adulau/aha
1
0
Fork 0
mirror of https://github.com/adulau/aha.git synced 2024-12-29 12:16:20 +00:00
Code Issues Projects Releases Packages Wiki Activity

ARM: OMAP: SRAM: Split sram24xx.S into sram242x.S and sram243x.S

Browse source 
Split sram24xx.S into sram242x.S and sram243x.S

Signed-off-by: Tony Lindgren <tony@atomide.com>
This commit is contained in:
Tony Lindgren 2008-07-03 12:24:38 +03:00
parent 373a67021d
commit c2d43e39c7
9 changed files with 603 additions and 103 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

6
arch/arm/mach-omap1/sram.S
View file

@ -18,7 +18,7 @@
/*
* Reprograms ULPD and CKCTL.
*/
ENTRY(sram_reprogram_clock)
ENTRY(omap1_sram_reprogram_clock)
stmfd sp!, {r0 - r12, lr} @ save registers on stack
mov r2, #IO_ADDRESS(DPLL_CTL) & 0xff000000
@ -53,5 +53,5 @@ lock: ldrh r4, [r2], #0 @ read back dpll value
out:
ldmfd sp!, {r0 - r12, pc} @ restore regs and return
ENTRY(sram_reprogram_clock_sz)
.word . - sram_reprogram_clock
ENTRY(omap1_sram_reprogram_clock_sz)
.word . - omap1_sram_reprogram_clock

6
arch/arm/mach-omap2/Makefile
View file

@ -3,9 +3,13 @@
#
# Common support
obj-y := irq.o id.o io.o sram242x.o memory.o control.o prcm.o clock.o mux.o \
obj-y := irq.o id.o io.o memory.o control.o prcm.o clock.o mux.o \
devices.o serial.o gpmc.o timer-gp.o
# Functions loaded to SRAM
obj-$(CONFIG_ARCH_OMAP2420) += sram242x.o
obj-$(CONFIG_ARCH_OMAP2430) += sram243x.o
# Power Management
obj-$(CONFIG_PM) += pm.o sleep.o

3
arch/arm/mach-omap2/clock.c
View file

@ -603,7 +603,8 @@ int omap2_clksel_set_rate(struct clk *clk, unsigned long rate)
clk->rate = clk->parent->rate / new_div;
if (clk->flags & DELAYED_APP && cpu_is_omap24xx()) {
__raw_writel(OMAP24XX_VALID_CONFIG, OMAP24XX_PRCM_CLKCFG_CTRL);
prm_write_mod_reg(OMAP24XX_VALID_CONFIG,
OMAP24XX_GR_MOD, OMAP24XX_PRCM_CLKCFG_CTRL_OFFSET);
wmb();
}

1
arch/arm/mach-omap2/prcm-common.h
View file

@ -32,6 +32,7 @@
/* Chip-specific module offsets */
#define OMAP24XX_GR_MOD OCP_MOD
#define OMAP24XX_DSP_MOD 0x800
#define OMAP2430_MDM_MOD 0xc00

18
arch/arm/mach-omap2/prm.h
View file

@ -38,13 +38,29 @@
*
*/
/* Global 24xx registers in GR_MOD (Same as OCP_MOD for 24xx) */
#define OMAP24XX_PRCM_VOLTCTRL_OFFSET 0x0050
#define OMAP24XX_PRCM_CLKCFG_CTRL_OFFSET 0x0080
/* 242x GR_MOD registers, use these only for assembly code */
#define OMAP242X_PRCM_VOLTCTRL OMAP2420_PRM_REGADDR(OMAP24XX_GR_MOD, \
OMAP24XX_PRCM_VOLTCTRL_OFFSET)
#define OMAP242X_PRCM_CLKCFG_CTRL OMAP2420_PRM_REGADDR(OMAP24XX_GR_MOD, \
OMAP24XX_PRCM_CLKCFG_CTRL_OFFSET)
/* 243x GR_MOD registers, use these only for assembly code */
#define OMAP243X_PRCM_VOLTCTRL OMAP2430_PRM_REGADDR(OMAP24XX_GR_MOD, \
OMAP24XX_PRCM_VOLTCTRL_OFFSET)
#define OMAP243X_PRCM_CLKCFG_CTRL OMAP2430_PRM_REGADDR(OMAP24XX_GR_MOD, \
OMAP24XX_PRCM_CLKCFG_CTRL_OFFSET)
/* These will disappear */
#define OMAP24XX_PRCM_REVISION OMAP_PRM_REGADDR(OCP_MOD, 0x0000)
#define OMAP24XX_PRCM_SYSCONFIG OMAP_PRM_REGADDR(OCP_MOD, 0x0010)
#define OMAP24XX_PRCM_IRQSTATUS_MPU OMAP_PRM_REGADDR(OCP_MOD, 0x0018)
#define OMAP24XX_PRCM_IRQENABLE_MPU OMAP_PRM_REGADDR(OCP_MOD, 0x001c)
#define OMAP24XX_PRCM_VOLTCTRL OMAP_PRM_REGADDR(OCP_MOD, 0x0050)
#define OMAP24XX_PRCM_VOLTST OMAP_PRM_REGADDR(OCP_MOD, 0x0054)
#define OMAP24XX_PRCM_CLKSRC_CTRL OMAP_PRM_REGADDR(OCP_MOD, 0x0060)
#define OMAP24XX_PRCM_CLKOUT_CTRL OMAP_PRM_REGADDR(OCP_MOD, 0x0070)

