2 * ASPEED AST2400 SMC Controller (SPI Flash Only)
4 * Copyright (C) 2016 IBM Corp.
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
25 #include "qemu/osdep.h"
26 #include "hw/sysbus.h"
27 #include "migration/vmstate.h"
29 #include "qemu/module.h"
30 #include "qemu/error-report.h"
31 #include "qapi/error.h"
32 #include "qemu/units.h"
36 #include "hw/qdev-properties.h"
37 #include "hw/ssi/aspeed_smc.h"
39 /* CE Type Setting Register */
40 #define R_CONF (0x00 / 4)
41 #define CONF_LEGACY_DISABLE (1 << 31)
42 #define CONF_ENABLE_W4 20
43 #define CONF_ENABLE_W3 19
44 #define CONF_ENABLE_W2 18
45 #define CONF_ENABLE_W1 17
46 #define CONF_ENABLE_W0 16
47 #define CONF_FLASH_TYPE4 8
48 #define CONF_FLASH_TYPE3 6
49 #define CONF_FLASH_TYPE2 4
50 #define CONF_FLASH_TYPE1 2
51 #define CONF_FLASH_TYPE0 0
52 #define CONF_FLASH_TYPE_NOR 0x0
53 #define CONF_FLASH_TYPE_NAND 0x1
54 #define CONF_FLASH_TYPE_SPI 0x2 /* AST2600 is SPI only */
56 /* CE Control Register */
57 #define R_CE_CTRL (0x04 / 4)
58 #define CTRL_EXTENDED4 4 /* 32 bit addressing for SPI */
59 #define CTRL_EXTENDED3 3 /* 32 bit addressing for SPI */
60 #define CTRL_EXTENDED2 2 /* 32 bit addressing for SPI */
61 #define CTRL_EXTENDED1 1 /* 32 bit addressing for SPI */
62 #define CTRL_EXTENDED0 0 /* 32 bit addressing for SPI */
64 /* Interrupt Control and Status Register */
65 #define R_INTR_CTRL (0x08 / 4)
66 #define INTR_CTRL_DMA_STATUS (1 << 11)
67 #define INTR_CTRL_CMD_ABORT_STATUS (1 << 10)
68 #define INTR_CTRL_WRITE_PROTECT_STATUS (1 << 9)
69 #define INTR_CTRL_DMA_EN (1 << 3)
70 #define INTR_CTRL_CMD_ABORT_EN (1 << 2)
71 #define INTR_CTRL_WRITE_PROTECT_EN (1 << 1)
73 /* Command Control Register */
74 #define R_CE_CMD_CTRL (0x0C / 4)
75 #define CTRL_ADDR_BYTE0_DISABLE_SHIFT 4
76 #define CTRL_DATA_BYTE0_DISABLE_SHIFT 0
78 #define aspeed_smc_addr_byte_enabled(s, i) \
79 (!((s)->regs[R_CE_CMD_CTRL] & (1 << (CTRL_ADDR_BYTE0_DISABLE_SHIFT + (i)))))
80 #define aspeed_smc_data_byte_enabled(s, i) \
81 (!((s)->regs[R_CE_CMD_CTRL] & (1 << (CTRL_DATA_BYTE0_DISABLE_SHIFT + (i)))))
83 /* CEx Control Register */
84 #define R_CTRL0 (0x10 / 4)
85 #define CTRL_IO_QPI (1 << 31)
86 #define CTRL_IO_QUAD_DATA (1 << 30)
87 #define CTRL_IO_DUAL_DATA (1 << 29)
88 #define CTRL_IO_DUAL_ADDR_DATA (1 << 28) /* Includes dummies */
89 #define CTRL_IO_QUAD_ADDR_DATA (1 << 28) /* Includes dummies */
90 #define CTRL_CMD_SHIFT 16
91 #define CTRL_CMD_MASK 0xff
92 #define CTRL_DUMMY_HIGH_SHIFT 14
93 #define CTRL_AST2400_SPI_4BYTE (1 << 13)
94 #define CE_CTRL_CLOCK_FREQ_SHIFT 8
95 #define CE_CTRL_CLOCK_FREQ_MASK 0xf
96 #define CE_CTRL_CLOCK_FREQ(div) \
97 (((div) & CE_CTRL_CLOCK_FREQ_MASK) << CE_CTRL_CLOCK_FREQ_SHIFT)
98 #define CTRL_DUMMY_LOW_SHIFT 6 /* 2 bits [7:6] */
99 #define CTRL_CE_STOP_ACTIVE (1 << 2)
100 #define CTRL_CMD_MODE_MASK 0x3
101 #define CTRL_READMODE 0x0
102 #define CTRL_FREADMODE 0x1
103 #define CTRL_WRITEMODE 0x2
104 #define CTRL_USERMODE 0x3
105 #define R_CTRL1 (0x14 / 4)
106 #define R_CTRL2 (0x18 / 4)
107 #define R_CTRL3 (0x1C / 4)
108 #define R_CTRL4 (0x20 / 4)
110 /* CEx Segment Address Register */
111 #define R_SEG_ADDR0 (0x30 / 4)
112 #define SEG_END_SHIFT 24 /* 8MB units */
113 #define SEG_END_MASK 0xff
114 #define SEG_START_SHIFT 16 /* address bit [A29-A23] */
115 #define SEG_START_MASK 0xff
116 #define R_SEG_ADDR1 (0x34 / 4)
117 #define R_SEG_ADDR2 (0x38 / 4)
118 #define R_SEG_ADDR3 (0x3C / 4)
119 #define R_SEG_ADDR4 (0x40 / 4)
121 /* Misc Control Register #1 */
122 #define R_MISC_CTRL1 (0x50 / 4)
124 /* SPI dummy cycle data */
125 #define R_DUMMY_DATA (0x54 / 4)
127 /* FMC_WDT2 Control/Status Register for Alternate Boot (AST2600) */
128 #define R_FMC_WDT2_CTRL (0x64 / 4)
129 #define FMC_WDT2_CTRL_ALT_BOOT_MODE BIT(6) /* O: 2 chips 1: 1 chip */
130 #define FMC_WDT2_CTRL_SINGLE_BOOT_MODE BIT(5)
131 #define FMC_WDT2_CTRL_BOOT_SOURCE BIT(4) /* O: primary 1: alternate */
132 #define FMC_WDT2_CTRL_EN BIT(0)
134 /* DMA Control/Status Register */
135 #define R_DMA_CTRL (0x80 / 4)
136 #define DMA_CTRL_REQUEST (1 << 31)
137 #define DMA_CTRL_GRANT (1 << 30)
138 #define DMA_CTRL_DELAY_MASK 0xf
139 #define DMA_CTRL_DELAY_SHIFT 8
140 #define DMA_CTRL_FREQ_MASK 0xf
141 #define DMA_CTRL_FREQ_SHIFT 4
142 #define DMA_CTRL_CALIB (1 << 3)
143 #define DMA_CTRL_CKSUM (1 << 2)
144 #define DMA_CTRL_WRITE (1 << 1)
145 #define DMA_CTRL_ENABLE (1 << 0)
147 /* DMA Flash Side Address */
148 #define R_DMA_FLASH_ADDR (0x84 / 4)
150 /* DMA DRAM Side Address */
151 #define R_DMA_DRAM_ADDR (0x88 / 4)
153 /* DMA Length Register */
154 #define R_DMA_LEN (0x8C / 4)
156 /* Checksum Calculation Result */
157 #define R_DMA_CHECKSUM (0x90 / 4)
159 /* Read Timing Compensation Register */
160 #define R_TIMINGS (0x94 / 4)
162 /* SPI controller registers and bits (AST2400) */
163 #define R_SPI_CONF (0x00 / 4)
164 #define SPI_CONF_ENABLE_W0 0
165 #define R_SPI_CTRL0 (0x4 / 4)
166 #define R_SPI_MISC_CTRL (0x10 / 4)
167 #define R_SPI_TIMINGS (0x14 / 4)
169 #define ASPEED_SMC_R_SPI_MAX (0x20 / 4)
170 #define ASPEED_SMC_R_SMC_MAX (0x20 / 4)
173 * DMA DRAM addresses should be 4 bytes aligned and the valid address
174 * range is 0x40000000 - 0x5FFFFFFF (AST2400)
175 * 0x80000000 - 0xBFFFFFFF (AST2500)
177 * DMA flash addresses should be 4 bytes aligned and the valid address
178 * range is 0x20000000 - 0x2FFFFFFF.
