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authorMichael Hennerich <michael.hennerich@analog.com>2009-01-07 10:14:39 -0500
committerBryan Wu <cooloney@kernel.org>2009-01-07 10:14:39 -0500
commit73feb5c09dcf0d64beb67aa5e1f79e11a388e0ff (patch)
tree09fa1f153a2ca810ad72978736f85359205d64a3 /arch/blackfin/mach-bf538
parentc97618d3b7b8ef86a966c4b67b54e5ca15814905 (diff)
Blackfin arch: fix bugs and unify BFIN_KERNEL_CLOCK option
- remove duplicated code and headers - add option allowing arbitrary SDRAM/DDR Timing parameters. - mark automatically calculated timings as EXPERIMENTAL - fix comment header block Related to BUGs: - kernel boot up fails with CONFIG_BFIN_KERNEL_CLOCK item on. - kernel does not boot if re-program clocks [ Mike Frysinger <vapier.adi@gmail.com> - fix comment header - mark do_sync static - document the DMA shutdown - simplify SIC_IWR handling - fix ANOMALY_05000265 handling to work as intended ] Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
Diffstat (limited to 'arch/blackfin/mach-bf538')
-rw-r--r--arch/blackfin/mach-bf538/Makefile2
-rw-r--r--arch/blackfin/mach-bf538/head.S137
-rw-r--r--arch/blackfin/mach-bf538/include/mach/mem_init.h303
3 files changed, 0 insertions, 442 deletions
diff --git a/arch/blackfin/mach-bf538/Makefile b/arch/blackfin/mach-bf538/Makefile
index 1f093c4f7235..8cd2719684db 100644
--- a/arch/blackfin/mach-bf538/Makefile
+++ b/arch/blackfin/mach-bf538/Makefile
@@ -2,6 +2,4 @@
2# arch/blackfin/mach-bf538/Makefile 2# arch/blackfin/mach-bf538/Makefile
3# 3#
4 4
5extra-y := head.o
6
7obj-y := ints-priority.o dma.o 5obj-y := ints-priority.o dma.o
diff --git a/arch/blackfin/mach-bf538/head.S b/arch/blackfin/mach-bf538/head.S
deleted file mode 100644
index 39013ec97008..000000000000
--- a/arch/blackfin/mach-bf538/head.S
+++ /dev/null
@@ -1,137 +0,0 @@
1/*
2 * File: arch/blackfin/mach-bf538/head.S
3 * Based on:
4 * Author: Jeff Dionne <jeff@uclinux.org> COPYRIGHT 1998 D. Jeff Dionne
5 *
6 * Created: 1998
7 * Description: bf533 startup file
8 *
9 * Modified:
10 * Copyright 2004-2006 Analog Devices Inc.
11 *
12 * Bugs: Enter bugs at http://blackfin.uclinux.org/
13 *
14 * This program is free software; you can redistribute it and/or modify
15 * it under the terms of the GNU General Public License as published by
16 * the Free Software Foundation; either version 2 of the License, or
17 * (at your option) any later version.
18 *
19 * This program is distributed in the hope that it will be useful,
20 * but WITHOUT ANY WARRANTY; without even the implied warranty of
21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 * GNU General Public License for more details.