105
arch/arm/mach-omap2/sram242x.S
View file

@ -1,5 +1,5 @@
/*
* linux/arch/arm/mach-omap2/sram-fn.S
* linux/arch/arm/mach-omap2/sram242x.S
*
* Omap2 specific functions that need to be run in internal SRAM
*
@ -27,22 +27,20 @@
#include <asm/arch/io.h>
#include <asm/hardware.h>
#include "sdrc.h"
#include "prm.h"
#include "cm.h"
#define TIMER_32KSYNCT_CR_V IO_ADDRESS(OMAP2420_32KSYNCT_BASE + 0x010)
#include "sdrc.h"
.text
ENTRY(sram_ddr_init)
ENTRY(omap242x_sram_ddr_init)
stmfd sp!, {r0 - r12, lr} @ save registers on stack
mov r12, r2 @ capture CS1 vs CS0
mov r8, r3 @ capture force parameter
/* frequency shift down */
ldr r2, cm_clksel2_pll @ get address of dpllout reg
ldr r2, omap242x_sdi_cm_clksel2_pll @ get address of dpllout reg
mov r3, #0x1 @ value for 1x operation
str r3, [r2] @ go to L1-freq operation
@ -51,7 +49,7 @@ ENTRY(sram_ddr_init)
bl voltage_shift @ go drop voltage
/* dll lock mode */
ldr r11, sdrc_dlla_ctrl @ addr of dlla ctrl
ldr r11, omap242x_sdi_sdrc_dlla_ctrl @ addr of dlla ctrl
ldr r10, [r11] @ get current val
cmp r12, #0x1 @ cs1 base (2422 es2.05/1)
addeq r11, r11, #0x8 @ if cs1 base, move to DLLB
@ -102,7 +100,7 @@ i_dll_delay:
* wait for it to finish, use 32k sync counter, 1tick=31uS.
*/
voltage_shift:
ldr r4, prcm_voltctrl @ get addr of volt ctrl.
ldr r4, omap242x_sdi_prcm_voltctrl @ get addr of volt ctrl.
ldr r5, [r4] @ get value.
ldr r6, prcm_mask_val @ get value of mask
and r5, r5, r6 @ apply mask to clear bits
@ -112,7 +110,7 @@ voltage_shift:
orr r5, r5, r3 @ build value for force
str r5, [r4] @ Force transition to L1
ldr r3, timer_32ksynct_cr @ get addr of counter
ldr r3, omap242x_sdi_timer_32ksynct_cr @ get addr of counter
ldr r5, [r3] @ get value
add r5, r5, #0x3 @ give it at most 93uS
volt_delay:
@ -121,32 +119,31 @@ volt_delay:
bhi volt_delay @ not yet->branch
mov pc, lr @ back to caller.
/* relative load constants */
cm_clksel2_pll:
omap242x_sdi_cm_clksel2_pll:
.word OMAP2420_CM_REGADDR(PLL_MOD, CM_CLKSEL2)
sdrc_dlla_ctrl:
omap242x_sdi_sdrc_dlla_ctrl:
.word OMAP242X_SDRC_REGADDR(SDRC_DLLA_CTRL)
prcm_voltctrl:
.word OMAP2420_PRM_REGADDR(OCP_MOD, 0x50)
omap242x_sdi_prcm_voltctrl:
.word OMAP242X_PRCM_VOLTCTRL
prcm_mask_val:
.word 0xFFFF3FFC
timer_32ksynct_cr:
.word TIMER_32KSYNCT_CR_V
ENTRY(sram_ddr_init_sz)
.word . - sram_ddr_init
omap242x_sdi_timer_32ksynct_cr:
.word IO_ADDRESS(OMAP2_32KSYNCT_BASE + 0x010)
ENTRY(omap242x_sram_ddr_init_sz)
.word . - omap242x_sram_ddr_init
/*
* Reprograms memory timings.
* r0 = [PRCM_FULL | PRCM_HALF] r1 = SDRC_DLLA_CTRL value r2 = [DDR | SDR]
* PRCM_FULL = 2, PRCM_HALF = 1, DDR = 1, SDR = 0
*/
ENTRY(sram_reprogram_sdrc)
ENTRY(omap242x_sram_reprogram_sdrc)
stmfd sp!, {r0 - r10, lr} @ save registers on stack
mov r3, #0x0 @ clear for mrc call
mcr p15, 0, r3, c7, c10, 4 @ memory barrier, finish ARM SDR/DDR
nop
nop
ldr r6, ddr_sdrc_rfr_ctrl @ get addr of refresh reg
ldr r6, omap242x_srs_sdrc_rfr_ctrl @ get addr of refresh reg
ldr r5, [r6] @ get value
mov r5, r5, lsr #8 @ isolate rfr field and drop burst
@ -160,7 +157,7 @@ ENTRY(sram_reprogram_sdrc)
movne r5, r5, lsl #1 @ mult by 2 if to full
mov r5, r5, lsl #8 @ put rfr field back into place
add r5, r5, #0x1 @ turn on burst of 1
ldr r4, ddr_cm_clksel2_pll @ get address of out reg
ldr r4, omap242x_srs_cm_clksel2_pll @ get address of out reg
ldr r3, [r4] @ get curr value
orr r3, r3, #0x3
bic r3, r3, #0x3 @ clear lower bits
@ -181,7 +178,7 @@ ENTRY(sram_reprogram_sdrc)
bne freq_out @ leave if SDR, no DLL function
/* With DDR, we need to take care of the DLL for the frequency change */
ldr r2, ddr_sdrc_dlla_ctrl @ addr of dlla ctrl
ldr r2, omap242x_srs_sdrc_dlla_ctrl @ addr of dlla ctrl
str r1, [r2] @ write out new SDRC_DLLA_CTRL
add r2, r2, #0x8 @ addr to SDRC_DLLB_CTRL
str r1, [r2] @ commit to SDRC_DLLB_CTRL
@ -197,7 +194,7 @@ freq_out:
* wait for it to finish, use 32k sync counter, 1tick=31uS.
*/
voltage_shift_c:
