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| author | Benoît Thébaudeau <benoit.thebaudeau@advansee.com> | 2012-08-20 09:00:57 +0000 |
|---|---|---|
| committer | Tom Rini <trini@ti.com> | 2012-10-15 11:54:14 -0700 |
| commit | 85d993cef9b8e16431800dfc23e90e23bb144357 (patch) | |
| tree | 010a17f5423b84c8b12f857f104ec6a6f5340ba7 /arch | |
| parent | 9e0081d573442e7234355f0a043218d15df03933 (diff) | |
| download | u-boot-imx-85d993cef9b8e16431800dfc23e90e23bb144357.zip u-boot-imx-85d993cef9b8e16431800dfc23e90e23bb144357.tar.gz u-boot-imx-85d993cef9b8e16431800dfc23e90e23bb144357.tar.bz2 | |
mx25: Clean up lowlevel_init
Clean up mx25 lowlevel_init:
- Add comments.
- Do not use write32 repeatedly with the same value in order not to increase
code size.
- Make register values configurable.
- Use macro parameters with default values instead of literal constants.
- Use defined macros instead of duplicating code.
Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com>
Cc: Stefano Babic <sbabic@denx.de>
Cc: John Rigby <jcrigby@gmail.com>
Cc: Matthias Weisser <weisserm@arcor.de>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/include/asm/arch-mx25/macro.h | 87 |
1 files changed, 65 insertions, 22 deletions
diff --git a/arch/arm/include/asm/arch-mx25/macro.h b/arch/arm/include/asm/arch-mx25/macro.h index 3b694da..56cae36 100644 --- a/arch/arm/include/asm/arch-mx25/macro.h +++ b/arch/arm/include/asm/arch-mx25/macro.h @@ -32,32 +32,75 @@ #include <asm/arch/imx-regs.h> #include <generated/asm-offsets.h> +#include <asm/macro.h> -.macro init_aips - write32 IMX_AIPS1_BASE + AIPS_MPR_0_7, 0x77777777 - write32 IMX_AIPS1_BASE + AIPS_MPR_8_15, 0x77777777 - write32 IMX_AIPS2_BASE + AIPS_MPR_0_7, 0x77777777 - write32 IMX_AIPS2_BASE + AIPS_MPR_8_15, 0x77777777 +/* + * AIPS setup - Only setup MPROTx registers. + * The PACR default values are good. + * + * Default argument values: + * - MPR: Set all MPROTx to be non-bufferable, trusted for R/W, not forced to + * user-mode. + */ +.macro init_aips mpr=0x77777777 + ldr r0, =IMX_AIPS1_BASE + ldr r1, =\mpr + str r1, [r0, #AIPS_MPR_0_7] + str r1, [r0, #AIPS_MPR_8_15] + ldr r2, =IMX_AIPS2_BASE + str r1, [r2, #AIPS_MPR_0_7] + str r1, [r2, #AIPS_MPR_8_15] .endm -.macro init_max - write32 IMX_MAX_BASE + MAX_MPR0, 0x43210 - write32 IMX_MAX_BASE + MAX_MPR1, 0x43210 - write32 IMX_MAX_BASE + MAX_MPR2, 0x43210 - write32 IMX_MAX_BASE + MAX_MPR3, 0x43210 - write32 IMX_MAX_BASE + MAX_MPR4, 0x43210 - - write32 IMX_MAX_BASE + MAX_SGPCR0, 0x10 - write32 IMX_MAX_BASE + MAX_SGPCR1, 0x10 - write32 IMX_MAX_BASE + MAX_SGPCR2, 0x10 - write32 IMX_MAX_BASE + MAX_SGPCR3, 0x10 - write32 IMX_MAX_BASE + MAX_SGPCR4, 0x10 +/* + * MAX (Multi-Layer AHB Crossbar Switch) setup + * + * Default argument values: + * - MPR: priority is IAHB > DAHB > USBOTG > RTIC > eSDHC2/SDMA + * - SGPCR: always park on last master + * - MGPCR: restore default values + */ +.macro init_max mpr=0x00043210, sgpcr=0x00000010, mgpcr=0x00000000 + ldr r0, =IMX_MAX_BASE + ldr r1, =\mpr + str r1, [r0, #MAX_MPR0] /* for S0 */ + str r1, [r0, #MAX_MPR1] /* for S1 */ + str r1, [r0, #MAX_MPR2] /* for S2 */ + str r1, [r0, #MAX_MPR3] /* for S3 */ + str r1, [r0, #MAX_MPR4] /* for S4 */ + ldr r1, =\sgpcr + str r1, [r0, #MAX_SGPCR0] /* for S0 */ + str r1, [r0, #MAX_SGPCR1] /* for S1 */ + str r1, [r0, #MAX_SGPCR2] /* for S2 */ + str r1, [r0, #MAX_SGPCR3] /* for S3 */ + str r1, [r0, #MAX_SGPCR4] /* for S4 */ + ldr r1, =\mgpcr + str r1, [r0, #MAX_MGPCR0] /* for M0 */ + str r1, [r0, #MAX_MGPCR1] /* for M1 */ + str r1, [r0, #MAX_MGPCR2] /* for M2 */ + str r1, [r0, #MAX_MGPCR3] /* for M3 */ + str r1, [r0, #MAX_MGPCR4] /* for M4 */ +.endm - write32 IMX_MAX_BASE + MAX_MGPCR0, 0x0 - write32 IMX_MAX_BASE + MAX_MGPCR1, 0x0 - write32 IMX_MAX_BASE + MAX_MGPCR2, 0x0 - write32 IMX_MAX_BASE + MAX_MGPCR3, 0x0 - write32 IMX_MAX_BASE + MAX_MGPCR4, 0x0 +/* + * M3IF setup + * + * Default argument values: + * - CTL: + * MRRP[0] = LCDC on priority list (1 << 0) = 0x00000001 + * MRRP[1] = MAX1 not on priority list (0 << 1) = 0x00000000 + * MRRP[2] = MAX0 not on priority list (0 << 2) = 0x00000000 + * MRRP[3] = USBH not on priority list (0 << 3) = 0x00000000 + * MRRP[4] = SDMA not on priority list (0 << 4) = 0x00000000 + * MRRP[5] = eSDHC1/ATA/FEC not on priority list (0 << 5) = 0x00000000 + * MRRP[6] = LCDC/SLCDC/MAX2 not on priority list (0 << 6) = 0x00000000 + * MRRP[7] = CSI not on priority list (0 << 7) = 0x00000000 + * ------------ + * 0x00000001 + */ +.macro init_m3if ctl=0x00000001 + /* M3IF Control Register (M3IFCTL) */ + write32 IMX_M3IF_CTRL_BASE, \ctl .endm #endif /* __ASSEMBLY__ */ |