23 *
24 * You should have received a copy of the GNU General Public License
25 * along with this program; if not, see the file COPYING, or write
26 * to the Free Software Foundation, Inc.,
27 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
28 */
29
30#include <linux/linkage.h>
31#include <linux/init.h>
32#include <asm/blackfin.h>
33#ifdef CONFIG_BFIN_KERNEL_CLOCK
34#include <asm/mach-common/clocks.h>
35#include <asm/mach/mem_init.h>
36#endif
37
38.section .l1.text
39#ifdef CONFIG_BFIN_KERNEL_CLOCK
40ENTRY(_start_dma_code)
41 p0.h = hi(SIC_IWR0);
42 p0.l = lo(SIC_IWR0);
43 r0.l = 0x1;
44 r0.h = 0x0;
45 [p0] = r0;
46 SSYNC;
47
48 /*
49 * Set PLL_CTL
50 * - [14:09] = MSEL[5:0] : CLKIN / VCO multiplication factors
51 * - [8] = BYPASS : BYPASS the PLL, run CLKIN into CCLK/SCLK
52 * - [7] = output delay (add 200ps of delay to mem signals)
53 * - [6] = input delay (add 200ps of input delay to mem signals)
54 * - [5] = PDWN : 1=All Clocks off
55 * - [3] = STOPCK : 1=Core Clock off
56 * - [1] = PLL_OFF : 1=Disable Power to PLL
57 * - [0] = DF : 1=Pass CLKIN/2 to PLL / 0=Pass CLKIN to PLL
58 * all other bits set to zero
59 */
60
61 p0.h = hi(PLL_LOCKCNT);
62 p0.l = lo(PLL_LOCKCNT);
63 r0 = 0x300(Z);
64 w[p0] = r0.l;
65 ssync;
66
67 P2.H = hi(EBIU_SDGCTL);
68 P2.L = lo(EBIU_SDGCTL);
69 R0 = [P2];
70 BITSET (R0, 24);
71 [P2] = R0;
72 SSYNC;
73
74 r0 = CONFIG_VCO_MULT & 63; /* Load the VCO multiplier */
75 r0 = r0 << 9; /* Shift it over, */
76 r1 = CLKIN_HALF; /* Do we need to divide CLKIN by 2?*/
77 r0 = r1 | r0;
78 r1 = PLL_BYPASS; /* Bypass the PLL? */
79 r1 = r1 << 8; /* Shift it over */
80 r0 = r1 | r0; /* add them all together */
81#ifdef ANOMALY_05000265
82 BITSET(r0, 15); /* Add 250 mV of hysteresis to SPORT input pins */
83#endif
84
85 p0.h = hi(PLL_CTL);
86 p0.l = lo(PLL_CTL); /* Load the address */
87 cli r2; /* Disable interrupts */
88 ssync;
89 w[p0] = r0.l; /* Set the value */
90 idle; /* Wait for the PLL to stablize */
91 sti r2; /* Enable interrupts */
92
93.Lcheck_again:
94 p0.h = hi(PLL_STAT);
95 p0.l = lo(PLL_STAT);
96 R0 = W[P0](Z);
97 CC = BITTST(R0,5);
98 if ! CC jump .Lcheck_again;
99
100 /* Configure SCLK & CCLK Dividers */
101 r0 = (CONFIG_CCLK_ACT_DIV | CONFIG_SCLK_DIV);
102 p0.h = hi(PLL_DIV);
103 p0.l = lo(PLL_DIV);
104 w[p0] = r0.l;
105 ssync;
106
107 p0.l = lo(EBIU_SDRRC);
108 p0.h = hi(EBIU_SDRRC);
109 r0 = mem_SDRRC;
110 w[p0] = r0.l;
111 ssync;
112
113 P2.H = hi(EBIU_SDGCTL);
114 P2.L = lo(EBIU_SDGCTL);
115 R0 = [P2];
116 BITCLR (R0, 24);
117 p0.h = hi(EBIU_SDSTAT);
118 p0.l = lo(EBIU_SDSTAT);
119 r2.l = w[p0];
120 cc = bittst(r2,3);
121 if !cc jump .Lskip;
122 NOP;
123 BITSET (R0, 23);
124.Lskip:
125 [P2] = R0;
126 SSYNC;
127
128 R0.L = lo(mem_SDGCTL);
129 R0.H = hi(mem_SDGCTL);
130 R1 = [p2];
131 R1 = R1 | R0;
132 [P2] = R1;
133 SSYNC;
134
135 RTS;
136ENDPROC(_start_dma_code)
137#endif /* CONFIG_BFIN_KERNEL_CLOCK */
diff --git a/arch/blackfin/mach-bf538/include/mach/mem_init.h b/arch/blackfin/mach-bf538/include/mach/mem_init.h
deleted file mode 100644
index d3961ba997c6..000000000000
--- a/arch/blackfin/mach-bf538/include/mach/mem_init.h
+++ /dev/null
@@ -1,303 +0,0 @@
1/*
2 * File: include/asm-blackfin/mach-bf538/mem_init.h
3 * Based on:
4 * Author:
5 *
6 * Created:
7 * Description:
8 *
9 * Rev:
10 *
11 * Modified:
12 * Copyright 2004-2006 Analog Devices Inc.
