2 * Board specific setup info
4 * (C) Copyright 2004-2006
5 * Texas Instruments, <www.ti.com>
6 * Richard Woodruff <r-woodruff2@ti.com>
8 * See file CREDITS for list of people who contributed to this
11 * This program is free software; you can redistribute it and/or
12 * modify it under the terms of the GNU General Public License as
13 * published by the Free Software Foundation; either version 2 of
14 * the License, or (at your option) any later version.
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
28 #include <asm/arch/cpu.h>
29 #include <asm/arch/mem.h>
30 #include <asm/arch/clocks.h>
33 .word TEXT_BASE /* sdram load addr from config.mk */
35 #if !defined(CFG_NAND_BOOT) && !defined(CFG_NAND_BOOT)
36 /**************************************************************************
37 * cpy_clk_code: relocates clock code into SRAM where its safer to execute
38 * R1 = SRAM destination address.
39 *************************************************************************/
42 /* Copy DPLL code into SRAM */
43 adr r0, go_to_speed /* get addr of clock setting code */
44 mov r2, #384 /* r2 size to copy (div by 32 bytes) */
45 mov r1, r1 /* r1 <- dest address (passed in) */
46 add r2, r2, r0 /* r2 <- source end address */
48 ldmia r0!, {r3-r10} /* copy from source address [r0] */
49 stmia r1!, {r3-r10} /* copy to target address [r1] */
50 cmp r0, r2 /* until source end address [r2] */
52 mov pc, lr /* back to caller */
54 /* ****************************************************************************
55 * NOTE: 3430 X-loader currently does not use this code.
56 * It could be removed its is kept for compatabily with u-boot.
58 * go_to_speed: -Moves to bypass, -Commits clock dividers, -puts dpll at speed
59 * -executed from SRAM.
60 * R0 = CM_CLKEN_PLL-bypass value
61 * R1 = CM_CLKSEL1_PLL-m, n, and divider values
62 * R2 = CM_CLKSEL_CORE-divider values
63 * R3 = CM_IDLEST_CKGEN - addr dpll lock wait
65 * Note: If core unlocks/relocks and SDRAM is running fast already it gets
66 * confused. A reset of the controller gets it back. Taking away its
67 * L3 when its not in self refresh seems bad for it. Normally, this code
68 * runs from flash before SDR is init so that should be ok.
69 ******************************************************************************/
74 /* move into fast relock bypass */
78 ldr r5, [r3] /* get status */
79 and r5, r5, #0x1 /* isolate core status */
80 cmp r5, #0x1 /* still locked? */
81 beq wait1 /* if lock, loop */
83 /* set new dpll dividers _after_ in bypass */
85 str r1, [r5] /* set m, n, m2 */
87 str r2, [r5] /* set l3/l4/.. dividers*/
88 ldr r5, pll_div_add3 /* wkup */
89 ldr r2, pll_div_val3 /* rsm val */
91 ldr r5, pll_div_add4 /* gfx */
94 ldr r5, pll_div_add5 /* emu */
98 /* now prepare GPMC (flash) for new dpll speed */
99 /* flash needs to be stable when we jump back to it */
100 ldr r5, flash_cfg3_addr
101 ldr r2, flash_cfg3_val
103 ldr r5, flash_cfg4_addr
104 ldr r2, flash_cfg4_val
106 ldr r5, flash_cfg5_addr
107 ldr r2, flash_cfg5_val
109 ldr r5, flash_cfg1_addr
111 orr r2, r2, #0x3 /* up gpmc divider */
114 /* lock DPLL3 and wait a bit */
115 orr r0, r0, #0x7 /* set up for lock mode */
116 str r0, [r4] /* lock */
117 nop /* ARM slow at this point working at sys_clk */
122 ldr r5, [r3] /* get status */
123 and r5, r5, #0x1 /* isolate core status */
124 cmp r5, #0x1 /* still locked? */
125 bne wait2 /* if lock, loop */
131 mov pc, lr /* back to caller, locked */
133 _go_to_speed: .word go_to_speed
135 /* these constants need to be close for PIC code */
136 /* The Nor has to be in the Flash Base CS0 for this condition to happen */
138 .word (GPMC_CONFIG_CS0 + GPMC_CONFIG1)
140 .word (GPMC_CONFIG_CS0 + GPMC_CONFIG3)
142 .word STNOR_GPMC_CONFIG3
144 .word (GPMC_CONFIG_CS0 + GPMC_CONFIG4)
146 .word STNOR_GPMC_CONFIG4
148 .word STNOR_GPMC_CONFIG5
150 .word (GPMC_CONFIG_CS0 + GPMC_CONFIG5)
160 .word (WKUP_RSM << 1)
175 str ip, [sp] /* stash old link register */
176 mov ip, lr /* save link reg across call */
177 bl s_init /* go setup pll,mux,memory */
178 ldr ip, [sp] /* restore save ip */
179 mov lr, ip /* restore link reg */
181 /* back to arch calling code */
184 /* the literal pools origin */
190 .word LOW_LEVEL_SRAM_STACK
193 /* DPLL(1-4) PARAM TABLES */
194 /* Each of the tables has M, N, FREQSEL, M2 values defined for nominal
195 * OPP (1.2V). The fields are defined according to dpll_param struct(clock.c).
196 * The values are defined for all possible sysclk and for ES1 and ES2.
261 .globl get_mpu_dpll_param
263 adr r0, mpu_dpll_param
328 .globl get_iva_dpll_param
330 adr r0, iva_dpll_param
394 .globl get_core_dpll_param
396 adr r0, core_dpll_param
399 /* PER DPLL values are same for both ES1 and ES2 */
431 .globl get_per_dpll_param
433 adr r0, per_dpll_param