BRCRH3_VAL 0x40000000 /* BR High 3 (Extension Reg)*/ -#define EBIU0_BRCRH4_VAL 0x00000000 /* BR High 4 (Extension Reg)*/ -#define EBIU0_BRCRH5_VAL 0x00000000 /* BR High 5 (Extension Reg)*/ -#define EBIU0_BRCRH6_VAL 0x00000000 /* BR High 6 (Extension Reg)*/ -#define EBIU0_BRCRH7_VAL 0x40000000 /* BR High 7 (Extension Reg)*/ - -#define EBIU0_BRCR0_VAL 0xFC58BFFE /* BR 0: 16 bit Flash 4 MB */ -#define EBIU0_BRCR1_VAL 0xFF00BFFE /* BR 1: Ext Connector 1 MB */ -#if 1 -#define EBIU0_BRCR2_VAL 0x207CFFBE /* BR 2: Xilinx 8 MB */ - /* twt == 0x3f */ -#else -#define EBIU0_BRCR2_VAL 0x207CCFBE /* BR 2: Xilinx 8 MB */ - /* twt == 0x0f */ -#endif -#define EBIU0_BRCR3_VAL 0x407CBFBE /* BR 3: IDE Drive 8 MB */ -#define EBIU0_BRCR4_VAL 0xFF00BFFF /* BR 4: Disabled. 0 MB */ -#define EBIU0_BRCR5_VAL 0xFF00BFFF /* BR 5: Disabled. 0 MB */ -#define EBIU0_BRCR6_VAL 0xFF00BFFF /* BR 6: Disabled. 0 MB */ -#define EBIU0_BRCR7_VAL 0xCE3F0003 /* BR 7: Line Mode DMA 2 MB */ - -/*----------------------------------------------------------------------------+ -| GPIO DEFINES -+----------------------------------------------------------------------------*/ -#define STB_GPIO0_OUTPUT (STB_GPIO0_BASE_ADDRESS+ 0x00) -#define STB_GPIO0_TC (STB_GPIO0_BASE_ADDRESS+ 0x04) -#define STB_GPIO0_OS_0_31 (STB_GPIO0_BASE_ADDRESS+ 0x08) -#define STB_GPIO0_OS_32_63 (STB_GPIO0_BASE_ADDRESS+ 0x0C) -#define STB_GPIO0_TS_0_31 (STB_GPIO0_BASE_ADDRESS+ 0x10) -#define STB_GPIO0_TS_32_63 (STB_GPIO0_BASE_ADDRESS+ 0x14) -#define STB_GPIO0_OD (STB_GPIO0_BASE_ADDRESS+ 0x18) -#define STB_GPIO0_INPUT (STB_GPIO0_BASE_ADDRESS+ 0x1C) -#define STB_GPIO0_R1 (STB_GPIO0_BASE_ADDRESS+ 0x20) -#define STB_GPIO0_R2 (STB_GPIO0_BASE_ADDRESS+ 0x24) -#define STB_GPIO0_R3 (STB_GPIO0_BASE_ADDRESS+ 0x28) -#define STB_GPIO0_IS_1_0_31 (STB_GPIO0_BASE_ADDRESS+ 0x30) -#define STB_GPIO0_IS_1_32_63 (STB_GPIO0_BASE_ADDRESS+ 0x34) -#define STB_GPIO0_IS_2_0_31 (STB_GPIO0_BASE_ADDRESS+ 0x38) -#define STB_GPIO0_IS_2_32_63 (STB_GPIO0_BASE_ADDRESS+ 0x3C) -#define STB_GPIO0_IS_3_0_31 (STB_GPIO0_BASE_ADDRESS+ 0x40) -#define STB_GPIO0_IS_3_32_63 (STB_GPIO0_BASE_ADDRESS+ 0x44) -#define STB_GPIO0_SS_1 (STB_GPIO0_BASE_ADDRESS+ 0x50) -#define STB_GPIO0_SS_2 (STB_GPIO0_BASE_ADDRESS+ 0x54) -#define STB_GPIO0_SS_3 (STB_GPIO0_BASE_ADDRESS+ 0x58) - -#define GPIO0_TC_VAL 0x0C020004 /* three-state control val */ -#define GPIO0_OS_0_31_VAL 0x51A00004 /* output select 0-31 val */ -#define GPIO0_OS_32_63_VAL 0x0000002F /* output select 32-63 val */ -#define GPIO0_TS_0_31_VAL 0x51A00000 /* three-state sel 0-31 val*/ -#define GPIO0_TS_32_63_VAL 0x0000000F /* three-state sel 32-63 val*/ -#define GPIO0_OD_VAL 0xC0000004 /* open drain val */ -#define GPIO0_IS_1_0_31_VAL 0x50000151 /* input select 1 0-31 val */ -#define GPIO0_IS_1_32_63_VAL 0x00000000 /* input select 1 32-63 val */ -#define GPIO0_IS_2_0_31_VAL 0x00000000 /* input select 2 0-31 val */ -#define GPIO0_IS_2_32_63_VAL 0x00000000 /* input select 2 32-63 val */ -#define GPIO0_IS_3_0_31_VAL 0x00000440 /* input select 3 0-31 val */ -#define GPIO0_IS_3_32_63_VAL 0x00000000 /* input select 3 32-63 val */ -#define GPIO0_SS_1_VAL 0x00000000 /* sync select 1 val */ -#define GPIO0_SS_2_VAL 0x00000000 /* sync select 2 val */ -#define GPIO0_SS_3_VAL 0x00000000 /* sync select 3 val */ - -/*----------------------------------------------------------------------------+ -| XILINX DEFINES -+----------------------------------------------------------------------------*/ -#define STB_XILINX_LED (STB_FPGA_BASE_ADDRESS+ 0x0100) -#define STB_XILINX1_REG0 (STB_FPGA_BASE_ADDRESS+ 0x40000) -#define STB_XILINX1_REG1 (STB_FPGA_BASE_ADDRESS+ 0x40002) -#define STB_XILINX1_REG2 (STB_FPGA_BASE_ADDRESS+ 0x40004) -#define STB_XILINX1_REG3 (STB_FPGA_BASE_ADDRESS+ 0x40006) -#define STB_XILINX1_REG4 (STB_FPGA_BASE_ADDRESS+ 0x40008) -#define STB_XILINX1_REG5 (STB_FPGA_BASE_ADDRESS+ 0x4000A) -#define STB_XILINX1_REG6 (STB_FPGA_BASE_ADDRESS+ 0x4000C) -#define STB_XILINX1_ID (STB_FPGA_BASE_ADDRESS+ 0x4000E) -#define STB_XILINX1_FLUSH (STB_FPGA_BASE_ADDRESS+ 0x4000E) -#define STB_XILINX2_REG0 (STB_FPGA_BASE_ADDRESS+ 0x80000) -#define STB_XILINX2_REG1 (STB_FPGA_BASE_ADDRESS+ 0x80002) -#define STB_XILINX2_REG2 (STB_FPGA_BASE_ADDRESS+ 0x80004) - -#define XILINX1_R0_VAL 0x2440 /* Xilinx 1 Register 0 Val */ -#define XILINX1_R1_VAL 0x0025 /* Xilinx 1 Register 1 Val */ -#define XILINX1_R2_VAL 0x0441 /* Xilinx 1 Register 2 Val */ -#define XILINX1_R3_VAL 0x0008 /* Xilinx 1 Register 3 Val */ -#define XILINX1_R4_VAL 0x0100 /* Xilinx 1 Register 4 Val */ -#define XILINX1_R5_VAL 0x6810 /* Xilinx 1 Register 5 Val */ -#define XILINX1_R6_VAL 0x0000 /* Xilinx 1 Register 6 Val */ -#if 0 -#define XILINX2_R0_VAL 0x0008 /* Xilinx 2 Register 0 Val */ -#define XILINX2_R1_VAL 0x0000 /* Xilinx 2 Register 1 Val */ -#else -#define XILINX2_R0_VAL 0x0018 /* disable IBM IrDA RxD */ -#define XILINX2_R1_VAL 0x0008 /* enable SICC MAX chip */ -#endif -#define XILINX2_R2_VAL 0x0000 /* Xilinx 2 Register 2 Val */ - -/*----------------------------------------------------------------------------+ -| HSMC BANK REGISTERS DEFINES -+----------------------------------------------------------------------------*/ -#ifdef SDRAM16MB -#define HSMC0_BR0_VAL 0x000D2D55 /* 0x1F000000-007FFFFF R/W */ -#define HSMC0_BR1_VAL 0x008D2D55 /* 0x1F800000-1FFFFFFF R/W */ -#else -#define HSMC0_BR0_VAL 0x1F0D2D55 /* 0x1F000000-007FFFFF R/W */ -#define HSMC0_BR1_VAL 0x1F8D2D55 /* 0x1F800000-1FFFFFFF R/W */ -#endif -#define HSMC1_BR0_VAL 0xA00D2D55 /* 0xA0000000-A07FFFFF R/W */ -#define HSMC1_BR1_VAL 0xA08D2D55 /* 0xA0800000-A0FFFFFF R/W */ - -/*----------------------------------------------------------------------------+ -| CACHE DEFINES -+----------------------------------------------------------------------------*/ -#define DCACHE_NLINES 128 /* no. D-cache lines */ -#define DCACHE_NBYTES 32 /* no. bytes/ D-cache line */ -#define ICACHE_NLINES 256 /* no. I-cache lines */ -#define ICACHE_NBYTES 32 /* no. bytes/ I-cache line */ -#ifdef SDRAM16MB -#define DCACHE_ENABLE 0x80000000 /* D-cache regions to enable*/ -#define ICACHE_ENABLE 0x80000001 /* I-cache regions to enable*/ -#else -#define DCACHE_ENABLE 0x18000000 /* D-cache regions to enable*/ -#define ICACHE_ENABLE 0x18000001 /* I-cache regions to enable*/ -#endif - -/*----------------------------------------------------------------------------+ -| CPU CORE SPEED CALCULATION DEFINES -+----------------------------------------------------------------------------*/ -#define GCS_LCNT 500000 /* CPU speed loop count */ -#define GCS_TROW_BYTES 8 /* no. bytes in table row */ -#define GCS_CTICK_TOL 100 /* allowable clock tick tol */ -#define GCS_NMULT 4 /* no. of core speed mults */ - - /*--------------------------------------------------------------------+ - | No. 13.5Mhz - | Clock Ticks - | based on a - | loop count Bus - | of 100,000 Speed - +--------------------------------------------------------------------*/ -gcs_lookup_table: - .int 50000, 54000000 /* 54.0 Mhz */ - .int 66667, 40500000 /* 40.5 Mhz */ - .int 54545, 49500000 /* 49.5 Mhz */ - .int 46154, 58500000 /* 58.5 Mhz */ - .int 0, 0 /* end of table flag */ - - -/*****************************************************************************+ -| XXXXXXX XXX XXX XXXXXX XXXXXXX XXXXXX XX XX XX XXXX -| XX X XX XX X XX X XX X XX XX XXX XX XXXX XX -| XX X XXX XX XX X XX XX XXXX XX XX XX XX -| XXXX X XX XXXX XXXXX XX XXXX XX XX XX -| XX X XXX XX XX X XX XX XX XXX XXXXXX XX -| XX X XX XX XX XX X XX XX XX XX XX XX XX XX -| XXXXXXX XXX XXX XXXX XXXXXXX XXX XX XX XX XX XX XXXXXXX -+*****************************************************************************/ -/****************************************************************************** -| -| Routine: INITB_EBIU0. -| -| Purpose: Initialize all the EBIU0 Bank Registers -| Parameters: None. -| Returns: None. -| -******************************************************************************/ - function_prolog(initb_ebiu0) - /*--------------------------------------------------------------------+ - | Set EBIU0 Bank 0 - +--------------------------------------------------------------------*/ - lis r10,EBIU0_BRCR0_VAL@h - ori r10,r10,EBIU0_BRCR0_VAL@l - mtdcr ebiu0_brcr0,r10 - lis r10,EBIU0_BRCRH0_VAL@h - ori r10,r10,EBIU0_BRCRH0_VAL@l - mtdcr ebiu0_brcrh0,r10 - - /*--------------------------------------------------------------------+ - | Set EBIU0 Bank 1 - +--------------------------------------------------------------------*/ - lis r10,EBIU0_BRCR1_VAL@h - ori r10,r10,EBIU0_BRCR1_VAL@l - mtdcr ebiu0_brcr1,r10 - lis r10,EBIU0_BRCRH1_VAL@h - ori r10,r10,EBIU0_BRCRH1_VAL@l - mtdcr ebiu0_brcrh1,r10 - - /*--------------------------------------------------------------------+ - | Set EBIU0 Bank 2 - +--------------------------------------------------------------------*/ - lis r10,EBIU0_BRCR2_VAL@h - ori r10,r10,EBIU0_BRCR2_VAL@l - mtdcr ebiu0_brcr2,r10 - lis r10,EBIU0_BRCRH2_VAL@h - ori r10,r10,EBIU0_BRCRH2_VAL@l - mtdcr ebiu0_brcrh2,r10 - - /*--------------------------------------------------------------------+ - | Set EBIU0 Bank 3 - +--------------------------------------------------------------------*/ - lis r10,EBIU0_BRCR3_VAL@h - ori r10,r10,EBIU0_BRCR3_VAL@l - mtdcr ebiu0_brcr3,r10 - lis r10,EBIU0_BRCRH3_VAL@h - ori r10,r10,EBIU0_BRCRH3_VAL@l - mtdcr ebiu0_brcrh3,r10 - - /*--------------------------------------------------------------------+ - | Set EBIU0 Bank 4 - +--------------------------------------------------------------------*/ - lis r10,EBIU0_BRCR4_VAL@h - ori r10,r10,EBIU0_BRCR4_VAL@l - mtdcr ebiu0_brcr4,r10 - lis r10,EBIU0_BRCRH4_VAL@h - ori r10,r10,EBIU0_BRCRH4_VAL@l - mtdcr ebiu0_brcrh4,r10 - - /*--------------------------------------------------------------------+ - | Set EBIU0 Bank 5 - +--------------------------------------------------------------------*/ - lis r10,EBIU0_BRCR5_VAL@h - ori r10,r10,EBIU0_BRCR5_VAL@l - mtdcr ebiu0_brcr5,r10 - lis r10,EBIU0_BRCRH5_VAL@h - ori r10,r10,EBIU0_BRCRH5_VAL@l - mtdcr ebiu0_brcrh5,r10 - - /*--------------------------------------------------------------------+ - | Set EBIU0 Bank 6 - +--------------------------------------------------------------------*/ - lis r10,EBIU0_BRCR6_VAL@h - ori r10,r10,EBIU0_BRCR6_VAL@l - mtdcr ebiu0_brcr6,r10 - lis r10,EBIU0_BRCRH6_VAL@h - ori r10,r10,EBIU0_BRCRH6_VAL@l - mtdcr ebiu0_brcrh6,r10 - - /*--------------------------------------------------------------------+ - | Set EBIU0 Bank 7 - +--------------------------------------------------------------------*/ - lis r10,EBIU0_BRCR7_VAL@h - ori r10,r10,EBIU0_BRCR7_VAL@l - mtdcr ebiu0_brcr7,r10 - lis r10,EBIU0_BRCRH7_VAL@h - ori r10,r10,EBIU0_BRCRH7_VAL@l - mtdcr ebiu0_brcrh7,r10 - - blr - function_epilog(initb_ebiu0) - - -/****************************************************************************** -| -| Routine: INITB_CONFIG -| -| Purpose: Configure the Vesta Evaluation Board. The following items -| will be configured: -| 1. Cross-Bar Switch. -| 2. Chip Interconnect. -| 3. Clear/reset key PPC registers. -| 4. Xilinx and GPIO Registers. -| -| Returns: None. -| -******************************************************************************/ - function_prolog(initb_config) - /*--------------------------------------------------------------------+ - | Init CROSS-BAR SWITCH - +--------------------------------------------------------------------*/ - lis r10,CBS0_CR_VAL@h /* r10 <- CBS Cntl Reg val */ - ori r10,r10,CBS0_CR_VAL@l - mtdcr cbs0_cr,r10 - - /*--------------------------------------------------------------------+ - | Init Chip-Interconnect (CIC) Registers - +--------------------------------------------------------------------*/ - lis r10,CIC0_CR_VAL@h /* r10 <- CIC Cntl Reg val */ - ori r10,r10,CIC0_CR_VAL@l - mtdcr cic0_cr,r10 - - lis r10,CIC0_SEL3_VAL@h /* r10 <- CIC SEL3 Reg val */ - ori r10,r10,CIC0_SEL3_VAL@l - mtdcr cic0_sel3,r10 - - lis r10,CIC0_VCR_VAL@h /* r10 <- CIC Vid C-Reg val */ - ori r10,r10,CIC0_VCR_VAL@l - mtdcr cic0_vcr,r10 - - /*--------------------------------------------------------------------+ - | Clear SGR and DCWR - +--------------------------------------------------------------------*/ - li r10,0x0000 - mtspr sgr,r10 - mtspr dcwr,r10 - - /*--------------------------------------------------------------------+ - | Clear/set up some machine state registers. - +--------------------------------------------------------------------*/ - li r10,0x0000 /* r10 <- 0 */ - mtdcr ebiu0_besr,r10 /* clr Bus Err Syndrome Reg */ - mtspr esr,r10 /* clr Exceptn Syndrome Reg */ - mttcr r10 /* timer control register */ - - mtdcr uic0_er,r10 /* disable all interrupts */ - - /* UIC_IIC0 | UIC_IIC1 | UIC_U0 | UIC_IR_RCV | UIC_IR_XMIT */ - lis r10, 0x00600e00@h - ori r10,r10,0x00600e00@l - mtdcr uic0_pr,r10 - - li r10,0x00000020 /* UIC_EIR1 */ - mtdcr uic0_tr,r10 - - lis r10,0xFFFF /* r10 <- 0xFFFFFFFF */ - ori r10,r10,0xFFFF /* */ - mtdbsr r10 /* clear/reset the dbsr */ - mtdcr uic0_sr,r10 /* clear pending interrupts */ - - li r10,0x1000 /* set Machine Exception bit*/ - oris r10,r10,0x2 /* set Criticl Exception bit*/ - mtmsr r10 /* change MSR */ - - /*--------------------------------------------------------------------+ - | Clear XER. - +--------------------------------------------------------------------*/ - li r10,0x0000 - mtxer r10 - - /*--------------------------------------------------------------------+ - | Init GPIO0 Registers - +--------------------------------------------------------------------*/ - lis r10, STB_GPIO0_TC@h /* Three-state control */ - ori r10,r10,STB_GPIO0_TC@l - lis r11, GPIO0_TC_VAL@h - ori r11,r11,GPIO0_TC_VAL@l - stw r11,0(r10) - - lis r10, STB_GPIO0_OS_0_31@h /* output select 0-31 */ - ori r10,r10,STB_GPIO0_OS_0_31@l - lis r11, GPIO0_OS_0_31_VAL@h - ori