13 *
14 * Bugs: Enter bugs at http://blackfin.uclinux.org/
15 *
16 * This program is free software; you can redistribute it and/or modify
17 * it under the terms of the GNU General Public License as published by
18 * the Free Software Foundation; either version 2, or (at your option)
19 * any later version.
20 *
21 * This program is distributed in the hope that it will be useful,
22 * but WITHOUT ANY WARRANTY; without even the implied warranty of
23 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
24 * GNU General Public License for more details.
25 *
26 * You should have received a copy of the GNU General Public License
27 * along with this program; see the file COPYING.
28 * If not, write to the Free Software Foundation,
29 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
30 */
31
32#if (CONFIG_MEM_MT48LC16M16A2TG_75 || CONFIG_MEM_MT48LC64M4A2FB_7E || CONFIG_MEM_MT48LC16M8A2TG_75 || CONFIG_MEM_GENERIC_BOARD || CONFIG_MEM_MT48LC32M8A2_75)
33#if (CONFIG_SCLK_HZ > 119402985)
34#define SDRAM_tRP TRP_2
35#define SDRAM_tRP_num 2
36#define SDRAM_tRAS TRAS_7
37#define SDRAM_tRAS_num 7
38#define SDRAM_tRCD TRCD_2
39#define SDRAM_tWR TWR_2
40#endif
41#if (CONFIG_SCLK_HZ > 104477612) && (CONFIG_SCLK_HZ <= 119402985)
42#define SDRAM_tRP TRP_2
43#define SDRAM_tRP_num 2
44#define SDRAM_tRAS TRAS_6
45#define SDRAM_tRAS_num 6
46#define SDRAM_tRCD TRCD_2
47#define SDRAM_tWR TWR_2
48#endif
49#if (CONFIG_SCLK_HZ > 89552239) && (CONFIG_SCLK_HZ <= 104477612)
50#define SDRAM_tRP TRP_2
51#define SDRAM_tRP_num 2
52#define SDRAM_tRAS TRAS_5
53#define SDRAM_tRAS_num 5
54#define SDRAM_tRCD TRCD_2
55#define SDRAM_tWR TWR_2
56#endif
57#if (CONFIG_SCLK_HZ > 74626866) && (CONFIG_SCLK_HZ <= 89552239)
58#define SDRAM_tRP TRP_2
59#define SDRAM_tRP_num 2
60#define SDRAM_tRAS TRAS_4
61#define SDRAM_tRAS_num 4
62#define SDRAM_tRCD TRCD_2
63#define SDRAM_tWR TWR_2
64#endif
65#if (CONFIG_SCLK_HZ > 66666667) && (CONFIG_SCLK_HZ <= 74626866)
66#define SDRAM_tRP TRP_2
67#define SDRAM_tRP_num 2
68#define SDRAM_tRAS TRAS_3
69#define SDRAM_tRAS_num 3
70#define SDRAM_tRCD TRCD_2
71#define SDRAM_tWR TWR_2
72#endif
73#if (CONFIG_SCLK_HZ > 59701493) && (CONFIG_SCLK_HZ <= 66666667)
74#define SDRAM_tRP TRP_1
75#define SDRAM_tRP_num 1
76#define SDRAM_tRAS TRAS_4
77#define SDRAM_tRAS_num 3
78#define SDRAM_tRCD TRCD_1
79#define SDRAM_tWR TWR_2
80#endif