180 * DMA length is from 4 bytes to 32MB
182 * 0x7FFFFF: 32M bytes
184 #define DMA_DRAM_ADDR(asc, val) ((val) & (asc)->dma_dram_mask)
185 #define DMA_FLASH_ADDR(asc, val) ((val) & (asc)->dma_flash_mask)
186 #define DMA_LENGTH(val) ((val) & 0x01FFFFFC)
189 #define SPI_OP_READ 0x03 /* Read data bytes (low frequency) */
191 #define SNOOP_OFF 0xFF
192 #define SNOOP_START 0x0
195 * Default segments mapping addresses and size for each peripheral per
196 * controller. These can be changed when board is initialized with the
197 * Segment Address Registers.
199 static const AspeedSegments aspeed_2500_spi1_segments
[];
200 static const AspeedSegments aspeed_2500_spi2_segments
[];
202 #define ASPEED_SMC_FEATURE_DMA 0x1
203 #define ASPEED_SMC_FEATURE_DMA_GRANT 0x2
204 #define ASPEED_SMC_FEATURE_WDT_CONTROL 0x4
206 static inline bool aspeed_smc_has_dma(const AspeedSMCClass
*asc
)
208 return !!(asc
->features
& ASPEED_SMC_FEATURE_DMA
);
211 static inline bool aspeed_smc_has_wdt_control(const AspeedSMCClass
*asc
)
213 return !!(asc
->features
& ASPEED_SMC_FEATURE_WDT_CONTROL
);
216 #define aspeed_smc_error(fmt, ...) \
217 qemu_log_mask(LOG_GUEST_ERROR, "%s: " fmt "\n", __func__, ## __VA_ARGS__)
219 static bool aspeed_smc_flash_overlap(const AspeedSMCState
*s
,
220 const AspeedSegments
*new,
223 AspeedSMCClass
*asc
= ASPEED_SMC_GET_CLASS(s
);
227 for (i
= 0; i
< asc
->max_peripherals
; i
++) {
232 asc
->reg_to_segment(s
, s
->regs
[R_SEG_ADDR0
+ i
], &seg
);
234 if (new->addr
+ new->size
> seg
.addr
&&
235 new->addr
< seg
.addr
+ seg
.size
) {
236 aspeed_smc_error("new segment CS%d [ 0x%"
237 HWADDR_PRIx
" - 0x%"HWADDR_PRIx
" ] overlaps with "
238 "CS%d [ 0x%"HWADDR_PRIx
" - 0x%"HWADDR_PRIx
" ]",
239 cs
, new->addr
, new->addr
+ new->size
,
240 i
, seg
.addr
, seg
.addr
+ seg
.size
);
247 static void aspeed_smc_flash_set_segment_region(AspeedSMCState
*s
, int cs
,
250 AspeedSMCClass
*asc
= ASPEED_SMC_GET_CLASS(s
);
251 AspeedSMCFlash
*fl
= &s
->flashes
[cs
];
254 asc
->reg_to_segment(s
, regval
, &seg
);
256 memory_region_transaction_begin();
257 memory_region_set_size(&fl
->mmio
, seg
.size
);
258 memory_region_set_address(&fl
->mmio
, seg
.addr
- asc
->flash_window_base
);
259 memory_region_set_enabled(&fl
->mmio
, !!seg
.size
);
260 memory_region_transaction_commit();
262 s
->regs
[R_SEG_ADDR0
+ cs
] = regval
;
265 static void aspeed_smc_flash_set_segment(AspeedSMCState
*s
, int cs
,
268 AspeedSMCClass
*asc
= ASPEED_SMC_GET_CLASS(s
);
271 asc
->reg_to_segment(s
, new, &seg
);
273 trace_aspeed_smc_flash_set_segment(cs
, new, seg
.addr
, seg
.addr
+ seg
.size
);
275 /* The start address of CS0 is read-only */
276 if (cs
== 0 && seg
.addr
!= asc
->flash_window_base
) {
277 aspeed_smc_error("Tried to change CS0 start address to 0x%"
278 HWADDR_PRIx
, seg
.addr
);
279 seg
.addr
= asc
->flash_window_base
;
280 new = asc
->segment_to_reg(s
, &seg
);
284 * The end address of the AST2500 spi controllers is also
287 if ((asc
->segments
== aspeed_2500_spi1_segments
||
288 asc
->segments
== aspeed_2500_spi2_segments
) &&
289 cs
== asc
->max_peripherals
&&
290 seg
.addr
+ seg
.size
!= asc
->segments
[cs
].addr
+
291 asc
->segments
[cs
].size
) {
292 aspeed_smc_error("Tried to change CS%d end address to 0x%"
293 HWADDR_PRIx
, cs
, seg
.addr
+ seg
.size
);
294 seg
.size
= asc
->segments
[cs
].addr
+ asc
->segments
[cs
].size
-
296 new = asc
->segment_to_reg(s
, &seg
);
299 /* Keep the segment in the overall flash window */
301 (seg
.addr
+ seg
.size
<= asc
->flash_window_base
||
302 seg
.addr
> asc
->flash_window_base
+ asc
->flash_window_size
)) {
303 aspeed_smc_error("new segment for CS%d is invalid : "
304 "[ 0x%"HWADDR_PRIx
" - 0x%"HWADDR_PRIx
" ]",
305 cs
, seg
.addr
, seg
.addr
+ seg
.size
);
309 /* Check start address vs. alignment */
310 if (seg
.size
&& !QEMU_IS_ALIGNED(seg
.addr
, seg
.size
)) {
311 aspeed_smc_error("new segment for CS%d is not "
312 "aligned : [ 0x%"HWADDR_PRIx
" - 0x%"HWADDR_PRIx
" ]",
313 cs
, seg
.addr
, seg
.addr
+ seg
.size
);
316 /* And segments should not overlap (in the specs) */
317 aspeed_smc_flash_overlap(s
, &seg
, cs
);
319 /* All should be fine now to move the region */
320 aspeed_smc_flash_set_segment_region(s
, cs
, new);
323 static uint64_t aspeed_smc_flash_default_read(void *opaque
, hwaddr addr
,
326 aspeed_smc_error("To 0x%" HWADDR_PRIx
" of size %u" PRIx64
, addr
, size
);
330 static void aspeed_smc_flash_default_write(void *opaque
, hwaddr addr
,
331 uint64_t data
, unsigned size
)