r11,r11,GPIO0_OS_0_31_VAL@l - stw r11,0(r10) - - lis r10, STB_GPIO0_OS_32_63@h /* output select 32-63 */ - ori r10,r10,STB_GPIO0_OS_32_63@l - lis r11, GPIO0_OS_32_63_VAL@h - ori r11,r11,GPIO0_OS_32_63_VAL@l - stw r11,0(r10) - - lis r10, STB_GPIO0_TS_0_31@h /* three-state select 0-31 */ - ori r10,r10,STB_GPIO0_TS_0_31@l - lis r11, GPIO0_TS_0_31_VAL@h - ori r11,r11,GPIO0_TS_0_31_VAL@l - stw r11,0(r10) - - lis r10, STB_GPIO0_TS_32_63@h /* three-state select 32-63 */ - ori r10,r10,STB_GPIO0_TS_32_63@l - lis r11, GPIO0_TS_32_63_VAL@h - ori r11,r11,GPIO0_TS_32_63_VAL@l - stw r11,0(r10) - - lis r10, STB_GPIO0_OD@h /* open drain */ - ori r10,r10,STB_GPIO0_OD@l - lis r11, GPIO0_OD_VAL@h - ori r11,r11,GPIO0_OD_VAL@l - stw r11,0(r10) - - lis r10, STB_GPIO0_IS_1_0_31@h /* input select 1, 0-31 */ - ori r10,r10,STB_GPIO0_IS_1_0_31@l - lis r11, GPIO0_IS_1_0_31_VAL@h - ori r11,r11,GPIO0_IS_1_0_31_VAL@l - stw r11,0(r10) - - lis r10, STB_GPIO0_IS_1_32_63@h /* input select 1, 32-63 */ - ori r10,r10,STB_GPIO0_IS_1_32_63@l - lis r11, GPIO0_IS_1_32_63_VAL@h - ori r11,r11,GPIO0_IS_1_32_63_VAL@l - stw r11,0(r10) - - lis r10, STB_GPIO0_IS_2_0_31@h /* input select 2, 0-31 */ - ori r10,r10,STB_GPIO0_IS_2_0_31@l - lis r11, GPIO0_IS_2_0_31_VAL@h - ori r11,r11,GPIO0_IS_2_0_31_VAL@l - stw r11,0(r10) - - lis r10, STB_GPIO0_IS_2_32_63@h /* input select 2, 32-63 */ - ori r10,r10,STB_GPIO0_IS_2_32_63@l - lis r11, GPIO0_IS_2_32_63_VAL@h - ori r11,r11,GPIO0_IS_2_32_63_VAL@l - stw r11,0(r10) - - lis r10, STB_GPIO0_IS_3_0_31@h /* input select 3, 0-31 */ - ori r10,r10,STB_GPIO0_IS_3_0_31@l - lis r11, GPIO0_IS_3_0_31_VAL@h - ori r11,r11,GPIO0_IS_3_0_31_VAL@l - stw r11,0(r10) - - lis r10, STB_GPIO0_IS_3_32_63@h /* input select 3, 32-63 */ - ori r10,r10,STB_GPIO0_IS_3_32_63@l - lis r11, GPIO0_IS_3_32_63_VAL@h - ori r11,r11,GPIO0_IS_3_32_63_VAL@l - stw r11,0(r10) - - lis r10, STB_GPIO0_SS_1@h /* sync select 1 */ - ori r10,r10,STB_GPIO0_SS_1@l - lis r11, GPIO0_SS_1_VAL@h - ori r11,r11,GPIO0_SS_1_VAL@l - stw r11,0(r10) - - lis r10, STB_GPIO0_SS_2@h /* sync select 2 */ - ori r10,r10,STB_GPIO0_SS_2@l - lis r11, GPIO0_SS_2_VAL@h - ori r11,r11,GPIO0_SS_2_VAL@l - stw r11,0(r10) - - lis r10, STB_GPIO0_SS_3@h /* sync select 3 */ - ori r10,r10,STB_GPIO0_SS_3@l - lis r11, GPIO0_SS_3_VAL@h - ori r11,r11,GPIO0_SS_3_VAL@l - stw r11,0(r10) - - /*--------------------------------------------------------------------+ - | Init Xilinx #1 Registers - +--------------------------------------------------------------------*/ - lis r10, STB_XILINX1_REG0@h /* init Xilinx1 Reg 0 */ - ori r10,r10,STB_XILINX1_REG0@l - li r11,XILINX1_R0_VAL - sth r11,0(r10) - - lis r10, STB_XILINX1_REG1@h /* init Xilinx1 Reg 1 */ - ori r10,r10,STB_XILINX1_REG1@l - li r11,XILINX1_R1_VAL - sth r11,0(r10) - - lis r10, STB_XILINX1_REG2@h /* init Xilinx1 Reg 2 */ - ori r10,r10,STB_XILINX1_REG2@l - li r11,XILINX1_R2_VAL - sth r11,0(r10) - - lis r10, STB_XILINX1_REG3@h /* init Xilinx1 Reg 3 */ - ori r10,r10,STB_XILINX1_REG3@l - li r11,XILINX1_R3_VAL - sth r11,0(r10) - - lis r10, STB_XILINX1_REG4@h /* init Xilinx1 Reg 4 */ - ori r10,r10,STB_XILINX1_REG4@l - li r11,XILINX1_R4_VAL - sth r11,0(r10) - - lis r10, STB_XILINX1_REG5@h /* init Xilinx1 Reg 5 */ - ori r10,r10,STB_XILINX1_REG5@l - li r11,XILINX1_R5_VAL - sth r11,0(r10) - - lis r10, STB_XILINX1_REG6@h /* init Xilinx1 Reg 6 */ - ori r10,r10,STB_XILINX1_REG6@l - li r11,XILINX1_R6_VAL - sth r11,0(r10) - - lis r10, STB_XILINX1_FLUSH@h /* latch registers in Xilinx*/ - ori r10,r10,STB_XILINX1_FLUSH@l - li r11,0x0000 - sth r11,0(r10) - - /*--------------------------------------------------------------------+ - | Init Xilinx #2 Registers - +--------------------------------------------------------------------*/ - lis r10, STB_XILINX2_REG0@h /* init Xilinx2 Reg 0 */ - ori r10,r10,STB_XILINX2_REG0@l - li r11,XILINX2_R0_VAL - sth r11,0(r10) - - lis r10, STB_XILINX2_REG1@h /* init Xilinx2 Reg 1 */ - ori r10,r10,STB_XILINX2_REG1@l - li r11,XILINX2_R1_VAL - sth r11,0(r10) - - lis r10, STB_XILINX2_REG2@h /* init Xilinx2 Reg 2 */ - ori r10,r10,STB_XILINX2_REG2@l - li r11,XILINX2_R2_VAL - sth r11,0(r10) - - blr - function_epilog(initb_config) - - -/****************************************************************************** -| -| Routine: INITB_HSMC0. -| -| Purpose: Initialize the HSMC0 Registers for SDRAM -| Parameters: None. -| Returns: R3 = 0: Successful -| = -1: Unsuccessful, SDRAM did not reset properly. -| -******************************************************************************/ - function_prolog(initb_hsmc0) - mflr r0 /* Save return addr */ - - /*--------------------------------------------------------------------+ - | Set Global SDRAM Controller to recommended default - +--------------------------------------------------------------------*/ - lis r10,0x6C00 - ori r10,r10,0x0000 - mtdcr hsmc0_gr,r10 - - /*--------------------------------------------------------------------+ - | Set HSMC0 Data Register to recommended default - +--------------------------------------------------------------------*/ - lis r10,0x0037 - ori r10,r10,0x0000 - mtdcr hsmc0_data,r10 - - /*--------------------------------------------------------------------+ - | Init HSMC0 Bank Register 0 - +--------------------------------------------------------------------*/ - lis r10,HSMC0_BR0_VAL@h - ori r10,r10,HSMC0_BR0_VAL@l - mtdcr hsmc0_br0,r10 - - /*--------------------------------------------------------------------+ - | Init HSMC0 Bank Register 1 - +--------------------------------------------------------------------*/ - lis r10,HSMC0_BR1_VAL@h - ori r10,r10,HSMC0_BR1_VAL@l - mtdcr hsmc0_br1,r10 - - /*--------------------------------------------------------------------+ - | Set HSMC0 Control Reg 0 - +--------------------------------------------------------------------*/ - lis r10,0x8077 /* PRECHARGE ALL DEVICE BKS */ - ori r10,r10,0x0000 - mtdcr hsmc0_cr0,r10 - li r3,0x0000 - bl hsmc_cr_wait /* wait for op completion */ - cmpwi cr0,r3,0x0000 - bne cr0,hsmc0_err - - lis r10,0x8078 /* AUTO-REFRESH */ - ori r10,r10,0x0000 - mtdcr hsmc0_cr0,r10 - li r3,0x0000 - bl hsmc_cr_wait /* wait for op completion */ - cmpwi cr0,r3,0x0000 - bne cr0,hsmc0_err - - lis r10,0x8070 /* PROG MODE W/DATA REG VAL */ - ori r10,r10,0x8000 - mtdcr hsmc0_cr0,r10 - li r3,0x0000 - bl hsmc_cr_wait /* wait for op completion */ - cmpwi cr0,r3,0x0000 - bne hsmc0_err - - /*--------------------------------------------------------------------+ - | Set HSMC0 Control Reg 1 - +--------------------------------------------------------------------*/ - lis r10,0x8077 /* PRECHARGE ALL DEVICE BKS */ - ori r10,r10,0x0000 - mtdcr hsmc0_cr1,r10 - li r3,0x0001 - bl hsmc_cr_wait /* wait for op completion */ - cmpwi cr0,r3,0x0000 - bne cr0,hsmc0_err - - lis r10,0x8078 /* AUTO-REFRESH */ - ori r10,r10,0x0000 - mtdcr hsmc0_cr1,r10 - li r3,0x0001 - bl hsmc_cr_wait /* wait for op completion */ - cmpwi cr0,r3,0x0000 - bne cr0,hsmc0_err - - lis r10,0x8070 /* PROG MODE W/DATA REG VAL */ - ori r10,r10,0x8000 - mtdcr hsmc0_cr1,r10 - li r3,0x0001 - bl hsmc_cr_wait /* wait for op completion */ - cmpwi cr0,r3,0x0000 - bne cr0,hsmc0_err - - /*--------------------------------------------------------------------+ - | Set HSMC0 Refresh Register - +--------------------------------------------------------------------*/ - lis r10,0x0FE1 - ori r10,r10,0x0000 - mtdcr hsmc0_crr,r10 - li r3,0 - -hsmc0_err: - mtlr r0 - blr - function_epilog(initb_hsmc0) - - -/****************************************************************************** -| -| Routine: INITB_HSMC1. -| -| Purpose: Initialize the HSMC1 Registers for SDRAM -| Parameters: None. -| Returns: R3 = 0: Successful -| = -1: Unsuccessful, SDRAM did not reset properly. -| -******************************************************************************/ - function_prolog(initb_hsmc1) - mflr r0 /* Save return addr */ - - /*--------------------------------------------------------------------+ - | Set Global SDRAM Controller to recommended default - +--------------------------------------------------------------------*/ - lis r10,0x6C00 - ori r10,r10,0x0000 - mtdcr hsmc1_gr,r10 - - /*--------------------------------------------------------------------+ - | Set HSMC1 Data Register to recommended default - +--------------------------------------------------------------------*/ - lis r10,0x0037 - ori r10,r10,0x0000 - mtdcr hsmc1_data,r10 - - /*--------------------------------------------------------------------+ - | Init HSMC1 Bank Register 0 - +--------------------------------------------------------------------*/ - lis r10,HSMC1_BR0_VAL@h - ori r10,r10,HSMC1_BR0_VAL@l - mtdcr hsmc1_br0,r10 - - /*--------------------------------------------------------------------+ - | Init HSMC1 Bank Register 1 - +--------------------------------------------------------------------*/ - lis r10,HSMC1_BR1_VAL@h - ori r10,r10,HSMC1_BR1_VAL@l - mtdcr hsmc1_br1,r10 - - /*--------------------------------------------------------------------+ - | Set HSMC1 Control Reg 0 - +--------------------------------------------------------------------*/ - lis r10,0x8077 /* PRECHARGE ALL DEVICE BANKS */ - ori r10,r10,0x0000 - mtdcr hsmc1_cr0,r10 - li r3,0x0002 - bl hsmc_cr_wait /* wait for operation completion */ - cmpwi cr0,r3,0x0000 - bne hsmc1_err - - lis r10,0x8078 /* AUTO-REFRESH */ - ori r10,r10,0x0000 - mtdcr hsmc1_cr0,r10 - li r3,0x0002 - bl hsmc_cr_wait /* wait for operation completion */ - cmpwi cr0,r3,0x0000 - bne hsmc1_err - - lis r10,0x8070 /* PROGRAM MODE W/DATA REG VALUE */ - ori r10,r10,0x8000 - mtdcr hsmc1_cr0,r10 - li r3,0x0002 - bl hsmc_cr_wait /* wait for operation completion */ - cmpwi cr0,r3,0x0000 - bne hsmc1_err - - /*--------------------------------------------------------------------+ - | Set HSMC1 Control Reg 1 - +--------------------------------------------------------------------*/ - lis r10,0x8077 /* PRECHARGE ALL DEVICE BKS */ - ori r10,r10,0x0000 - mtdcr hsmc1_cr1,r10 - li r3,0x0003 - bl hsmc_cr_wait /* wait for op completion */ - cmpwi cr0,r3,0x0000 - bne hsmc1_err - - lis r10,0x8078 /* AUTO-REFRESH */ - ori r10,r10,0x0000 - mtdcr hsmc1_cr1,r10 - li r3,0x0003 - bl hsmc_cr_wait /* wait for op completion */ - cmpwi cr0,r3,0x0000 - bne hsmc1_err - - lis r10,0x8070 /* PROG MODE W/DATA REG VAL */ - ori r10,r10,0x8000 - mtdcr hsmc1_cr1,r10 - li r3,0x0003 - bl hsmc_cr_wait /* wait for op completion */ - cmpwi cr0,r3,0x0000 - bne hsmc1_err - - /*--------------------------------------------------------------------+ - | Set HSMC1 Refresh Register - +--------------------------------------------------------------------*/ - lis r10,0x0FE1 - ori r10,r10,0x0000 - mtdcr hsmc1_crr,r10 - xor r3,r3,r3 - -hsmc1_err: - mtlr r0 - blr - function_epilog(initb_hsmc1) - - -/****************************************************************************** -| -| Routine: INITB_CACHE -| -| Purpose: This routine will enable Data and Instruction Cache. -| The Data Cache is an 8K two-way set associative and the -| Instruction Cache is an 16K two-way set associative cache. -| -| Parameters: None. -| -| Returns: None. -| -******************************************************************************/ - function_prolog(initb_cache) - mflr r0 /* Save return addr */ - - bl initb_Dcache /* enable D-Cache */ - bl initb_Icache /* enable I-Cache */ - - mtlr r0 - blr - function_epilog(initb_cache) - - -/****************************************************************************** -| -| Routine: INITB_DCACHE -| -| Purpose: This routine will invalidate all data in the Data Cache and -| then enable D-Cache. If cache is enabled already, the D-Cache -| will be flushed before the data is invalidated. -| -| Parameters: None. -| -| Returns: None. -| -******************************************************************************/ - function_prolog(initb_Dcache) - /*--------------------------------------------------------------------+ - | Flush Data Cache if enabled - +--------------------------------------------------------------------*/ - mfdccr r10 /* r10 <- DCCR */ - isync /* ensure prev insts done */ - cmpwi r10,0x00 - beq ic_dcinv /* D-cache off, invalidate */ - - /*--------------------------------------------------------------------+ - | Data Cache enabled, force known memory addresses to be Cached - +--------------------------------------------------------------------*/ - lis r10,HSMC0_BR0_VAL@h /* r10 <- first memory loc */ - andis. r10,r10,0xFFF0 - li r11,DCACHE_NLINES /* r11 <- # A-way addresses */ - addi r11,r11,DCACHE_NLINES /* r11 <- # B-way addresses */ - mtctr r11 /* set loop counter */ - -ic_dcload: - lwz r12,0(r10) /* force cache of address */ - addi r10,r10,DCACHE_NBYTES /* r10 <- next memory loc */ - bdnz ic_dcload - sync /* ensure prev insts done */ - isync - - /*--------------------------------------------------------------------+ - | Flush the known memory addresses from Cache - +--------------------------------------------------------------------*/ - lis r10,HSMC0_BR0_VAL@h /* r10 <- first memory loc */ - andis. r10,r10,0xFFF0 - mtctr r11 /* set loop counter */ - -ic_dcflush: - dcbf 0,r10 /* flush D-cache line */ - addi r10,r10,DCACHE_NBYTES /* r10 <- next memory loc */ - bdnz ic_dcflush - sync /* ensure prev insts done */ - isync - - /*--------------------------------------------------------------------+ - | Disable then invalidate Data Cache - +--------------------------------------------------------------------*/ - li r10,0 /* r10 <- 0 */ - mtdccr r10 /* disable the D-Cache */ - isync /* ensure prev insts done */ - -ic_dcinv: - li r10,0 /* r10 <- line address */ - li r11,DCACHE_NLINES /* r11 <- # lines in cache */ - mtctr r11 /* set loop counter */ - -ic_dcloop: - dccci 0,r10 /* invalidate A/B cache lns */ - addi r10,r10,DCACHE_NBYTES /* bump to next line */ - bdnz ic_dcloop - sync /* ensure prev insts done */ - isync - - /*--------------------------------------------------------------------+ - | Enable Data Cache - +--------------------------------------------------------------------*/ - lis r10,DCACHE_ENABLE@h /* r10 <- D-cache enable msk*/ - ori r10,r10,DCACHE_ENABLE@l - mtdccr r10 - sync /* ensure prev insts done */ - isync - - blr - function_epilog(initb_Dcache) - - -/****************************************************************************** -| -| Routine: INITB_ICACHE -| -| Purpose: This routine will invalidate all data in the Instruction -| Cache then enable I-Cache. -| -| Parameters: None. -| -| Returns: None. -| -******************************************************************************/ - function_prolog(initb_Icache) - /*--------------------------------------------------------------------+ - | Invalidate Instruction Cache - +--------------------------------------------------------------------*/ - li r10,0 /* r10 <- lines address */ - iccci 0,r10 /* invalidate all I-cache */ - sync /* ensure prev insts done */ - isync - - /*--------------------------------------------------------------------+ - | Enable Instruction Cache - +--------------------------------------------------------------------*/ - lis r10,ICACHE_ENABLE@h /* r10 <- I-cache enable msk*/ - ori r10,r10,ICACHE_ENABLE@l - mticcr r10 - sync /* ensure prev insts done */ - isync - - blr - function_epilog(initb_Icache) - -#if 0 -/****************************************************************************** -| -| Routine: INITB_GET_CSPD -| -| Purpose: Determine the CPU Core Speed. The 13.5 Mhz Time Base -| Counter (TBC) is used to measure a conditional branch -| instruction. -| -| Parameters: R3 = Address of Bus Speed -| R4 = Address of Core Speed -| -| Returns: (R3) = >0: Bus Speed. -| 0: Bus Speed not found in Look-Up Table. -| (R4) = >0: Core Speed. -| 0: Core Speed not found in Look-Up Table. -| -| Note: 1. This routine assumes the bdnz branch instruction takes -| two instruction cycles to complete. -| 2. This routine must be called before interrupts are enabled. -| -******************************************************************************/ - function_prolog(initb_get_cspd) - mflr r0 /* Save return address */ - /*--------------------------------------------------------------------+ - | Set-up timed loop - +--------------------------------------------------------------------*/ - lis r9,gcs_time_loop@h /* r9 <- addr loop instr */ - ori r9,r9,gcs_time_loop@l - lis r10,GCS_LCNT@h /* r10 <- loop count */ - ori r10,r10,GCS_LCNT@l - mtctr r10 /* ctr <- loop count */ - lis r11,STB_TIMERS_TBC@h /* r11 <- TBC register addr */ - ori r11,r11,STB_TIMERS_TBC@l - li r12,0 /* r12 <- 0 */ - - /*--------------------------------------------------------------------+ - | Cache timed-loop instruction - +--------------------------------------------------------------------*/ - icbt 0,r9 - sync - isync - - /*--------------------------------------------------------------------+ - | Get number of 13.5 Mhz cycles to execute time-loop - +--------------------------------------------------------------------*/ - stw r12,0(r11) /* reset TBC */ -gcs_time_loop: - bdnz+ gcs_time_loop /* force branch pred taken */ - lwz r5,0(r11) /* r5 <- num 13.5 Mhz ticks */ - li r6,5 /* LUT based on 1/5th the...*/ - divw r5,r5,r6 /*..loop count used */ - sync - isync - - /*--------------------------------------------------------------------+ - | Look-up core speed based on TBC value - +--------------------------------------------------------------------*/ - lis r6,gcs_lookup_table@h /* r6 <- pts at core spd LUT*/ - ori r6,r6,gcs_lookup_table@l - bl gcs_cspd_lookup /* find core speed in LUT */ - - mtlr r0 /* set return address */ - blr - function_epilog(initb_get_cspd) - -#endif -/*****************************************************************************+ -| XXXX XX XX XXXXXX XXXXXXX XXXXXX XX XX XX XXXX -| XX XXX XX X XX X XX X XX XX XXX XX XXXX XX -| XX XXXX XX XX XX X XX XX XXXX XX XX XX XX -| XX XX XXXX XX XXXX XXXXX XX XXXX XX XX XX -| XX XX XXX XX XX X XX XX XX XXX XXXXXX XX -| XX XX XX XX XX X XX XX XX XX XX XX XX XX -| XXXX XX XX XXXX XXXXXXX XXX XX XX XX XX XX XXXXXXX -+*****************************************************************************/ -/****************************************************************************** -| -| Routine: HSMC_CR_WAIT -| -| Purpose: Wait for the HSMC Control Register (bits 12-16) to be reset -| after an auto-refresh, pre-charge or program mode register -| command execution. -| -| Parameters: R3 = HSMC Control Register ID. -| 0: HSMC0 CR0 -| 1: HSMC0 CR1 -| 2: HSMC1 CR0 -| 3: HSMC1 CR1 -| -| Returns: R3 = 0: Successful -| -1: Unsuccessful -| -******************************************************************************/ -hsmc_cr_wait: - - li r11,10 /* r11 <- retry counter */ - mtctr r11 /* set retry counter */ - mr r11,r3 /* r11 <- HSMC CR reg id */ - -hsmc_cr_rep: - bdz hsmc_cr_err /* branch if max retries hit*/ - - /*--------------------------------------------------------------------+ - | GET HSMCx_CRx value based on HSMC Control Register ID - +--------------------------------------------------------------------*/ -try_hsmc0_cr0: /* CHECK IF ID=HSMC0 CR0 REG*/ - cmpwi cr0,r11,0x0000 - bne cr0,try_hsmc0_cr1 - mfdcr r10,hsmc0_cr0 /* r11 <- HSMC0 CR0 value */ - b hsmc_cr_read - -try_hsmc0_cr1: /* CHECK IF ID=HSMC0 CR1 REG*/ - cmpwi cr0,r11,0x0001 - bne cr0,try_hsmc1_cr0 - mfdcr r10,hsmc0_cr1 /* r10 <- HSMC0 CR1 value */ - b hsmc_cr_read - -try_hsmc1_cr0: /* CHECK IF ID=HSMC1 CR0 REG*/ - cmpwi cr0,r11,0x0002 - bne cr0,try_hsmc1_cr1 - mfdcr r10,hsmc1_cr0 /* r10 <- HSMC1 CR0 value */ - b hsmc_cr_read - -try_hsmc1_cr1: /* CHECK IF ID=HSMC1 CR1 REG*/ - cmpwi cr0,r11,0x0003 - bne cr0,hsmc_cr_err - mfdcr r10,hsmc1_cr1 /* r10 <- HSMC1 CR1 value */ - - /*--------------------------------------------------------------------+ - | Check if HSMC CR register was reset after command execution - +--------------------------------------------------------------------*/ -hsmc_cr_read: - lis r12,0x000F /* create "AND" mask */ - ori r12,r12,0x8000 - and. r10,r10,r12 /* r10 <- HSMC CR bits 12-16*/ - bne cr0,hsmc_cr_rep /* wait for bits to reset */ - li r3,0 /* set return code = success*/ - b hsmc_cr_done - -hsmc_cr_err: /* ERROR: SDRAM didn't reset*/ - li r3,-1 /* set RC=unsuccessful */ - -hsmc_cr_done: - blr - -#if 0 -/****************************************************************************** -| -| Routine: GCS_CSPD_LOOKUP -| -| Purpose: Uses the number of 13.5 Mhz clock ticks found after executing -| the branch instruction time loop to look-up the CPU Core Speed -| in the Core Speed Look-up Table. -| -| Parameters: R3 = Address of Bus Speed -| R4 = Address of Core Speed -| R5 = Number of 13.5 Mhz clock ticks found in time loop. -| R6 = Pointer to Core-Speed Look-Up Table -| -| Returns: (R3) = >0: Bus Speed. -| 0: Bus Speed not found in Look-Up Table. -| (R4) = >0: Core Speed. -| 0: Core Speed not found in Look-Up Table. -| -| Note: Core Speed = Bus Speed * Mult Factor (1-4x). -| -******************************************************************************/ -gcs_cspd_lookup: - - li r9,1 /* r9 <- core speed mult */ - /*--------------------------------------------------------------------+ - | Get theoritical number 13.5 Mhz ticks for a given Bus Speed from - | Look-up Table. Check all mult factors to determine if calculated - | value matches theoretical value (within a tolerance). - +--------------------------------------------------------------------*/ -gcs_cspd_loop: - lwz r10,0(r6) /* r10 <- no. ticks from LUT*/ - divw r10,r10,r9 /* r10 <- div mult (1-4x) */ - subi r11,r10,GCS_CTICK_TOL /* r11 <- no. tks low range */ - addi r12,r10,GCS_CTICK_TOL /* r12 <- no. tks high range*/ - - cmpw cr0,r5,r11 /* calc value within range? */ - blt gcs_cspd_retry /* less than low range */ - cmpw cr0,r5,r12 - bgt gcs_cspd_retry /* greater than high range */ - b gcs_cspd_fnd /* calc value within range */ - - /*--------------------------------------------------------------------+ - | SO FAR CORE SPEED NOT FOUND: Check next mult factor - +--------------------------------------------------------------------*/ -gcs_cspd_retry: - addi r9,r9,1 /* bump mult factor (1-4x) */ - cmpwi cr0,r9,GCS_NMULT - ble gcs_cspd_loop - - /*--------------------------------------------------------------------+ - | SO FAR CORE SPEED NOT FOUND: Point at next Bus Speed in LUT - +--------------------------------------------------------------------*/ - li r9,1 /* reset mult factor */ - addi r6,r6,GCS_TROW_BYTES /* point at next table entry*/ - lwz r10,0(r6) - cmpwi cr0,r10,0 /* check for EOT flag */ - bne gcs_cspd_loop - - /*--------------------------------------------------------------------+ - | COMPUTE CORE SPEED AND GET BUS SPEED FROM LOOK-UP TABLE - +--------------------------------------------------------------------*/ -gcs_cspd_fnd: - lwz r5,4(r6) /* r5 <- Bus Speed in LUT */ - mullw r6,r5,r9 /* r6 <- Core speed */ - stw r5,0(r3) /* (r3) <- Bus Speed */ - stw r6,0(r4) /* (r4) <- Core Speed */ - - blr -#endif |