81#if (CONFIG_SCLK_HZ > 44776119) && (CONFIG_SCLK_HZ <= 59701493)
82#define SDRAM_tRP TRP_1
83#define SDRAM_tRP_num 1
84#define SDRAM_tRAS TRAS_3
85#define SDRAM_tRAS_num 3
86#define SDRAM_tRCD TRCD_1
87#define SDRAM_tWR TWR_2
88#endif
89#if (CONFIG_SCLK_HZ > 29850746) && (CONFIG_SCLK_HZ <= 44776119)
90#define SDRAM_tRP TRP_1
91#define SDRAM_tRP_num 1
92#define SDRAM_tRAS TRAS_2
93#define SDRAM_tRAS_num 2
94#define SDRAM_tRCD TRCD_1
95#define SDRAM_tWR TWR_2
96#endif
97#if (CONFIG_SCLK_HZ <= 29850746)
98#define SDRAM_tRP TRP_1
99#define SDRAM_tRP_num 1
100#define SDRAM_tRAS TRAS_1
101#define SDRAM_tRAS_num 1
102#define SDRAM_tRCD TRCD_1
103#define SDRAM_tWR TWR_2
104#endif
105#endif
106
107#if (CONFIG_MEM_MT48LC16M16A2TG_75)
108 /*SDRAM INFORMATION: */
109#define SDRAM_Tref 64 /* Refresh period in milliseconds */
110#define SDRAM_NRA 8192 /* Number of row addresses in SDRAM */
111#define SDRAM_CL CL_3
112#endif
113
114#if (CONFIG_MEM_MT48LC16M8A2TG_75)
115 /*SDRAM INFORMATION: */
116#define SDRAM_Tref 64 /* Refresh period in milliseconds */
117#define SDRAM_NRA 4096 /* Number of row addresses in SDRAM */
118#define SDRAM_CL CL_3
119#endif
120
121#if (CONFIG_MEM_MT48LC32M8A2_75)
122 /*SDRAM INFORMATION: */
123#define SDRAM_Tref 64 /* Refresh period in milliseconds */
124#define SDRAM_NRA 8192 /* Number of row addresses in SDRAM */
125#define SDRAM_CL CL_3
126#endif
127
128#if (CONFIG_MEM_MT48LC64M4A2FB_7E)
129 /*SDRAM INFORMATION: */
130#define SDRAM_Tref 64 /* Refresh period in milliseconds */
131#define SDRAM_NRA 8192 /* Number of row addresses in SDRAM */
132#define SDRAM_CL CL_3
133#endif
134
135#if (CONFIG_MEM_GENERIC_BOARD)
136 /*SDRAM INFORMATION: Modify this for your board */
137#define SDRAM_Tref 64 /* Refresh period in milliseconds */
138#define SDRAM_NRA 8192 /* Number of row addresses in SDRAM */
139#define SDRAM_CL CL_3
140#endif
141
142/* Equation from section 17 (p17-46) of BF533 HRM */
143#define mem_SDRRC ((((CONFIG_SCLK_HZ / 1000) * SDRAM_Tref) / SDRAM_NRA) - (SDRAM_tRAS_num + SDRAM_tRP_num))
144
145/* Enable SCLK Out */
146#define mem_SDGCTL (SCTLE | SDRAM_CL | SDRAM_tRAS | SDRAM_tRP | SDRAM_tRCD | SDRAM_tWR | PSS)
147
148#if defined CONFIG_CLKIN_HALF
149#define CLKIN_HALF 1
150#else
151#define CLKIN_HALF 0
152#endif
153
154#if defined CONFIG_PLL_BYPASS
155#define PLL_BYPASS 1
156#else
157#define PLL_BYPASS 0