333 aspeed_smc_error("To 0x%" HWADDR_PRIx
" of size %u: 0x%" PRIx64
,
337 static const MemoryRegionOps aspeed_smc_flash_default_ops
= {
338 .read
= aspeed_smc_flash_default_read
,
339 .write
= aspeed_smc_flash_default_write
,
340 .endianness
= DEVICE_LITTLE_ENDIAN
,
342 .min_access_size
= 1,
343 .max_access_size
= 4,
347 static inline int aspeed_smc_flash_mode(const AspeedSMCFlash
*fl
)
349 const AspeedSMCState
*s
= fl
->controller
;
351 return s
->regs
[s
->r_ctrl0
+ fl
->cs
] & CTRL_CMD_MODE_MASK
;
354 static inline bool aspeed_smc_is_writable(const AspeedSMCFlash
*fl
)
356 const AspeedSMCState
*s
= fl
->controller
;
358 return s
->regs
[s
->r_conf
] & (1 << (s
->conf_enable_w0
+ fl
->cs
));
361 static inline int aspeed_smc_flash_cmd(const AspeedSMCFlash
*fl
)
363 const AspeedSMCState
*s
= fl
->controller
;
364 int cmd
= (s
->regs
[s
->r_ctrl0
+ fl
->cs
] >> CTRL_CMD_SHIFT
) & CTRL_CMD_MASK
;
367 * In read mode, the default SPI command is READ (0x3). In other
368 * modes, the command should necessarily be defined
370 * TODO: add support for READ4 (0x13) on AST2600
372 if (aspeed_smc_flash_mode(fl
) == CTRL_READMODE
) {
377 aspeed_smc_error("no command defined for mode %d",
378 aspeed_smc_flash_mode(fl
));
384 static inline int aspeed_smc_flash_addr_width(const AspeedSMCFlash
*fl
)
386 const AspeedSMCState
*s
= fl
->controller
;
387 AspeedSMCClass
*asc
= ASPEED_SMC_GET_CLASS(s
);
389 if (asc
->addr_width
) {
390 return asc
->addr_width(s
);
392 return s
->regs
[s
->r_ce_ctrl
] & (1 << (CTRL_EXTENDED0
+ fl
->cs
)) ? 4 : 3;
396 static void aspeed_smc_flash_do_select(AspeedSMCFlash
*fl
, bool unselect
)
398 AspeedSMCState
*s
= fl
->controller
;
400 trace_aspeed_smc_flash_select(fl
->cs
, unselect
? "un" : "");
402 qemu_set_irq(s
->cs_lines
[fl
->cs
], unselect
);
405 static void aspeed_smc_flash_select(AspeedSMCFlash
*fl
)
407 aspeed_smc_flash_do_select(fl
, false);
410 static void aspeed_smc_flash_unselect(AspeedSMCFlash
*fl
)
412 aspeed_smc_flash_do_select(fl
, true);
415 static uint32_t aspeed_smc_check_segment_addr(const AspeedSMCFlash
*fl
,
418 const AspeedSMCState
*s
= fl
->controller
;
419 AspeedSMCClass
*asc
= ASPEED_SMC_GET_CLASS(s
);
422 asc
->reg_to_segment(s
, s
->regs
[R_SEG_ADDR0
+ fl
->cs
], &seg
);
423 if ((addr
% seg
.size
) != addr
) {
424 aspeed_smc_error("invalid address 0x%08x for CS%d segment : "
425 "[ 0x%"HWADDR_PRIx
" - 0x%"HWADDR_PRIx
" ]",
426 addr
, fl
->cs
, seg
.addr
, seg
.addr
+ seg
.size
);
433 static int aspeed_smc_flash_dummies(const AspeedSMCFlash
*fl
)
435 const AspeedSMCState
*s
= fl
->controller
;
436 uint32_t r_ctrl0
= s
->regs
[s
->r_ctrl0
+ fl
->cs
];
437 uint32_t dummy_high
= (r_ctrl0
>> CTRL_DUMMY_HIGH_SHIFT
) & 0x1;
438 uint32_t dummy_low
= (r_ctrl0
>> CTRL_DUMMY_LOW_SHIFT
) & 0x3;
439 uint32_t dummies
= ((dummy_high
<< 2) | dummy_low
) * 8;
441 if (r_ctrl0
& CTRL_IO_DUAL_ADDR_DATA
) {
448 static void aspeed_smc_flash_setup(AspeedSMCFlash
*fl
, uint32_t addr
)
450 const AspeedSMCState
*s
= fl
->controller
;
451 uint8_t cmd
= aspeed_smc_flash_cmd(fl
);
452 int i
= aspeed_smc_flash_addr_width(fl
);
454 /* Flash access can not exceed CS segment */
455 addr
= aspeed_smc_check_segment_addr(fl
, addr
);
457 ssi_transfer(s
->spi
, cmd
);
459 if (aspeed_smc_addr_byte_enabled(s
, i
)) {
460 ssi_transfer(s
->spi
, (addr
>> (i
* 8)) & 0xff);
465 * Use fake transfers to model dummy bytes. The value should
466 * be configured to some non-zero value in fast read mode and
467 * zero in read mode. But, as the HW allows inconsistent
468 * settings, let's check for fast read mode.
470 if (aspeed_smc_flash_mode(fl
) == CTRL_FREADMODE
) {
471 for (i
= 0; i
< aspeed_smc_flash_dummies(fl
); i
++) {
472 ssi_transfer(fl
->controller
->spi
, s
->regs
[R_DUMMY_DATA
] & 0xff);
477 static uint64_t aspeed_smc_flash_read(void *opaque
, hwaddr addr
, unsigned size
)
479 AspeedSMCFlash
*fl
= opaque
;
480 AspeedSMCState
*s
= fl
->controller
;
484 switch (aspeed_smc_flash_mode(fl
)) {
486 for (i
= 0; i
< size
; i
++) {
487 ret
|= ssi_transfer(s
->spi
, 0x0) << (8 * i
);
492 aspeed_smc_flash_select(fl
);
493 aspeed_smc_flash_setup(fl
, addr
);
495 for (i
= 0; i
< size
; i
++) {
496 ret
|= ssi_transfer(s
->spi
, 0x0) << (8 * i
);
499 aspeed_smc_flash_unselect(fl
);
502 aspeed_smc_error("invalid flash mode %d", aspeed_smc_flash_mode(fl
));
505 trace_aspeed_smc_flash_read(fl
->cs
, addr
, size
, ret
,
506 aspeed_smc_flash_mode(fl
));
511 * TODO (clg@kaod.org): stolen from xilinx_spips.c. Should move to a
512 * common include header.