ldr r10, ddr_prcm_voltctrl @ get addr of volt ctrl
ldr r10, omap242x_srs_prcm_voltctrl @ get addr of volt ctrl
ldr r8, [r10] @ get value
ldr r7, ddr_prcm_mask_val @ get value of mask
and r8, r8, r7 @ apply mask to clear bits
@ -207,7 +204,7 @@ voltage_shift_c:
orr r8, r8, r7 @ build value for force
str r8, [r10] @ Force transition to L1
ldr r10, ddr_timer_32ksynct @ get addr of counter
ldr r10, omap242x_srs_timer_32ksynct @ get addr of counter
ldr r8, [r10] @ get value
add r8, r8, #0x2 @ give it at most 62uS (min 31+)
volt_delay_c:
@ -216,39 +213,39 @@ volt_delay_c:
bhi volt_delay_c @ not yet->branch
mov pc, lr @ back to caller
ddr_cm_clksel2_pll:
omap242x_srs_cm_clksel2_pll:
.word OMAP2420_CM_REGADDR(PLL_MOD, CM_CLKSEL2)
ddr_sdrc_dlla_ctrl:
omap242x_srs_sdrc_dlla_ctrl:
.word OMAP242X_SDRC_REGADDR(SDRC_DLLA_CTRL)
ddr_sdrc_rfr_ctrl:
omap242x_srs_sdrc_rfr_ctrl:
.word OMAP242X_SDRC_REGADDR(SDRC_RFR_CTRL_0)
ddr_prcm_voltctrl:
.word OMAP2420_PRM_REGADDR(OCP_MOD, 0x50)
omap242x_srs_prcm_voltctrl:
.word OMAP242X_PRCM_VOLTCTRL
ddr_prcm_mask_val:
.word 0xFFFF3FFC
ddr_timer_32ksynct:
.word TIMER_32KSYNCT_CR_V
omap242x_srs_timer_32ksynct:
.word IO_ADDRESS(OMAP2_32KSYNCT_BASE + 0x010)
ENTRY(sram_reprogram_sdrc_sz)
.word . - sram_reprogram_sdrc
ENTRY(omap242x_sram_reprogram_sdrc_sz)
.word . - omap242x_sram_reprogram_sdrc
/*
* Set dividers and pll. Also recalculate DLL value for DDR and unlock mode.
*/
ENTRY(sram_set_prcm)
ENTRY(omap242x_sram_set_prcm)
stmfd sp!, {r0-r12, lr} @ regs to stack
adr r4, pbegin @ addr of preload start
adr r8, pend @ addr of preload end
mcrr p15, 1, r8, r4, c12 @ preload into icache
pbegin:
/* move into fast relock bypass */
ldr r8, pll_ctl @ get addr
ldr r8, omap242x_ssp_pll_ctl @ get addr
ldr r5, [r8] @ get val
mvn r6, #0x3 @ clear mask
and r5, r5, r6 @ clear field
orr r7, r5, #0x2 @ fast relock val
str r7, [r8] @ go to fast relock
ldr r4, pll_stat @ addr of stat
ldr r4, omap242x_ssp_pll_stat @ addr of stat
block:
/* wait for bypass */
ldr r8, [r4] @ stat value
@ -257,10 +254,10 @@ block:
bne block @ loop if not
/* set new dpll dividers _after_ in bypass */
ldr r4, pll_div @ get addr
ldr r4, omap242x_ssp_pll_div @ get addr
str r0, [r4] @ set dpll ctrl val
ldr r4, set_config @ get addr
ldr r4, omap242x_ssp_set_config @ get addr
mov r8, #1 @ valid cfg msk
str r8, [r4] @ make dividers take
@ -274,8 +271,8 @@ wait_a_bit:
beq pend @ jump over dpll relock
/* relock DPLL with new vals */
ldr r5, pll_stat @ get addr
ldr r4, pll_ctl @ get addr
ldr r5, omap242x_ssp_pll_stat @ get addr
ldr r4, omap242x_ssp_pll_ctl @ get addr
orr r8, r7, #0x3 @ val for lock dpll
str r8, [r4] @ set val
mov r0, #1000 @ dead spin a bit
@ -289,9 +286,9 @@ wait_lock:
bne wait_lock @ wait if not
pend:
/* update memory timings & briefly lock dll */
ldr r4, sdrc_rfr @ get addr
ldr r4, omap242x_ssp_sdrc_rfr @ get addr
str r1, [r4] @ update refresh timing
ldr r11, dlla_ctrl @ get addr of DLLA ctrl
ldr r11, omap242x_ssp_dlla_ctrl @ get addr of DLLA ctrl
ldr r10, [r11] @ get current val
mvn r9, #0x4 @ mask to get clear bit2
and r10, r10, r9 @ clear bit2 for lock mode
@ -307,18 +304,18 @@ wait_dll_lock:
nop
ldmfd sp!, {r0-r12, pc} @ restore regs and return
set_config:
.word OMAP2420_PRM_REGADDR(OCP_MOD, 0x80)
pll_ctl:
.word OMAP2420_CM_REGADDR(PLL_MOD, CM_FCLKEN1)
pll_stat:
.word OMAP2420_CM_REGADDR(PLL_MOD, CM_IDLEST1)
pll_div:
.word OMAP2420_CM_REGADDR(PLL_MOD, CM_CLKSEL)
sdrc_rfr:
omap242x_ssp_set_config:
.word OMAP242X_PRCM_CLKCFG_CTRL
omap242x_ssp_pll_ctl:
.word OMAP2420_CM_REGADDR(PLL_MOD, CM_CLKEN)
omap242x_ssp_pll_stat:
.word OMAP2420_CM_REGADDR(PLL_MOD, CM_IDLEST)
omap242x_ssp_pll_div:
.word OMAP2420_CM_REGADDR(PLL_MOD, CM_CLKSEL1)
omap242x_ssp_sdrc_rfr:
.word OMAP242X_SDRC_REGADDR(SDRC_RFR_CTRL_0)
dlla_ctrl:
omap242x_ssp_dlla_ctrl:
.word OMAP242X_SDRC_REGADDR(SDRC_DLLA_CTRL)
ENTRY(sram_set_prcm_sz)
.word . - sram_set_prcm
ENTRY(omap242x_sram_set_prcm_sz)
.word . - omap242x_sram_set_prcm