158#endif
159
160/***************************************Currently Not Being Used *********************************/
161#define flash_EBIU_AMBCTL_WAT (((CONFIG_FLASH_SPEED_BWAT * 4) / (4000000000 / CONFIG_SCLK_HZ)) + 1)
162#define flash_EBIU_AMBCTL_RAT (((CONFIG_FLASH_SPEED_BRAT * 4) / (4000000000 / CONFIG_SCLK_HZ)) + 1)
163#define flash_EBIU_AMBCTL_HT (((CONFIG_FLASH_SPEED_BHT * 4) / (4000000000 / CONFIG_SCLK_HZ)))
164#define flash_EBIU_AMBCTL_ST (((CONFIG_FLASH_SPEED_BST * 4) / (4000000000 / CONFIG_SCLK_HZ)) + 1)
165#define flash_EBIU_AMBCTL_TT (((CONFIG_FLASH_SPEED_BTT * 4) / (4000000000 / CONFIG_SCLK_HZ)) + 1)
166
167#if (flash_EBIU_AMBCTL_TT > 3)
168#define flash_EBIU_AMBCTL0_TT B0TT_4
169#endif
170#if (flash_EBIU_AMBCTL_TT == 3)
171#define flash_EBIU_AMBCTL0_TT B0TT_3
172#endif
173#if (flash_EBIU_AMBCTL_TT == 2)
174#define flash_EBIU_AMBCTL0_TT B0TT_2
175#endif
176#if (flash_EBIU_AMBCTL_TT < 2)
177#define flash_EBIU_AMBCTL0_TT B0TT_1
178#endif
179
180#if (flash_EBIU_AMBCTL_ST > 3)
181#define flash_EBIU_AMBCTL0_ST B0ST_4
182#endif
183#if (flash_EBIU_AMBCTL_ST == 3)
184#define flash_EBIU_AMBCTL0_ST B0ST_3
185#endif
186#if (flash_EBIU_AMBCTL_ST == 2)
187#define flash_EBIU_AMBCTL0_ST B0ST_2
188#endif
189#if (flash_EBIU_AMBCTL_ST < 2)
190#define flash_EBIU_AMBCTL0_ST B0ST_1
191#endif
192
193#if (flash_EBIU_AMBCTL_HT > 2)
194#define flash_EBIU_AMBCTL0_HT B0HT_3
195#endif
196#if (flash_EBIU_AMBCTL_HT == 2)
197#define flash_EBIU_AMBCTL0_HT B0HT_2
198#endif
199#if (flash_EBIU_AMBCTL_HT == 1)
200#define flash_EBIU_AMBCTL0_HT B0HT_1
201#endif
202#if (flash_EBIU_AMBCTL_HT == 0 && CONFIG_FLASH_SPEED_BHT == 0)
203#define flash_EBIU_AMBCTL0_HT B0HT_0
204#endif
205#if (flash_EBIU_AMBCTL_HT == 0 && CONFIG_FLASH_SPEED_BHT != 0)
206#define flash_EBIU_AMBCTL0_HT B0HT_1
207#endif
208
209#if (flash_EBIU_AMBCTL_WAT > 14)
210#define flash_EBIU_AMBCTL0_WAT B0WAT_15
211#endif
212#if (flash_EBIU_AMBCTL_WAT == 14)
213#define flash_EBIU_AMBCTL0_WAT B0WAT_14
214#endif
215#if (flash_EBIU_AMBCTL_WAT == 13)
216#define flash_EBIU_AMBCTL0_WAT B0WAT_13
217#endif
218#if (flash_EBIU_AMBCTL_WAT == 12)
219#define flash_EBIU_AMBCTL0_WAT B0WAT_12
220#endif
221#if (flash_EBIU_AMBCTL_WAT == 11)
222#define flash_EBIU_AMBCTL0_WAT B0WAT_11
223#endif
224#if (flash_EBIU_AMBCTL_WAT == 10)
225#define flash_EBIU_AMBCTL0_WAT B0WAT_10
226#endif