515 READ
= 0x3, READ_4
= 0x13,
516 FAST_READ
= 0xb, FAST_READ_4
= 0x0c,
517 DOR
= 0x3b, DOR_4
= 0x3c,
518 QOR
= 0x6b, QOR_4
= 0x6c,
519 DIOR
= 0xbb, DIOR_4
= 0xbc,
520 QIOR
= 0xeb, QIOR_4
= 0xec,
522 PP
= 0x2, PP_4
= 0x12,
524 QPP
= 0x32, QPP_4
= 0x34,
527 static int aspeed_smc_num_dummies(uint8_t command
)
529 switch (command
) { /* check for dummies */
530 case READ
: /* no dummy bytes/cycles */
556 static bool aspeed_smc_do_snoop(AspeedSMCFlash
*fl
, uint64_t data
,
559 AspeedSMCState
*s
= fl
->controller
;
560 uint8_t addr_width
= aspeed_smc_flash_addr_width(fl
);
562 trace_aspeed_smc_do_snoop(fl
->cs
, s
->snoop_index
, s
->snoop_dummies
,
563 (uint8_t) data
& 0xff);
565 if (s
->snoop_index
== SNOOP_OFF
) {
566 return false; /* Do nothing */
568 } else if (s
->snoop_index
== SNOOP_START
) {
569 uint8_t cmd
= data
& 0xff;
570 int ndummies
= aspeed_smc_num_dummies(cmd
);
573 * No dummy cycles are expected with the current command. Turn
574 * off snooping and let the transfer proceed normally.
577 s
->snoop_index
= SNOOP_OFF
;
581 s
->snoop_dummies
= ndummies
* 8;
583 } else if (s
->snoop_index
>= addr_width
+ 1) {
585 /* The SPI transfer has reached the dummy cycles sequence */
586 for (; s
->snoop_dummies
; s
->snoop_dummies
--) {
587 ssi_transfer(s
->spi
, s
->regs
[R_DUMMY_DATA
] & 0xff);
590 /* If no more dummy cycles are expected, turn off snooping */
591 if (!s
->snoop_dummies
) {
592 s
->snoop_index
= SNOOP_OFF
;
594 s
->snoop_index
+= size
;
598 * Dummy cycles have been faked already. Ignore the current
604 s
->snoop_index
+= size
;
608 static void aspeed_smc_flash_write(void *opaque
, hwaddr addr
, uint64_t data
,
611 AspeedSMCFlash
*fl
= opaque
;
612 AspeedSMCState
*s
= fl
->controller
;
615 trace_aspeed_smc_flash_write(fl
->cs
, addr
, size
, data
,
616 aspeed_smc_flash_mode(fl
));
618 if (!aspeed_smc_is_writable(fl
)) {
619 aspeed_smc_error("flash is not writable at 0x%" HWADDR_PRIx
, addr
);
623 switch (aspeed_smc_flash_mode(fl
)) {
625 if (aspeed_smc_do_snoop(fl
, data
, size
)) {
629 for (i
= 0; i
< size
; i
++) {
630 ssi_transfer(s
->spi
, (data
>> (8 * i
)) & 0xff);
634 aspeed_smc_flash_select(fl
);
635 aspeed_smc_flash_setup(fl
, addr
);
637 for (i
= 0; i
< size
; i
++) {
638 ssi_transfer(s
->spi
, (data
>> (8 * i
)) & 0xff);
641 aspeed_smc_flash_unselect(fl
);
644 aspeed_smc_error("invalid flash mode %d", aspeed_smc_flash_mode(fl
));
648 static const MemoryRegionOps aspeed_smc_flash_ops
= {
649 .read
= aspeed_smc_flash_read
,
650 .write
= aspeed_smc_flash_write
,
651 .endianness
= DEVICE_LITTLE_ENDIAN
,
653 .min_access_size
= 1,
654 .max_access_size
= 4,
658 static void aspeed_smc_flash_update_ctrl(AspeedSMCFlash
*fl
, uint32_t value
)
660 AspeedSMCState
*s
= fl
->controller
;
663 /* User mode selects the CS, other modes unselect */
664 unselect
= (value
& CTRL_CMD_MODE_MASK
) != CTRL_USERMODE
;
666 /* A change of CTRL_CE_STOP_ACTIVE from 0 to 1, unselects the CS */
667 if (!(s
->regs
[s
->r_ctrl0
+ fl
->cs
] & CTRL_CE_STOP_ACTIVE
) &&
668 value
& CTRL_CE_STOP_ACTIVE
) {
672 s
->regs
[s
->r_ctrl0
+ fl
->cs
] = value
;
674 s
->snoop_index
= unselect
? SNOOP_OFF
: SNOOP_START
;
676 aspeed_smc_flash_do_select(fl
, unselect
);
679 static void aspeed_smc_reset(DeviceState
*d
)
681 AspeedSMCState
*s
= ASPEED_SMC(d
);
682 AspeedSMCClass
*asc
= ASPEED_SMC_GET_CLASS(s
);
686 memcpy(s
->regs
, asc
->resets
, sizeof s
->regs
);
688 memset(s
->regs
, 0, sizeof s
->regs
);
691 /* Unselect all peripherals */
692 for (i
= 0; i
< s
->num_cs
; ++i
) {
693 s
->regs
[s
->r_ctrl0
+ i
] |= CTRL_CE_STOP_ACTIVE
;
694 qemu_set_irq(s
->cs_lines
[i
], true);
697 /* setup the default segment register values and regions for all */
698 for (i
= 0; i
< asc
->max_peripherals
; ++i
) {
699 aspeed_smc_flash_set_segment_region(s
, i
,
700 asc
->segment_to_reg(s
, &asc
->segments
[i
]));
703 s
->snoop_index
= SNOOP_OFF
;
704 s
->snoop_dummies
= 0;
707 static uint64_t aspeed_smc_read(void *opaque
, hwaddr addr
, unsigned int size
)
709 AspeedSMCState
*s
= ASPEED_SMC(opaque
);
710 AspeedSMCClass
*asc
= ASPEED_SMC_GET_CLASS(opaque
);
714 if (addr
== s
->r_conf
||
715 (addr
>= s
->r_timings
&&
716 addr
< s
->r_timings
+ asc
->nregs_timings
) ||
717 addr
== s
->r_ce_ctrl
||
718 addr
== R_CE_CMD_CTRL
||
719 addr
== R_INTR_CTRL
||
720 addr
== R_DUMMY_DATA
||
721 (aspeed_smc_has_wdt_control(asc
) && addr
== R_FMC_WDT2_CTRL
) ||
722 (aspeed_smc_has_dma(asc
) && addr
== R_DMA_CTRL
) ||
723 (aspeed_smc_has_dma(asc
) && addr
== R_DMA_FLASH_ADDR
) ||
724 (aspeed_smc_has_dma(asc
) && addr
== R_DMA_DRAM_ADDR
) ||
725 (aspeed_smc_has_dma(asc
) && addr
== R_DMA_LEN
) ||
726 (aspeed_smc_has_dma(asc
) && addr
== R_DMA_CHECKSUM
) ||
727 (addr
>= R_SEG_ADDR0
&&
728 addr
< R_SEG_ADDR0
+ asc
->max_peripherals
) ||
729 (addr
>= s
->r_ctrl0
&& addr
< s
->r_ctrl0
+ asc
->max_peripherals
)) {
731 trace_aspeed_smc_read(addr
<< 2, size
, s
->regs
[addr
]);
733 return s
->regs
[addr
];
735 qemu_log_mask(LOG_UNIMP
, "%s: not implemented: 0x%" HWADDR_PRIx
"\n",
741 static uint8_t aspeed_smc_hclk_divisor(uint8_t hclk_mask
)
743 /* HCLK/1 .. HCLK/16 */
744 const uint8_t hclk_divisors
[] = {
745 15, 7, 14, 6, 13, 5, 12, 4, 11, 3, 10, 2, 9, 1, 8, 0
749 for (i
= 0; i
< ARRAY_SIZE(hclk_divisors
); i
++) {
750 if (hclk_mask
== hclk_divisors
[i
]) {
755 aspeed_smc_error("invalid HCLK mask %x", hclk_mask
);
760 * When doing calibration, the SPI clock rate in the CE0 Control
761 * Register and the read delay cycles in the Read Timing Compensation
762 * Register are set using bit[11:4] of the DMA Control Register.
