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+/*
+ * Board specific setup info
+ *
+ * (C) Copyright 2004-2006
+ * Texas Instruments, <www.ti.com>
+ * Richard Woodruff <r-woodruff2@ti.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 <config.h>
+#include <asm/arch/cpu.h>
+#include <asm/arch/mem.h>
+#include <asm/arch/clocks.h>
+
+_TEXT_BASE:
+ .word TEXT_BASE /* sdram load addr from config.mk */
+
+#if !defined(CFG_NAND_BOOT) && !defined(CFG_NAND_BOOT)
+/**************************************************************************
+ * cpy_clk_code: relocates clock code into SRAM where its safer to execute
+ * R1 = SRAM destination address.
+ *************************************************************************/
+.global cpy_clk_code
+ cpy_clk_code:
+ /* Copy DPLL code into SRAM */
+ adr r0, go_to_speed /* get addr of clock setting code */
+ mov r2, #384 /* r2 size to copy (div by 32 bytes) */
+ mov r1, r1 /* r1 <- dest address (passed in) */
+ add r2, r2, r0 /* r2 <- source end address */
+next2:
+ ldmia r0!, {r3-r10} /* copy from source address [r0] */
+ stmia r1!, {r3-r10} /* copy to target address [r1] */
+ cmp r0, r2 /* until source end address [r2] */
+ bne next2
+ mov pc, lr /* back to caller */
+
+/* ****************************************************************************
+ * NOTE: 3430 X-loader currently does not use this code.
+* It could be removed its is kept for compatabily with u-boot.
+ *
+ * go_to_speed: -Moves to bypass, -Commits clock dividers, -puts dpll at speed
+ * -executed from SRAM.
+ * R0 = CM_CLKEN_PLL-bypass value
+ * R1 = CM_CLKSEL1_PLL-m, n, and divider values
+ * R2 = CM_CLKSEL_CORE-divider values
+ * R3 = CM_IDLEST_CKGEN - addr dpll lock wait
+ *
+ * Note: If core unlocks/relocks and SDRAM is running fast already it gets
+ * confused. A reset of the controller gets it back. Taking away its
+ * L3 when its not in self refresh seems bad for it. Normally, this code
+ * runs from flash before SDR is init so that should be ok.
+ ******************************************************************************/
+.global go_to_speed
+ go_to_speed:
+ stmfd sp!, {r4-r6}
+
+ /* move into fast relock bypass */
+ ldr r4, pll_ctl_add
+ str r0, [r4]
+wait1:
+ ldr r5, [r3] /* get status */
+ and r5, r5, #0x1 /* isolate core status */
+ cmp r5, #0x1 /* still locked? */
+ beq wait1 /* if lock, loop */
+
+ /* set new dpll dividers _after_ in bypass */
+ ldr r5, pll_div_add1
+ str r1, [r5] /* set m, n, m2 */
+ ldr r5, pll_div_add2
+ str r2, [r5] /* set l3/l4/.. dividers*/
+ ldr r5, pll_div_add3 /* wkup */
+ ldr r2, pll_div_val3 /* rsm val */
+ str r2, [r5]
+ ldr r5, pll_div_add4 /* gfx */
+ ldr r2, pll_div_val4
+ str r2, [r5]
+ ldr r5, pll_div_add5 /* emu */