321
arch/arm/mach-omap2/sram243x.S Normal file
View file

@ -0,0 +1,321 @@
/*
* linux/arch/arm/mach-omap2/sram243x.S
*
* Omap2 specific functions that need to be run in internal SRAM
*
* (C) Copyright 2004
* Texas Instruments, <www.ti.com>
* Richard Woodruff <r-woodruff2@ti.com>
*
* 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 <linux/linkage.h>
#include <asm/assembler.h>
#include <asm/arch/io.h>
#include <asm/hardware.h>
#include "prm.h"
#include "cm.h"
#include "sdrc.h"
.text
ENTRY(omap243x_sram_ddr_init)
stmfd sp!, {r0 - r12, lr} @ save registers on stack
mov r12, r2 @ capture CS1 vs CS0
mov r8, r3 @ capture force parameter
/* frequency shift down */
ldr r2, omap243x_sdi_cm_clksel2_pll @ get address of dpllout reg
mov r3, #0x1 @ value for 1x operation
str r3, [r2] @ go to L1-freq operation
/* voltage shift down */
mov r9, #0x1 @ set up for L1 voltage call
bl voltage_shift @ go drop voltage
/* dll lock mode */
ldr r11, omap243x_sdi_sdrc_dlla_ctrl @ addr of dlla ctrl
ldr r10, [r11] @ get current val
cmp r12, #0x1 @ cs1 base (2422 es2.05/1)
addeq r11, r11, #0x8 @ if cs1 base, move to DLLB
mvn r9, #0x4 @ mask to get clear bit2
and r10, r10, r9 @ clear bit2 for lock mode.
orr r10, r10, #0x8 @ make sure DLL on (es2 bit pos)
orr r10, r10, #0x2 @ 90 degree phase for all below 133Mhz
str r10, [r11] @ commit to DLLA_CTRL
bl i_dll_wait @ wait for dll to lock
/* get dll value */
add r11, r11, #0x4 @ get addr of status reg
ldr r10, [r11] @ get locked value
/* voltage shift up */
mov r9, #0x0 @ shift back to L0-voltage
bl voltage_shift @ go raise voltage
/* frequency shift up */
mov r3, #0x2 @ value for 2x operation
str r3, [r2] @ go to L0-freq operation
/* reset entry mode for dllctrl */
sub r11, r11, #0x4 @ move from status to ctrl
cmp r12, #0x1 @ normalize if cs1 based
subeq r11, r11, #0x8 @ possibly back to DLLA
cmp r8, #0x1 @ if forced unlock exit
orreq r1, r1, #0x4 @ make sure exit with unlocked value
str r1, [r11] @ restore DLLA_CTRL high value
add r11, r11, #0x8 @ move to DLLB_CTRL addr
str r1, [r11] @ set value DLLB_CTRL
bl i_dll_wait @ wait for possible lock
/* set up for return, DDR should be good */
str r10, [r0] @ write dll_status and return counter
ldmfd sp!, {r0 - r12, pc} @ restore regs and return
/* ensure the DLL has relocked */
i_dll_wait:
mov r4, #0x800 @ delay DLL relock, min 0x400 L3 clocks
i_dll_delay:
subs r4, r4, #0x1
bne i_dll_delay
mov pc, lr
/*
* shift up or down voltage, use R9 as input to tell level.
* wait for it to finish, use 32k sync counter, 1tick=31uS.
*/
voltage_shift:
ldr r4, omap243x_sdi_prcm_voltctrl @ get addr of volt ctrl.
ldr r5, [r4] @ get value.
ldr r6, prcm_mask_val @ get value of mask
and r5, r5, r6 @ apply mask to clear bits
orr r5, r5, r9 @ bulld value for L0/L1-volt operation.
str r5, [r4] @ set up for change.
mov r3, #0x4000 @ get val for force
orr r5, r5, r3 @ build value for force
str r5, [r4] @ Force transition to L1
ldr r3, omap243x_sdi_timer_32ksynct_cr @ get addr of counter
ldr r5, [r3] @ get value
add r5, r5, #0x3 @ give it at most 93uS
volt_delay:
ldr r7, [r3] @ get timer value
cmp r5, r7 @ time up?
bhi volt_delay @ not yet->branch
mov pc, lr @ back to caller.
omap243x_sdi_cm_clksel2_pll:
.word OMAP2430_CM_REGADDR(PLL_MOD, CM_CLKSEL2)
omap243x_sdi_sdrc_dlla_ctrl:
.word OMAP243X_SDRC_REGADDR(SDRC_DLLA_CTRL)
omap243x_sdi_prcm_voltctrl:
.word OMAP243X_PRCM_VOLTCTRL
prcm_mask_val:
.word 0xFFFF3FFC
omap243x_sdi_timer_32ksynct_cr:
.word IO_ADDRESS(OMAP2_32KSYNCT_BASE + 0x010)
ENTRY(omap243x_sram_ddr_init_sz)
.word . - omap243x_sram_ddr_init
/*
* Reprograms memory timings.
* r0 = [PRCM_FULL | PRCM_HALF] r1 = SDRC_DLLA_CTRL value r2 = [DDR | SDR]
* PRCM_FULL = 2, PRCM_HALF = 1, DDR = 1, SDR = 0
*/
ENTRY(omap243x_sram_reprogram_sdrc)
stmfd sp!, {r0 - r10, lr} @ save registers on stack
mov r3, #0x0 @ clear for mrc call
mcr p15, 0, r3, c7, c10, 4 @ memory barrier, finish ARM SDR/DDR
nop
nop
ldr r6, omap243x_srs_sdrc_rfr_ctrl @ get addr of refresh reg
ldr r5, [r6] @ get value
mov r5, r5, lsr #8 @ isolate rfr field and drop burst
cmp r0, #0x1 @ going to half speed?
movne r9, #0x0 @ if up set flag up for pre up, hi volt
blne voltage_shift_c @ adjust voltage
cmp r0, #0x1 @ going to half speed (post branch link)
moveq r5, r5, lsr #1 @ divide by 2 if to half
movne r5, r5, lsl #1 @ mult by 2 if to full
mov r5, r5, lsl #8 @ put rfr field back into place
add r5, r5, #0x1 @ turn on burst of 1
ldr r4, omap243x_srs_cm_clksel2_pll @ get address of out reg
ldr r3, [r4] @ get curr value
orr r3, r3, #0x3
bic r3, r3, #0x3 @ clear lower bits
orr r3, r3, r0 @ new state value