764 static void aspeed_smc_dma_calibration(AspeedSMCState
*s
)
767 (s
->regs
[R_DMA_CTRL
] >> DMA_CTRL_DELAY_SHIFT
) & DMA_CTRL_DELAY_MASK
;
769 (s
->regs
[R_DMA_CTRL
] >> DMA_CTRL_FREQ_SHIFT
) & DMA_CTRL_FREQ_MASK
;
770 uint8_t hclk_div
= aspeed_smc_hclk_divisor(hclk_mask
);
771 uint32_t hclk_shift
= (hclk_div
- 1) << 2;
775 * The Read Timing Compensation Register values apply to all CS on
776 * the SPI bus and only HCLK/1 - HCLK/5 can have tunable delays
778 if (hclk_div
&& hclk_div
< 6) {
779 s
->regs
[s
->r_timings
] &= ~(0xf << hclk_shift
);
780 s
->regs
[s
->r_timings
] |= delay
<< hclk_shift
;
784 * TODO: compute the CS from the DMA address and the segment
785 * registers. This is not really a problem for now because the
786 * Timing Register values apply to all CS and software uses CS0 to
790 s
->regs
[s
->r_ctrl0
+ cs
] &=
791 ~(CE_CTRL_CLOCK_FREQ_MASK
<< CE_CTRL_CLOCK_FREQ_SHIFT
);
792 s
->regs
[s
->r_ctrl0
+ cs
] |= CE_CTRL_CLOCK_FREQ(hclk_div
);
796 * Emulate read errors in the DMA Checksum Register for high
797 * frequencies and optimistic settings of the Read Timing Compensation
798 * Register. This will help in tuning the SPI timing calibration
801 static bool aspeed_smc_inject_read_failure(AspeedSMCState
*s
)
804 (s
->regs
[R_DMA_CTRL
] >> DMA_CTRL_DELAY_SHIFT
) & DMA_CTRL_DELAY_MASK
;
806 (s
->regs
[R_DMA_CTRL
] >> DMA_CTRL_FREQ_SHIFT
) & DMA_CTRL_FREQ_MASK
;
809 * Typical values of a palmetto-bmc machine.
811 switch (aspeed_smc_hclk_divisor(hclk_mask
)) {
814 case 3: /* at least one HCLK cycle delay */
815 return (delay
& 0x7) < 1;
816 case 2: /* at least two HCLK cycle delay */
817 return (delay
& 0x7) < 2;
818 case 1: /* (> 100MHz) is above the max freq of the controller */
821 g_assert_not_reached();
826 * Accumulate the result of the reads to provide a checksum that will
827 * be used to validate the read timing settings.
829 static void aspeed_smc_dma_checksum(AspeedSMCState
*s
)
834 if (s
->regs
[R_DMA_CTRL
] & DMA_CTRL_WRITE
) {
835 aspeed_smc_error("invalid direction for DMA checksum");
839 if (s
->regs
[R_DMA_CTRL
] & DMA_CTRL_CALIB
) {
840 aspeed_smc_dma_calibration(s
);
843 while (s
->regs
[R_DMA_LEN
]) {
844 data
= address_space_ldl_le(&s
->flash_as
, s
->regs
[R_DMA_FLASH_ADDR
],
845 MEMTXATTRS_UNSPECIFIED
, &result
);
846 if (result
!= MEMTX_OK
) {
847 aspeed_smc_error("Flash read failed @%08x",
848 s
->regs
[R_DMA_FLASH_ADDR
]);
851 trace_aspeed_smc_dma_checksum(s
->regs
[R_DMA_FLASH_ADDR
], data
);
854 * When the DMA is on-going, the DMA registers are updated
855 * with the current working addresses and length.
857 s
->regs
[R_DMA_CHECKSUM
] += data
;
858 s
->regs
[R_DMA_FLASH_ADDR
] += 4;
859 s
->regs
[R_DMA_LEN
] -= 4;
862 if (s
->inject_failure
&& aspeed_smc_inject_read_failure(s
)) {
863 s
->regs
[R_DMA_CHECKSUM
] = 0xbadc0de;
868 static void aspeed_smc_dma_rw(AspeedSMCState
*s
)
873 trace_aspeed_smc_dma_rw(s
->regs
[R_DMA_CTRL
] & DMA_CTRL_WRITE
?