+ ldr r2, pll_div_val5
+ str r2, [r5]
+
+ /* now prepare GPMC (flash) for new dpll speed */
+ /* flash needs to be stable when we jump back to it */
+ ldr r5, flash_cfg3_addr
+ ldr r2, flash_cfg3_val
+ str r2, [r5]
+ ldr r5, flash_cfg4_addr
+ ldr r2, flash_cfg4_val
+ str r2, [r5]
+ ldr r5, flash_cfg5_addr
+ ldr r2, flash_cfg5_val
+ str r2, [r5]
+ ldr r5, flash_cfg1_addr
+ ldr r2, [r5]
+ orr r2, r2, #0x3 /* up gpmc divider */
+ str r2, [r5]
+
+ /* lock DPLL3 and wait a bit */
+ orr r0, r0, #0x7 /* set up for lock mode */
+ str r0, [r4] /* lock */
+ nop /* ARM slow at this point working at sys_clk */
+ nop
+ nop
+ nop
+wait2:
+ ldr r5, [r3] /* get status */
+ and r5, r5, #0x1 /* isolate core status */
+ cmp r5, #0x1 /* still locked? */
+ bne wait2 /* if lock, loop */
+ nop
+ nop
+ nop
+ nop
+ ldmfd sp!, {r4-r6}
+ mov pc, lr /* back to caller, locked */
+
+_go_to_speed: .word go_to_speed
+
+/* these constants need to be close for PIC code */
+/* The Nor has to be in the Flash Base CS0 for this condition to happen */
+flash_cfg1_addr:
+ .word (GPMC_CONFIG_CS0 + GPMC_CONFIG1)
+flash_cfg3_addr:
+ .word (GPMC_CONFIG_CS0 + GPMC_CONFIG3)
+flash_cfg3_val:
+ .word STNOR_GPMC_CONFIG3
+flash_cfg4_addr:
+ .word (GPMC_CONFIG_CS0 + GPMC_CONFIG4)
+flash_cfg4_val:
+ .word STNOR_GPMC_CONFIG4
+flash_cfg5_val:
+ .word STNOR_GPMC_CONFIG5
+flash_cfg5_addr:
+ .word (GPMC_CONFIG_CS0 + GPMC_CONFIG5)
+pll_ctl_add:
+ .word CM_CLKEN_PLL
+pll_div_add1:
+ .word CM_CLKSEL1_PLL
+pll_div_add2:
+ .word CM_CLKSEL_CORE
+pll_div_add3:
+ .word CM_CLKSEL_WKUP
+pll_div_val3:
+ .word (WKUP_RSM << 1)
+pll_div_add4:
+ .word CM_CLKSEL_GFX
+pll_div_val4:
+ .word (GFX_DIV << 0)
+pll_div_add5:
+ .word CM_CLKSEL1_EMU
+pll_div_val5:
+ .word CLSEL1_EMU_VAL
+
+#endif
+
+.globl lowlevel_init
+lowlevel_init:
+ ldr sp, SRAM_STACK
+ str ip, [sp] /* stash old link register */
+ mov ip, lr /* save link reg across call */
+ bl s_init /* go setup pll,mux,memory */
+ ldr ip, [sp] /* restore save ip */
+ mov lr, ip /* restore link reg */
+
+ /* back to arch calling code */
+ mov pc, lr
+
+ /* the literal pools origin */
+ .ltorg
+
+REG_CONTROL_STATUS:
+ .word CONTROL_STATUS
+SRAM_STACK:
+ .word LOW_LEVEL_SRAM_STACK
+
+/* DPLL(1-4) PARAM TABLES */
+/* Each of the tables has M, N, FREQSEL, M2 values defined for nominal
+ * OPP (1.2V). The fields are defined according to dpll_param struct(clock.c).
+ * The values are defined for all possible sysclk and for ES1 and ES2.
+ */
+
+mpu_dpll_param:
+/* 12MHz */
+/* ES1 */
+.word 0x0FE,0x07,0x05,0x01
+/* ES2 */
+.word 0x0FA,0x05,0x07,0x01
+/* 3410 */
+.word 0x085,0x05,0x07,0x01
+
+/* 13MHz */
+/* ES1 */
+.word 0x17D,0x0C,0x03,0x01
+/* ES2 */
+.word 0x1F4,0x0C,0x03,0x01
+/* 3410 */