str r3, [r4] @ set new state (pll/x, x=1 or 2)
nop
nop
moveq r9, #0x1 @ if speed down, post down, drop volt
bleq voltage_shift_c
mcr p15, 0, r3, c7, c10, 4 @ memory barrier
str r5, [r6] @ set new RFR_1 value
add r6, r6, #0x30 @ get RFR_2 addr
str r5, [r6] @ set RFR_2
nop
cmp r2, #0x1 @ (SDR or DDR) do we need to adjust DLL
bne freq_out @ leave if SDR, no DLL function
/* With DDR, we need to take care of the DLL for the frequency change */
ldr r2, omap243x_srs_sdrc_dlla_ctrl @ addr of dlla ctrl
str r1, [r2] @ write out new SDRC_DLLA_CTRL
add r2, r2, #0x8 @ addr to SDRC_DLLB_CTRL
str r1, [r2] @ commit to SDRC_DLLB_CTRL
mov r1, #0x2000 @ wait DLL relock, min 0x400 L3 clocks
dll_wait:
subs r1, r1, #0x1
bne dll_wait
freq_out:
ldmfd sp!, {r0 - r10, pc} @ restore regs and return
/*
* shift up or down voltage, use R9 as input to tell level.
* wait for it to finish, use 32k sync counter, 1tick=31uS.
*/
voltage_shift_c:
ldr r10, omap243x_srs_prcm_voltctrl @ get addr of volt ctrl
ldr r8, [r10] @ get value
ldr r7, ddr_prcm_mask_val @ get value of mask
and r8, r8, r7 @ apply mask to clear bits
orr r8, r8, r9 @ bulld value for L0/L1-volt operation.
str r8, [r10] @ set up for change.
mov r7, #0x4000 @ get val for force
orr r8, r8, r7 @ build value for force
str r8, [r10] @ Force transition to L1
ldr r10, omap243x_srs_timer_32ksynct @ get addr of counter
ldr r8, [r10] @ get value
add r8, r8, #0x2 @ give it at most 62uS (min 31+)
volt_delay_c:
ldr r7, [r10] @ get timer value
cmp r8, r7 @ time up?
bhi volt_delay_c @ not yet->branch
mov pc, lr @ back to caller
omap243x_srs_cm_clksel2_pll:
.word OMAP2430_CM_REGADDR(PLL_MOD, CM_CLKSEL2)
omap243x_srs_sdrc_dlla_ctrl:
.word OMAP243X_SDRC_REGADDR(SDRC_DLLA_CTRL)
omap243x_srs_sdrc_rfr_ctrl:
.word OMAP243X_SDRC_REGADDR(SDRC_RFR_CTRL_0)
omap243x_srs_prcm_voltctrl:
.word OMAP243X_PRCM_VOLTCTRL
ddr_prcm_mask_val:
.word 0xFFFF3FFC
omap243x_srs_timer_32ksynct:
.word IO_ADDRESS(OMAP2_32KSYNCT_BASE + 0x010)
ENTRY(omap243x_sram_reprogram_sdrc_sz)
.word . - omap243x_sram_reprogram_sdrc
/*
* Set dividers and pll. Also recalculate DLL value for DDR and unlock mode.
*/
ENTRY(omap243x_sram_set_prcm)
stmfd sp!, {r0-r12, lr} @ regs to stack
adr r4, pbegin @ addr of preload start
adr r8, pend @ addr of preload end
mcrr p15, 1, r8, r4, c12 @ preload into icache
pbegin:
/* move into fast relock bypass */
ldr r8, omap243x_ssp_pll_ctl @ get addr
ldr r5, [r8] @ get val
mvn r6, #0x3 @ clear mask
and r5, r5, r6 @ clear field
orr r7, r5, #0x2 @ fast relock val
str r7, [r8] @ go to fast relock
ldr r4, omap243x_ssp_pll_stat @ addr of stat
block:
/* wait for bypass */
ldr r8, [r4] @ stat value
and r8, r8, #0x3 @ mask for stat
cmp r8, #0x1 @ there yet
bne block @ loop if not
/* set new dpll dividers _after_ in bypass */
ldr r4, omap243x_ssp_pll_div @ get addr
str r0, [r4] @ set dpll ctrl val
ldr r4, omap243x_ssp_set_config @ get addr
mov r8, #1 @ valid cfg msk
str r8, [r4] @ make dividers take
mov r4, #100 @ dead spin a bit
wait_a_bit:
subs r4, r4, #1 @ dec loop
bne wait_a_bit @ delay done?
/* check if staying in bypass */
cmp r2, #0x1 @ stay in bypass?
beq pend @ jump over dpll relock
/* relock DPLL with new vals */
ldr r5, omap243x_ssp_pll_stat @ get addr
ldr r4, omap243x_ssp_pll_ctl @ get addr
orr r8, r7, #0x3 @ val for lock dpll
str r8, [r4] @ set val
mov r0, #1000 @ dead spin a bit
wait_more:
subs r0, r0, #1 @ dec loop
bne wait_more @ delay done?
wait_lock:
ldr r8, [r5] @ get lock val
and r8, r8, #3 @ isolate field
cmp r8, #2 @ locked?
bne wait_lock @ wait if not
pend:
/* update memory timings & briefly lock dll */
ldr r4, omap243x_ssp_sdrc_rfr @ get addr
str r1, [r4] @ update refresh timing
ldr r11, omap243x_ssp_dlla_ctrl @ get addr of DLLA ctrl
ldr r10, [r11] @ get current val
mvn r9, #0x4 @ mask to get clear bit2
and r10, r10, r9 @ clear bit2 for lock mode
orr r10, r10, #0x8 @ make sure DLL on (es2 bit pos)
str r10, [r11] @ commit to DLLA_CTRL
add r11, r11, #0x8 @ move to dllb
str r10, [r11] @ hit DLLB also
mov r4, #0x800 @ relock time (min 0x400 L3 clocks)
wait_dll_lock:
subs r4, r4, #0x1
bne wait_dll_lock
nop
ldmfd sp!, {r0-r12, pc} @ restore regs and return
omap243x_ssp_set_config:
.word OMAP243X_PRCM_CLKCFG_CTRL
omap243x_ssp_pll_ctl:
.word OMAP2430_CM_REGADDR(PLL_MOD, CM_CLKEN)
omap243x_ssp_pll_stat:
.word OMAP2430_CM_REGADDR(PLL_MOD, CM_IDLEST)
omap243x_ssp_pll_div:
.word OMAP2430_CM_REGADDR(PLL_MOD, CM_CLKSEL1)
omap243x_ssp_sdrc_rfr:
.word OMAP243X_SDRC_REGADDR(SDRC_RFR_CTRL_0)
omap243x_ssp_dlla_ctrl:
.word OMAP243X_SDRC_REGADDR(SDRC_DLLA_CTRL)
ENTRY(omap243x_sram_set_prcm_sz)
.word . - omap243x_sram_set_prcm