875 s
->regs
[R_DMA_FLASH_ADDR
],
876 s
->regs
[R_DMA_DRAM_ADDR
],
878 while (s
->regs
[R_DMA_LEN
]) {
879 if (s
->regs
[R_DMA_CTRL
] & DMA_CTRL_WRITE
) {
880 data
= address_space_ldl_le(&s
->dram_as
, s
->regs
[R_DMA_DRAM_ADDR
],
881 MEMTXATTRS_UNSPECIFIED
, &result
);
882 if (result
!= MEMTX_OK
) {
883 aspeed_smc_error("DRAM read failed @%08x",
884 s
->regs
[R_DMA_DRAM_ADDR
]);
888 address_space_stl_le(&s
->flash_as
, s
->regs
[R_DMA_FLASH_ADDR
],
889 data
, MEMTXATTRS_UNSPECIFIED
, &result
);
890 if (result
!= MEMTX_OK
) {
891 aspeed_smc_error("Flash write failed @%08x",
892 s
->regs
[R_DMA_FLASH_ADDR
]);
896 data
= address_space_ldl_le(&s
->flash_as
, s
->regs
[R_DMA_FLASH_ADDR
],
897 MEMTXATTRS_UNSPECIFIED
, &result
);
898 if (result
!= MEMTX_OK
) {
899 aspeed_smc_error("Flash read failed @%08x",
900 s
->regs
[R_DMA_FLASH_ADDR
]);
904 address_space_stl_le(&s
->dram_as
, s
->regs
[R_DMA_DRAM_ADDR
],
905 data
, MEMTXATTRS_UNSPECIFIED
, &result
);
906 if (result
!= MEMTX_OK
) {
907 aspeed_smc_error("DRAM write failed @%08x",
908 s
->regs
[R_DMA_DRAM_ADDR
]);
914 * When the DMA is on-going, the DMA registers are updated
915 * with the current working addresses and length.
917 s
->regs
[R_DMA_FLASH_ADDR
] += 4;
918 s
->regs
[R_DMA_DRAM_ADDR
] += 4;
919 s
->regs
[R_DMA_LEN
] -= 4;
920 s
->regs
[R_DMA_CHECKSUM
] += data
;
924 static void aspeed_smc_dma_stop(AspeedSMCState
*s
)
927 * When the DMA is disabled, INTR_CTRL_DMA_STATUS=0 means the
930 s
->regs
[R_INTR_CTRL
] &= ~INTR_CTRL_DMA_STATUS
;
931 s
->regs
[R_DMA_CHECKSUM
] = 0;
934 * Lower the DMA irq in any case. The IRQ control register could
935 * have been cleared before disabling the DMA.
937 qemu_irq_lower(s
->irq
);
941 * When INTR_CTRL_DMA_STATUS=1, the DMA has completed and a new DMA
942 * can start even if the result of the previous was not collected.
944 static bool aspeed_smc_dma_in_progress(AspeedSMCState
*s
)
946 return s
->regs
[R_DMA_CTRL
] & DMA_CTRL_ENABLE
&&
947 !(s
->regs
[R_INTR_CTRL
] & INTR_CTRL_DMA_STATUS
);
950 static void aspeed_smc_dma_done(AspeedSMCState
*s
)
952 s
->regs
[R_INTR_CTRL
] |= INTR_CTRL_DMA_STATUS
;
953 if (s
->regs
[R_INTR_CTRL
] & INTR_CTRL_DMA_EN
) {
954 qemu_irq_raise(s
->irq
);
958 static void aspeed_smc_dma_ctrl(AspeedSMCState
*s
, uint32_t dma_ctrl
)
960 if (!(dma_ctrl
& DMA_CTRL_ENABLE
)) {
961 s
->regs
[R_DMA_CTRL
] = dma_ctrl
;
963 aspeed_smc_dma_stop(s
);
967 if (aspeed_smc_dma_in_progress(s
)) {
968 aspeed_smc_error("DMA in progress !");
972 s
->regs
[R_DMA_CTRL
] = dma_ctrl
;
974 if (s
->regs
[R_DMA_CTRL
] & DMA_CTRL_CKSUM
) {
975 aspeed_smc_dma_checksum(s
);
977 aspeed_smc_dma_rw(s
);
980 aspeed_smc_dma_done(s
);
983 static inline bool aspeed_smc_dma_granted(AspeedSMCState
*s
)
985 AspeedSMCClass
*asc
= ASPEED_SMC_GET_CLASS(s
);
987 if (!(asc
->features
& ASPEED_SMC_FEATURE_DMA_GRANT
)) {
991 if (!(s
->regs
[R_DMA_CTRL
] & DMA_CTRL_GRANT
)) {
992 aspeed_smc_error("DMA not granted");
999 static void aspeed_2600_smc_dma_ctrl(AspeedSMCState
*s
, uint32_t dma_ctrl
)
1001 /* Preserve DMA bits */
1002 dma_ctrl
|= s
->regs
[R_DMA_CTRL
] & (DMA_CTRL_REQUEST
| DMA_CTRL_GRANT
);
1004 if (dma_ctrl
== 0xAEED0000) {
1005 /* automatically grant request */
1006 s
->regs
[R_DMA_CTRL
] |= (DMA_CTRL_REQUEST
| DMA_CTRL_GRANT
);
1011 if (dma_ctrl
== 0xDEEA0000) {
1012 s
->regs
[R_DMA_CTRL
] &= ~(DMA_CTRL_REQUEST
| DMA_CTRL_GRANT
);
1016 if (!aspeed_smc_dma_granted(s
)) {
1017 aspeed_smc_error("DMA not granted");
1021 aspeed_smc_dma_ctrl(s
, dma_ctrl
);
1022 s
->regs
[R_DMA_CTRL
] &= ~(DMA_CTRL_REQUEST
| DMA_CTRL_GRANT
);
1025 static void aspeed_smc_write(void *opaque
, hwaddr addr
, uint64_t data
,
1028 AspeedSMCState
*s
= ASPEED_SMC(opaque
);
1029 AspeedSMCClass
*asc
= ASPEED_SMC_GET_CLASS(s
);
1030 uint32_t value
= data
;
1032 trace_aspeed_smc_write(addr
, size
, data
);
1036 if (addr
== s
->r_conf
||
1037 (addr
>= s
->r_timings
&&
1038 addr
< s
->r_timings
+ asc
->nregs_timings
) ||
1039 addr
== s
->r_ce_ctrl
) {
1040 s
->regs
[addr
] = value
;
1041 } else if (addr
>= s
->r_ctrl0
&& addr
< s
->r_ctrl0
+ s
->num_cs
) {
1042 int cs
= addr
- s
->r_ctrl0
;
1043 aspeed_smc_flash_update_ctrl(&s
->flashes
[cs
], value
);
1044 } else if (addr
>= R_SEG_ADDR0
&&
1045 addr
< R_SEG_ADDR0
+ asc
->max_peripherals
) {
1046 int cs
= addr
- R_SEG_ADDR0
;
1048 if (value
!= s
->regs
[R_SEG_ADDR0
+ cs
]) {
1049 aspeed_smc_flash_set_segment(s
, cs
, value
);
1051 } else if (addr
== R_CE_CMD_CTRL
) {
1052 s
->regs
[addr
] = value
& 0xff;
1053 } else if (addr
== R_DUMMY_DATA
) {
1054 s
->regs
[addr
] = value
& 0xff;
1055 } else if (aspeed_smc_has_wdt_control(asc
) && addr
== R_FMC_WDT2_CTRL
) {
1056 s
->regs
[addr
] = value
& FMC_WDT2_CTRL_EN
;
1057 } else if (addr
== R_INTR_CTRL
) {
1058 s
->regs
[addr
] = value
;
1059 } else if (aspeed_smc_has_dma(asc
) && addr
== R_DMA_CTRL
) {
1060 asc
->dma_ctrl(s
, value
);
1061 } else if (aspeed_smc_has_dma(asc
) && addr
== R_DMA_DRAM_ADDR
&&
1062 aspeed_smc_dma_granted(s
)) {
1063 s
->regs
[addr
] = DMA_DRAM_ADDR(asc
, value
);
1064 } else if (aspeed_smc_has_dma(asc
) && addr
== R_DMA_FLASH_ADDR
&&
1065 aspeed_smc_dma_granted(s
)) {
1066 s
->regs
[addr
] = DMA_FLASH_ADDR(asc
, value
);
1067 } else if (aspeed_smc_has_dma(asc
) && addr
== R_DMA_LEN
&&
1068 aspeed_smc_dma_granted(s
)) {
1069 s