+.word 0x10A,0x0C,0x03,0x01
+
+/* 19.2MHz */
+/* ES1 */
+.word 0x179,0x12,0x04,0x01
+/* ES2 */
+.word 0x271,0x17,0x03,0x01
+/* 3410 */
+.word 0x14C,0x17,0x03,0x01
+
+/* 26MHz */
+/* ES1 */
+.word 0x17D,0x19,0x03,0x01
+/* ES2 */
+.word 0x0FA,0x0C,0x07,0x01
+/* 3410 */
+.word 0x085,0x0C,0x07,0x01
+
+/* 38.4MHz */
+/* ES1 */
+.word 0x1FA,0x32,0x03,0x01
+/* ES2 */
+.word 0x271,0x2F,0x03,0x01
+/* 3410 */
+.word 0x14C,0x2F,0x03,0x01
+
+
+.globl get_mpu_dpll_param
+get_mpu_dpll_param:
+ adr r0, mpu_dpll_param
+ mov pc, lr
+
+iva_dpll_param:
+/* 12MHz */
+/* ES1 */
+.word 0x07D,0x05,0x07,0x01
+/* ES2 */
+.word 0x0B4,0x05,0x07,0x01
+/* 3410 */
+.word 0x085,0x05,0x07,0x01
+
+/* 13MHz */
+/* ES1 */
+.word 0x0FA,0x0C,0x03,0x01
+/* ES2 */
+.word 0x168,0x0C,0x03,0x01
+/* 3410 */
+.word 0x10A,0x0C,0x03,0x01
+
+/* 19.2MHz */
+/* ES1 */
+.word 0x082,0x09,0x07,0x01
+/* ES2 */
+.word 0x0E1,0x0B,0x06,0x01
+/* 3410 */
+.word 0x14C,0x17,0x03,0x01
+
+/* 26MHz */
+/* ES1 */
+.word 0x07D,0x0C,0x07,0x01
+/* ES2 */
+.word 0x0B4,0x0C,0x07,0x01
+/* 3410 */
+.word 0x085,0x0C,0x07,0x01
+
+/* 38.4MHz */
+/* ES1 */
+.word 0x13F,0x30,0x03,0x01
+/* ES2 */
+.word 0x0E1,0x17,0x06,0x01
+/* 3410 */
+.word 0x14C,0x2F,0x03,0x01
+
+
+.globl get_iva_dpll_param
+get_iva_dpll_param:
+ adr r0, iva_dpll_param
+ mov pc, lr
+
+/* Core DPLL targets for L3 at 166 & L133 */
+core_dpll_param:
+/* 12MHz */
+/* ES1 */
+.word M_12_ES1,M_12_ES1,FSL_12_ES1,M2_12_ES1
+/* ES2 */
+.word M_12,N_12,FSEL_12,M2_12
+/* 3410 */
+.word M_12,N_12,FSEL_12,M2_12
+
+/* 13MHz */
+/* ES1 */
+.word M_13_ES1,N_13_ES1,FSL_13_ES1,M2_13_ES1
+/* ES2 */
+.word M_13,N_13,FSEL_13,M2_13
+/* 3410 */
+.word M_13,N_13,FSEL_13,M2_13
+
+/* 19.2MHz */
+/* ES1 */
+.word M_19p2_ES1,N_19p2_ES1,FSL_19p2_ES1,M2_19p2_ES1
+/* ES2 */
+.word M_19p2,N_19p2,FSEL_19p2,M2_19p2
+/* 3410 */
+.word M_19p2,N_19p2,FSEL_19p2,M2_19p2
+
+/* 26MHz */
+/* ES1 */
+.word M_26_ES1,N_26_ES1,FSL_26_ES1,M2_26_ES1
+/* ES2 */
+.word M_26,N_26,FSEL_26,M2_26
+/* 3410 */
+.word M_26,N_26,FSEL_26,M2_26
+
+/* 38.4MHz */
+/* ES1 */
+.word M_38p4_ES1,N_38p4_ES1,FSL_38p4_ES1,M2_38p4_ES1
+/* ES2 */
+.word M_38p4,N_38p4,FSEL_38p4,M2_38p4
+/* 3410 */
+.word M_38p4,N_38p4,FSEL_38p4,M2_38p4
+
+.globl get_core_dpll_param
+get_core_dpll_param:
+ adr r0, core_dpll_param
+ mov pc, lr
+
+/* PER DPLL values are same for both ES1 and ES2 */
+per_dpll_param:
+/* 12MHz */
+.word 0xD8,0x05,0x07,0x09
+
+/* 13MHz */
+.word 0x1B0,0x0C,0x03,0x09
+
+/* 19.2MHz */
+.word 0xE1,0x09,0x07,0x09
+
+/* 26MHz */
+.word 0xD8,0x0C,0x07,0x09
+
+/* 38.4MHz */
+.word 0xE1,0x13,0x07,0x09
+
+.globl get_per_dpll_param
+get_per_dpll_param:
+ adr r0, per_dpll_param
+ mov pc, lr
+
generated by cgit v1.1 at 2024-04-16 15:54:18 +0000