209
arch/arm/plat-omap/sram.c
View file

@ -10,6 +10,7 @@
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#undef DEBUG
#include <linux/module.h>
#include <linux/kernel.h>
@ -24,25 +25,43 @@
#include <asm/arch/sram.h>
#include <asm/arch/board.h>
#include <asm/arch/control.h>
#if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3)
# include "../mach-omap2/prm.h"
# include "../mach-omap2/cm.h"
# include "../mach-omap2/sdrc.h"
#endif
#define OMAP1_SRAM_PA 0x20000000
#define OMAP1_SRAM_VA 0xd0000000
#define OMAP1_SRAM_VA VMALLOC_END
#define OMAP2_SRAM_PA 0x40200000
#define OMAP2_SRAM_PUB_PA 0x4020f800
#define OMAP2_SRAM_VA 0xd0000000
#define OMAP2_SRAM_PUB_VA 0xd0000800
#define OMAP2_SRAM_VA VMALLOC_END
#define OMAP2_SRAM_PUB_VA (VMALLOC_END + 0x800)
#define OMAP3_SRAM_PA 0x40200000
#define OMAP3_SRAM_VA 0xd7000000
#define OMAP3_SRAM_PUB_PA 0x40208000
#define OMAP3_SRAM_PUB_VA 0xd7008000
#if defined(CONFIG_ARCH_OMAP24XX)
#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX)
#define SRAM_BOOTLOADER_SZ 0x00
#else
#define SRAM_BOOTLOADER_SZ 0x80
#endif
#define VA_REQINFOPERM0 IO_ADDRESS(0x68005048)
#define VA_READPERM0 IO_ADDRESS(0x68005050)
#define VA_WRITEPERM0 IO_ADDRESS(0x68005058)
#define VA_CONTROL_STAT IO_ADDRESS(0x480002F8)
#define OMAP24XX_VA_REQINFOPERM0 IO_ADDRESS(0x68005048)
#define OMAP24XX_VA_READPERM0 IO_ADDRESS(0x68005050)
#define OMAP24XX_VA_WRITEPERM0 IO_ADDRESS(0x68005058)
#define OMAP34XX_VA_REQINFOPERM0 IO_ADDRESS(0x68012848)
#define OMAP34XX_VA_READPERM0 IO_ADDRESS(0x68012850)
#define OMAP34XX_VA_WRITEPERM0 IO_ADDRESS(0x68012858)
#define OMAP34XX_VA_ADDR_MATCH2 IO_ADDRESS(0x68012880)
#define OMAP34XX_VA_SMS_RG_ATT0 IO_ADDRESS(0x6C000048)
#define OMAP34XX_VA_CONTROL_STAT IO_ADDRESS(0x480022F0)
#define GP_DEVICE 0x300
#define TYPE_MASK 0x700
#define ROUND_DOWN(value,boundary) ((value) & (~((boundary)-1)))
@ -68,14 +87,21 @@ static int is_sram_locked(void)
int type = 0;
if (cpu_is_omap242x())
type = __raw_readl(VA_CONTROL_STAT) & TYPE_MASK;
type = system_rev & OMAP2_DEVICETYPE_MASK;
if (type == GP_DEVICE) {
/* RAMFW: R/W access to all initiators for all qualifier sets */
if (cpu_is_omap242x()) {
__raw_writel(0xFF, VA_REQINFOPERM0); /* all q-vects */
__raw_writel(0xCFDE, VA_READPERM0); /* all i-read */
__raw_writel(0xCFDE, VA_WRITEPERM0); /* all i-write */
__raw_writel(0xFF, OMAP24XX_VA_REQINFOPERM0); /* all q-vects */
__raw_writel(0xCFDE, OMAP24XX_VA_READPERM0); /* all i-read */
__raw_writel(0xCFDE, OMAP24XX_VA_WRITEPERM0); /* all i-write */
}
if (cpu_is_omap34xx()) {
__raw_writel(0xFFFF, OMAP34XX_VA_REQINFOPERM0); /* all q-vects */
__raw_writel(0xFFFF, OMAP34XX_VA_READPERM0); /* all i-read */
__raw_writel(0xFFFF, OMAP34XX_VA_WRITEPERM0); /* all i-write */
__raw_writel(0x0, OMAP34XX_VA_ADDR_MATCH2);
__raw_writel(0xFFFFFFFF, OMAP34XX_VA_SMS_RG_ATT0);
}
return 0;
} else
@ -92,18 +118,30 @@ void __init omap_detect_sram(void)
{
unsigned long reserved;
if (cpu_is_omap24xx()) {
if (cpu_class_is_omap2()) {
if (is_sram_locked()) {
omap_sram_base = OMAP2_SRAM_PUB_VA;
omap_sram_start = OMAP2_SRAM_PUB_PA;
omap_sram_size = 0x800; /* 2K */
if (cpu_is_omap34xx()) {
omap_sram_base = OMAP3_SRAM_PUB_VA;
omap_sram_start = OMAP3_SRAM_PUB_PA;
omap_sram_size = 0x8000; /* 32K */
} else {
omap_sram_base = OMAP2_SRAM_PUB_VA;
omap_sram_start = OMAP2_SRAM_PUB_PA;
omap_sram_size = 0x800; /* 2K */
}
} else {
omap_sram_base = OMAP2_SRAM_VA;
omap_sram_start = OMAP2_SRAM_PA;
if (cpu_is_omap242x())
omap_sram_size = 0xa0000; /* 640K */
else if (cpu_is_omap243x())
if (cpu_is_omap34xx()) {
omap_sram_base = OMAP3_SRAM_VA;
omap_sram_start = OMAP3_SRAM_PA;
omap_sram_size = 0x10000; /* 64K */
} else {
omap_sram_base = OMAP2_SRAM_VA;
omap_sram_start = OMAP2_SRAM_PA;
if (cpu_is_omap242x())
omap_sram_size = 0xa0000; /* 640K */
else if (cpu_is_omap243x())
omap_sram_size = 0x10000; /* 64K */
}
}
} else {
omap_sram_base = OMAP1_SRAM_VA;
@ -157,6 +195,13 @@ void __init omap_map_sram(void)
omap_sram_io_desc[0].pfn = __phys_to_pfn(base);
}
if (cpu_is_omap34xx()) {
omap_sram_io_desc[0].virtual = OMAP3_SRAM_VA;
base = OMAP3_SRAM_PA;
base = ROUND_DOWN(base, PAGE_SIZE);
omap_sram_io_desc[0].pfn = __phys_to_pfn(base);
}
omap_sram_io_desc[0].length = 1024 * 1024; /* Use section desc */