->regs
[addr
] = DMA_LENGTH(value
);
1071 qemu_log_mask(LOG_UNIMP
, "%s: not implemented: 0x%" HWADDR_PRIx
"\n",
1077 static const MemoryRegionOps aspeed_smc_ops
= {
1078 .read
= aspeed_smc_read
,
1079 .write
= aspeed_smc_write
,
1080 .endianness
= DEVICE_LITTLE_ENDIAN
,
1083 static void aspeed_smc_instance_init(Object
*obj
)
1085 AspeedSMCState
*s
= ASPEED_SMC(obj
);
1086 AspeedSMCClass
*asc
= ASPEED_SMC_GET_CLASS(s
);
1089 for (i
= 0; i
< asc
->max_peripherals
; i
++) {
1090 object_initialize_child(obj
, "flash[*]", &s
->flashes
[i
],
1091 TYPE_ASPEED_SMC_FLASH
);
1096 * Initialize the custom address spaces for DMAs
1098 static void aspeed_smc_dma_setup(AspeedSMCState
*s
, Error
**errp
)
1101 error_setg(errp
, TYPE_ASPEED_SMC
": 'dram' link not set");
1105 address_space_init(&s
->flash_as
, &s
->mmio_flash
,
1106 TYPE_ASPEED_SMC
".dma-flash");
1107 address_space_init(&s
->dram_as
, s
->dram_mr
,
1108 TYPE_ASPEED_SMC
".dma-dram");
1111 static void aspeed_smc_realize(DeviceState
*dev
, Error
**errp
)
1113 SysBusDevice
*sbd
= SYS_BUS_DEVICE(dev
);
1114 AspeedSMCState
*s
= ASPEED_SMC(dev
);
1115 AspeedSMCClass
*asc
= ASPEED_SMC_GET_CLASS(s
);
1119 /* keep a copy under AspeedSMCState to speed up accesses */
1120 s
->r_conf
= asc
->r_conf
;
1121 s
->r_ce_ctrl
= asc
->r_ce_ctrl
;
1122 s
->r_ctrl0
= asc
->r_ctrl0
;
1123 s
->r_timings
= asc
->r_timings
;
1124 s
->conf_enable_w0
= asc
->conf_enable_w0
;
1126 /* Enforce some real HW limits */
1127 if (s
->num_cs
> asc
->max_peripherals
) {
1128 aspeed_smc_error("num_cs cannot exceed: %d", asc
->max_peripherals
);
1129 s
->num_cs
= asc
->max_peripherals
;
1132 /* DMA irq. Keep it first for the initialization in the SoC */
1133 sysbus_init_irq(sbd
, &s
->irq
);
1135 s
->spi
= ssi_create_bus(dev
, "spi");
1137 /* Setup cs_lines for peripherals */
1138 s
->cs_lines
= g_new0(qemu_irq
, s
->num_cs
);
1140 for (i
= 0; i
< s
->num_cs
; ++i
) {
1141 sysbus_init_irq(sbd
, &s
->cs_lines
[i
]);
1144 /* The memory region for the controller registers */
1145 memory_region_init_io(&s
->mmio
, OBJECT(s
), &aspeed_smc_ops
, s
,
1146 TYPE_ASPEED_SMC
, asc
->nregs
* 4);
1147 sysbus_init_mmio(sbd
, &s
->mmio
);
1150 * The container memory region representing the address space
1151 * window in which the flash modules are mapped. The size and
1152 * address depends on the SoC model and controller type.
1154 memory_region_init_io(&s
->mmio_flash
, OBJECT(s
),
1155 &aspeed_smc_flash_default_ops
, s
,
1156 TYPE_ASPEED_SMC
".flash",
1157 asc
->flash_window_size
);
1158 memory_region_init_alias(&s
->mmio_flash_alias
, OBJECT(s
),
1159 TYPE_ASPEED_SMC
".flash",
1160 &s
->mmio_flash
, 0, asc
->flash_window_size
);
1161 sysbus_init_mmio(sbd
, &s
->mmio_flash_alias
);
1164 * Let's create a sub memory region for each possible peripheral. All
1165 * have a configurable memory segment in the overall flash mapping
1166 * window of the controller but, there is not necessarily a flash
1167 * module behind to handle the memory accesses. This depends on
1168 * the board configuration.
1170 for (i
= 0; i
< asc
->max_peripherals
; ++i
) {
1171 AspeedSMCFlash
*fl
= &s
->flashes
[i
];
1173 if (!object_property_set_link(OBJECT(fl
), "controller", OBJECT(s
),
1177 if (!object_property_set_uint(OBJECT(fl
), "cs", i
, errp
)) {
1180 if (!sysbus_realize(SYS_BUS_DEVICE(fl
), errp
)) {
1184 memory_region_add_subregion(&s
->mmio_flash
, offset
, &fl
->mmio
);
1185 offset
+= asc
->segments
[i
].size
;
1189 if (aspeed_smc_has_dma(asc
)) {
1190 aspeed_smc_dma_setup(s
, errp
);
1194 static const VMStateDescription vmstate_aspeed_smc
= {
1195 .name
= "aspeed.smc",
1197 .minimum_version_id
= 2,
1198 .fields
= (VMStateField
[]) {
1199 VMSTATE_UINT32_ARRAY(regs
, AspeedSMCState
, ASPEED_SMC_R_MAX
),
1200 VMSTATE_UINT8(snoop_index
, AspeedSMCState
),
1201 VMSTATE_UINT8(snoop_dummies
, AspeedSMCState
),
1202 VMSTATE_END_OF_LIST()
1206 static Property aspeed_smc_properties
[] = {
1207 DEFINE_PROP_UINT32("num-cs", AspeedSMCState
, num_cs
, 1),
1208 DEFINE_PROP_BOOL("inject-failure", AspeedSMCState
, inject_failure
, false),
1209 DEFINE_PROP_LINK("dram", AspeedSMCState
, dram_mr
,
1210 TYPE_MEMORY_REGION
, MemoryRegion
*),
1211 DEFINE_PROP_END_OF_LIST(),
1214 static void aspeed_smc_class_init(ObjectClass
*klass
, void *data
)
1216 DeviceClass
*dc
= DEVICE_CLASS(klass
);
1218 dc
->realize
= aspeed_smc_realize
;
1219 dc
->reset
= aspeed_smc_reset
;
1220 device_class_set_props(dc
, aspeed_smc_properties
);
1221 dc
->vmsd
= &vmstate_aspeed_smc
;
1224 static const TypeInfo aspeed_smc_info
= {
1225 .name
= TYPE_ASPEED_SMC
,
1226 .parent
= TYPE_SYS_BUS_DEVICE
,
1227 .instance_init
= aspeed_smc_instance_init
,
1228 .instance_size
= sizeof(AspeedSMCState
),
1229 .class_size
= sizeof(AspeedSMCClass
),
1230 .class_init
= aspeed_smc_class_init
,
1234 static void aspeed_smc_flash_realize(DeviceState
*dev
, Error
**errp
)
1236 AspeedSMCFlash
*s
= ASPEED_SMC_FLASH(dev
);
1237 AspeedSMCClass
*asc
;
1238 g_autofree
char *name
= g_strdup_printf(TYPE_ASPEED_SMC_FLASH
".%d", s
->cs
);
1240 if (!s
->controller
) {
1241 error_setg(errp
, TYPE_ASPEED_SMC_FLASH
": 'controller' link not set");
1245 asc
= ASPEED_SMC_GET_CLASS(s
->controller
);
1248 * Use the default segment value to size the memory region. This
1249 * can be changed by FW at runtime.
