diff options
| author | Angelo Dureghello <angelo@sysam.it> | 2017-05-14 21:42:27 +0200 |
|---|---|---|
| committer | Angelo Dureghello <angelo@sysam.it> | 2017-08-18 01:26:08 +0200 |
| commit | c74dda8b44622266feac7a0080a4302dbec052f5 (patch) | |
| tree | 494d090e439f20ff002d035a61431a0dd26e0323 /board/freescale/m54418twr | |
| parent | 336aee50cf55d4d98ddf3a4412c18286e7f0a4c0 (diff) | |
m68k: mcf5445x: move early ddr init as board-specific
For certain boot types and sbf, for V4 cpu's, an early ddr/sdram init
is required. This patch moves this ddr/sdram early initalization
away from start.S (to be board related).
Signed-off-by: Angelo Dureghello <angelo@sysam.it>
Diffstat (limited to 'board/freescale/m54418twr')
| -rw-r--r-- | board/freescale/m54418twr/Makefile | 2 | ||||
| -rw-r--r-- | board/freescale/m54418twr/sbf_dram_init.S | 86 |
2 files changed, 88 insertions, 0 deletions
diff --git a/board/freescale/m54418twr/Makefile b/board/freescale/m54418twr/Makefile index 371c04abe87..4ef1e5aee9f 100644 --- a/board/freescale/m54418twr/Makefile +++ b/board/freescale/m54418twr/Makefile @@ -5,3 +5,5 @@ # obj-y = m54418twr.o +extra-y += sbf_dram_init.o + diff --git a/board/freescale/m54418twr/sbf_dram_init.S b/board/freescale/m54418twr/sbf_dram_init.S new file mode 100644 index 00000000000..7f25793fe31 --- /dev/null +++ b/board/freescale/m54418twr/sbf_dram_init.S @@ -0,0 +1,86 @@ +/* + * Board-specific sbf ddr/sdram init. + * + * (C) Copyright 2017 Angelo Dureghello <angelo@sysam.it> + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +.global sbf_dram_init +.text + +sbf_dram_init: + move.l #0xFC04002D, %a1 + move.b #46, (%a1) /* DDR */ + + /* slew settings */ + move.l #0xEC094060, %a1 + move.b #0, (%a1) + + /* use vco instead of cpu*2 clock for ddr clock */ + move.l #0xEC09001A, %a1 + move.w #0xE01D, (%a1) + + /* DDR settings */ + move.l #0xFC0B8180, %a1 + move.l #0x00000000, (%a1) + move.l #0x40000000, (%a1) + + move.l #0xFC0B81AC, %a1 + move.l #0x01030203, (%a1) + + move.l #0xFC0B8000, %a1 + move.l #0x01010101, (%a1)+ /* 0x00 */ + move.l #0x00000101, (%a1)+ /* 0x04 */ + move.l #0x01010100, (%a1)+ /* 0x08 */ + move.l #0x01010000, (%a1)+ /* 0x0C */ + move.l #0x00010101, (%a1)+ /* 0x10 */ + move.l #0xFC0B8018, %a1 + move.l #0x00010100, (%a1)+ /* 0x18 */ + move.l #0x00000001, (%a1)+ /* 0x1C */ + move.l #0x01000001, (%a1)+ /* 0x20 */ + move.l #0x00000100, (%a1)+ /* 0x24 */ + move.l #0x00010001, (%a1)+ /* 0x28 */ + move.l #0x00000200, (%a1)+ /* 0x2C */ + move.l #0x01000002, (%a1)+ /* 0x30 */ + move.l #0x00000000, (%a1)+ /* 0x34 */ + move.l #0x00000100, (%a1)+ /* 0x38 */ + move.l #0x02000100, (%a1)+ /* 0x3C */ + move.l #0x02000407, (%a1)+ /* 0x40 */ + move.l #0x02030007, (%a1)+ /* 0x44 */ + move.l #0x02000100, (%a1)+ /* 0x48 */ + move.l #0x0A030203, (%a1)+ /* 0x4C */ + move.l #0x00020708, (%a1)+ /* 0x50 */ + move.l #0x00050008, (%a1)+ /* 0x54 */ + move.l #0x04030002, (%a1)+ /* 0x58 */ + move.l #0x00000004, (%a1)+ /* 0x5C */ + move.l #0x020A0000, (%a1)+ /* 0x60 */ + move.l #0x0C00000E, (%a1)+ /* 0x64 */ + move.l #0x00002004, (%a1)+ /* 0x68 */ + move.l #0x00000000, (%a1)+ /* 0x6C */ + move.l #0x00100010, (%a1)+ /* 0x70 */ + move.l #0x00100010, (%a1)+ /* 0x74 */ + move.l #0x00000000, (%a1)+ /* 0x78 */ + move.l #0x07990000, (%a1)+ /* 0x7C */ + move.l #0xFC0B80A0, %a1 + move.l #0x00000000, (%a1)+ /* 0xA0 */ + move.l #0x00C80064, (%a1)+ /* 0xA4 */ + move.l #0x44520002, (%a1)+ /* 0xA8 */ + move.l #0x00C80023, (%a1)+ /* 0xAC */ + move.l #0xFC0B80B4, %a1 + move.l #0x0000C350, (%a1) /* 0xB4 */ + move.l #0xFC0B80E0, %a1 + move.l #0x04000000, (%a1)+ /* 0xE0 */ + move.l #0x03000304, (%a1)+ /* 0xE4 */ + move.l #0x40040000, (%a1)+ /* 0xE8 */ + move.l #0xC0004004, (%a1)+ /* 0xEC */ + move.l #0x0642C000, (%a1)+ /* 0xF0 */ + move.l #0x00000642, (%a1)+ /* 0xF4 */ + move.l #0xFC0B8024, %a1 + tpf + move.l #0x01000100, (%a1) /* 0x24 */ + + move.l #0x2000, %d1 + bsr asm_delay + + rts |