iotable_init(omap_sram_io_desc, ARRAY_SIZE(omap_sram_io_desc));
@ -191,6 +236,7 @@ void * omap_sram_push(void * start, unsigned long size)
omap_sram_ceil -= size;
omap_sram_ceil = ROUND_DOWN(omap_sram_ceil, sizeof(void *));
memcpy((void *)omap_sram_ceil, start, size);
flush_icache_range((unsigned long)start, (unsigned long)(start + size));
return (void *)omap_sram_ceil;
}
@ -214,8 +260,9 @@ void omap_sram_reprogram_clock(u32 dpllctl, u32 ckctl)
int __init omap1_sram_init(void)
{
_omap_sram_reprogram_clock = omap_sram_push(sram_reprogram_clock,
sram_reprogram_clock_sz);
_omap_sram_reprogram_clock =
omap_sram_push(omap1_sram_reprogram_clock,
omap1_sram_reprogram_clock_sz);
return 0;
}
@ -224,7 +271,7 @@ int __init omap1_sram_init(void)
#define omap1_sram_init() do {} while (0)
#endif
#ifdef CONFIG_ARCH_OMAP2
#if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3)
static void (*_omap2_sram_ddr_init)(u32 *slow_dll_ctrl, u32 fast_dll_ctrl,
u32 base_cs, u32 force_unlock);
@ -259,19 +306,109 @@ u32 omap2_set_prcm(u32 dpll_ctrl_val, u32 sdrc_rfr_val, int bypass)
return _omap2_set_prcm(dpll_ctrl_val, sdrc_rfr_val, bypass);
}
#endif
int __init omap2_sram_init(void)
#ifdef CONFIG_ARCH_OMAP2420
int __init omap242x_sram_init(void)
{
_omap2_sram_ddr_init = omap_sram_push(sram_ddr_init, sram_ddr_init_sz);
_omap2_sram_ddr_init = omap_sram_push(omap242x_sram_ddr_init,
omap242x_sram_ddr_init_sz);
_omap2_sram_reprogram_sdrc = omap_sram_push(sram_reprogram_sdrc,
sram_reprogram_sdrc_sz);
_omap2_set_prcm = omap_sram_push(sram_set_prcm, sram_set_prcm_sz);
_omap2_sram_reprogram_sdrc = omap_sram_push(omap242x_sram_reprogram_sdrc,
omap242x_sram_reprogram_sdrc_sz);
_omap2_set_prcm = omap_sram_push(omap242x_sram_set_prcm,
omap242x_sram_set_prcm_sz);
return 0;
}
#else
#define omap2_sram_init() do {} while (0)
static inline int omap242x_sram_init(void)
{
return 0;
}
#endif
#ifdef CONFIG_ARCH_OMAP2430
int __init omap243x_sram_init(void)
{
_omap2_sram_ddr_init = omap_sram_push(omap243x_sram_ddr_init,
omap243x_sram_ddr_init_sz);
_omap2_sram_reprogram_sdrc = omap_sram_push(omap243x_sram_reprogram_sdrc,
omap243x_sram_reprogram_sdrc_sz);
_omap2_set_prcm = omap_sram_push(omap243x_sram_set_prcm,
omap243x_sram_set_prcm_sz);
return 0;
}
#else
static inline int omap243x_sram_init(void)
{
return 0;
}
#endif
#ifdef CONFIG_ARCH_OMAP3
static u32 (*_omap2_sram_reprogram_gpmc)(u32 perf_level);
u32 omap2_sram_reprogram_gpmc(u32 perf_level)
{
if (!_omap2_sram_reprogram_gpmc)
omap_sram_error();
return _omap2_sram_reprogram_gpmc(perf_level);
}
static u32 (*_omap2_sram_configure_core_dpll)(u32 m, u32 n,
u32 freqsel, u32 m2);
u32 omap2_sram_configure_core_dpll(u32 m, u32 n, u32 freqsel, u32 m2)
{
if (!_omap2_sram_configure_core_dpll)
omap_sram_error();
return _omap2_sram_configure_core_dpll(m, n, freqsel, m2);
}
/* REVISIT: Should this be same as omap34xx_sram_init() after off-idle? */
void restore_sram_functions(void)
{
omap_sram_ceil = omap_sram_base + omap_sram_size;
_omap2_sram_reprogram_gpmc = omap_sram_push(omap34xx_sram_reprogram_gpmc,
omap34xx_sram_reprogram_gpmc_sz);
_omap2_sram_configure_core_dpll =
omap_sram_push(omap34xx_sram_configure_core_dpll,
omap34xx_sram_configure_core_dpll_sz);
}
int __init omap34xx_sram_init(void)
{
_omap2_sram_ddr_init = omap_sram_push(omap34xx_sram_ddr_init,
omap34xx_sram_ddr_init_sz);
_omap2_sram_reprogram_sdrc = omap_sram_push(omap34xx_sram_reprogram_sdrc,
omap34xx_sram_reprogram_sdrc_sz);
_omap2_set_prcm = omap_sram_push(omap34xx_sram_set_prcm,
omap34xx_sram_set_prcm_sz);
_omap2_sram_reprogram_gpmc = omap_sram_push(omap34xx_sram_reprogram_gpmc,
omap34xx_sram_reprogram_gpmc_sz);
_omap2_sram_configure_core_dpll =
omap_sram_push(omap34xx_sram_configure_core_dpll,
omap34xx_sram_configure_core_dpll_sz);
return 0;
}
#else
static inline int omap34xx_sram_init(void)
{
return 0;
}
#endif
int __init omap_sram_init(void)
@ -279,10 +416,14 @@ int __init omap_sram_init(void)
omap_detect_sram();
omap_map_sram();
if (!cpu_is_omap24xx())
if (!(cpu_class_is_omap2()))
omap1_sram_init();
else
omap2_sram_init();
else if (cpu_is_omap242x())
omap242x_sram_init();
else if (cpu_is_omap2430())
omap243x_sram_init();
else if (cpu_is_omap34xx())
omap34xx_sram_init();
return 0;
}