227#if (flash_EBIU_AMBCTL_WAT == 9)
228#define flash_EBIU_AMBCTL0_WAT B0WAT_9
229#endif
230#if (flash_EBIU_AMBCTL_WAT == 8)
231#define flash_EBIU_AMBCTL0_WAT B0WAT_8
232#endif
233#if (flash_EBIU_AMBCTL_WAT == 7)
234#define flash_EBIU_AMBCTL0_WAT B0WAT_7
235#endif
236#if (flash_EBIU_AMBCTL_WAT == 6)
237#define flash_EBIU_AMBCTL0_WAT B0WAT_6
238#endif
239#if (flash_EBIU_AMBCTL_WAT == 5)
240#define flash_EBIU_AMBCTL0_WAT B0WAT_5
241#endif
242#if (flash_EBIU_AMBCTL_WAT == 4)
243#define flash_EBIU_AMBCTL0_WAT B0WAT_4
244#endif
245#if (flash_EBIU_AMBCTL_WAT == 3)
246#define flash_EBIU_AMBCTL0_WAT B0WAT_3
247#endif
248#if (flash_EBIU_AMBCTL_WAT == 2)
249#define flash_EBIU_AMBCTL0_WAT B0WAT_2
250#endif
251#if (flash_EBIU_AMBCTL_WAT == 1)
252#define flash_EBIU_AMBCTL0_WAT B0WAT_1
253#endif
254
255#if (flash_EBIU_AMBCTL_RAT > 14)
256#define flash_EBIU_AMBCTL0_RAT B0RAT_15
257#endif
258#if (flash_EBIU_AMBCTL_RAT == 14)
259#define flash_EBIU_AMBCTL0_RAT B0RAT_14
260#endif
261#if (flash_EBIU_AMBCTL_RAT == 13)
262#define flash_EBIU_AMBCTL0_RAT B0RAT_13
263#endif
264#if (flash_EBIU_AMBCTL_RAT == 12)
265#define flash_EBIU_AMBCTL0_RAT B0RAT_12
266#endif
267#if (flash_EBIU_AMBCTL_RAT == 11)
268#define flash_EBIU_AMBCTL0_RAT B0RAT_11
269#endif
270#if (flash_EBIU_AMBCTL_RAT == 10)
271#define flash_EBIU_AMBCTL0_RAT B0RAT_10
272#endif
273#if (flash_EBIU_AMBCTL_RAT == 9)
274#define flash_EBIU_AMBCTL0_RAT B0RAT_9
275#endif
276#if (flash_EBIU_AMBCTL_RAT == 8)
277#define flash_EBIU_AMBCTL0_RAT B0RAT_8
278#endif
279#if (flash_EBIU_AMBCTL_RAT == 7)
280#define flash_EBIU_AMBCTL0_RAT B0RAT_7
281#endif
282#if (flash_EBIU_AMBCTL_RAT == 6)
283#define flash_EBIU_AMBCTL0_RAT B0RAT_6
284#endif
285#if (flash_EBIU_AMBCTL_RAT == 5)
286#define flash_EBIU_AMBCTL0_RAT B0RAT_5
287#endif
288#if (flash_EBIU_AMBCTL_RAT == 4)
289#define flash_EBIU_AMBCTL0_RAT B0RAT_4
290#endif
291#if (flash_EBIU_AMBCTL_RAT == 3)
292#define flash_EBIU_AMBCTL0_RAT B0RAT_3
293#endif
294#if (flash_EBIU_AMBCTL_RAT == 2)
295#define flash_EBIU_AMBCTL0_RAT B0RAT_2
296#endif
297#if (flash_EBIU_AMBCTL_RAT == 1)
298#define flash_EBIU_AMBCTL0_RAT B0RAT_1
299#endif
300
301#define flash_EBIU_AMBCTL0 \
302 (flash_EBIU_AMBCTL0_WAT | flash_EBIU_AMBCTL0_RAT | flash_EBIU_AMBCTL0_HT | \
303 flash_EBIU_AMBCTL0_ST | flash_EBIU_AMBCTL0_TT | CONFIG_FLASH_SPEED_RDYEN)
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