37
include/asm-arm/arch-omap/sram.h
View file

@ -11,6 +11,7 @@
#ifndef __ARCH_ARM_OMAP_SRAM_H
#define __ARCH_ARM_OMAP_SRAM_H
extern int __init omap_sram_init(void);
extern void * omap_sram_push(void * start, unsigned long size);
extern void omap_sram_reprogram_clock(u32 dpllctl, u32 ckctl);
@ -21,17 +22,35 @@ extern void omap2_sram_reprogram_sdrc(u32 perf_level, u32 dll_val,
extern u32 omap2_set_prcm(u32 dpll_ctrl_val, u32 sdrc_rfr_val, int bypass);
/* Do not use these */
extern void sram_reprogram_clock(u32 ckctl, u32 dpllctl);
extern unsigned long sram_reprogram_clock_sz;
extern void omap1_sram_reprogram_clock(u32 ckctl, u32 dpllctl);
extern unsigned long omap1_sram_reprogram_clock_sz;
extern void sram_ddr_init(u32 *slow_dll_ctrl, u32 fast_dll_ctrl,
u32 base_cs, u32 force_unlock);
extern unsigned long sram_ddr_init_sz;
extern void omap24xx_sram_reprogram_clock(u32 ckctl, u32 dpllctl);
extern unsigned long omap24xx_sram_reprogram_clock_sz;
extern u32 sram_set_prcm(u32 dpll_ctrl_val, u32 sdrc_rfr_val, int bypass);
extern unsigned long sram_set_prcm_sz;
extern void omap242x_sram_ddr_init(u32 *slow_dll_ctrl, u32 fast_dll_ctrl,
u32 base_cs, u32 force_unlock);
extern unsigned long omap242x_sram_ddr_init_sz;
extern void sram_reprogram_sdrc(u32 perf_level, u32 dll_val, u32 mem_type);
extern unsigned long sram_reprogram_sdrc_sz;
extern u32 omap242x_sram_set_prcm(u32 dpll_ctrl_val, u32 sdrc_rfr_val,
int bypass);
extern unsigned long omap242x_sram_set_prcm_sz;
extern void omap242x_sram_reprogram_sdrc(u32 perf_level, u32 dll_val,
u32 mem_type);
extern unsigned long omap242x_sram_reprogram_sdrc_sz;
extern void omap243x_sram_ddr_init(u32 *slow_dll_ctrl, u32 fast_dll_ctrl,
u32 base_cs, u32 force_unlock);
extern unsigned long omap243x_sram_ddr_init_sz;
extern u32 omap243x_sram_set_prcm(u32 dpll_ctrl_val, u32 sdrc_rfr_val,
int bypass);
extern unsigned long omap243x_sram_set_prcm_sz;
extern void omap243x_sram_reprogram_sdrc(u32 perf_level, u32 dll_val,
u32 mem_type);
extern unsigned long omap243x_sram_reprogram_sdrc_sz;
#endif