1251 memory_region_init_io(&s
->mmio
, OBJECT(s
), &aspeed_smc_flash_ops
,
1252 s
, name
, asc
->segments
[s
->cs
].size
);
1253 sysbus_init_mmio(SYS_BUS_DEVICE(dev
), &s
->mmio
);
1256 static Property aspeed_smc_flash_properties
[] = {
1257 DEFINE_PROP_UINT8("cs", AspeedSMCFlash
, cs
, 0),
1258 DEFINE_PROP_LINK("controller", AspeedSMCFlash
, controller
, TYPE_ASPEED_SMC
,
1260 DEFINE_PROP_END_OF_LIST(),
1263 static void aspeed_smc_flash_class_init(ObjectClass
*klass
, void *data
)
1265 DeviceClass
*dc
= DEVICE_CLASS(klass
);
1267 dc
->desc
= "Aspeed SMC Flash device region";
1268 dc
->realize
= aspeed_smc_flash_realize
;
1269 device_class_set_props(dc
, aspeed_smc_flash_properties
);
1272 static const TypeInfo aspeed_smc_flash_info
= {
1273 .name
= TYPE_ASPEED_SMC_FLASH
,
1274 .parent
= TYPE_SYS_BUS_DEVICE
,
1275 .instance_size
= sizeof(AspeedSMCFlash
),
1276 .class_init
= aspeed_smc_flash_class_init
,
1280 * The Segment Registers of the AST2400 and AST2500 have a 8MB
1281 * unit. The address range of a flash SPI peripheral is encoded with
1282 * absolute addresses which should be part of the overall controller
1285 static uint32_t aspeed_smc_segment_to_reg(const AspeedSMCState
*s
,
1286 const AspeedSegments
*seg
)
1289 reg
|= ((seg
->addr
>> 23) & SEG_START_MASK
) << SEG_START_SHIFT
;
1290 reg
|= (((seg
->addr
+ seg
->size
) >> 23) & SEG_END_MASK
) << SEG_END_SHIFT
;
1294 static void aspeed_smc_reg_to_segment(const AspeedSMCState
*s
,
1295 uint32_t reg
, AspeedSegments
*seg
)
1297 seg
->addr
= ((reg
>> SEG_START_SHIFT
) & SEG_START_MASK
) << 23;
1298 seg
->size
= (((reg
>> SEG_END_SHIFT
) & SEG_END_MASK
) << 23) - seg
->addr
;
1301 static const AspeedSegments aspeed_2400_smc_segments
[] = {
1302 { 0x10000000, 32 * MiB
},
1305 static void aspeed_2400_smc_class_init(ObjectClass
*klass
, void *data
)
1307 DeviceClass
*dc
= DEVICE_CLASS(klass
);
1308 AspeedSMCClass
*asc
= ASPEED_SMC_CLASS(klass
);
1310 dc
->desc
= "Aspeed 2400 SMC Controller";
1311 asc
->r_conf
= R_CONF
;
1312 asc
->r_ce_ctrl
= R_CE_CTRL
;
1313 asc
->r_ctrl0
= R_CTRL0
;
1314 asc
->r_timings
= R_TIMINGS
;
1315 asc
->nregs_timings
= 1;
1316 asc
->conf_enable_w0
= CONF_ENABLE_W0
;
1317 asc
->max_peripherals
= 1;
1318 asc
->segments
= aspeed_2400_smc_segments
;
1319 asc
->flash_window_base
= 0x10000000;
1320 asc
->flash_window_size
= 0x6000000;
1321 asc
->features
= 0x0;
1322 asc
->nregs
= ASPEED_SMC_R_SMC_MAX
;
1323 asc
->segment_to_reg
= aspeed_smc_segment_to_reg
;
1324 asc
->reg_to_segment
= aspeed_smc_reg_to_segment
;
1325 asc
->dma_ctrl
= aspeed_smc_dma_ctrl
;
1328 static const TypeInfo aspeed_2400_smc_info
= {
1329 .name
= "aspeed.smc-ast2400",
1330 .parent
= TYPE_ASPEED_SMC
,
1331 .class_init
= aspeed_2400_smc_class_init
,
1334 static const uint32_t aspeed_2400_fmc_resets
[ASPEED_SMC_R_MAX
] = {
1336 * CE0 and CE1 types are HW strapped in SCU70. Do it here to
1337 * simplify the model.
1339 [R_CONF
] = CONF_FLASH_TYPE_SPI
<< CONF_FLASH_TYPE0
,
1342 static const AspeedSegments aspeed_2400_fmc_segments
[] = {
1343 { 0x20000000, 64 * MiB
}, /* start address is readonly */
1344 { 0x24000000, 32 * MiB
},
1345 { 0x26000000, 32 * MiB
},
1346 { 0x28000000, 32 * MiB
},
1347 { 0x2A000000, 32 * MiB
}
1350 static void aspeed_2400_fmc_class_init(ObjectClass
*klass
, void *data
)
1352 DeviceClass
*dc
= DEVICE_CLASS(klass
);
1353 AspeedSMCClass
*asc
= ASPEED_SMC_CLASS(klass
);
1355 dc
->desc
= "Aspeed 2400 FMC Controller";
1356 asc
->r_conf
= R_CONF
;
1357 asc
->r_ce_ctrl
= R_CE_CTRL
;
1358 asc
->r_ctrl0
= R_CTRL0
;
1359 asc
->r_timings
= R_TIMINGS
;
1360 asc
->nregs_timings
= 1;
1361 asc
->conf_enable_w0
= CONF_ENABLE_W0
;
1362 asc
->max_peripherals
= 5;
1363 asc
->segments
= aspeed_2400_fmc_segments
;
1364 asc
->resets
= aspeed_2400_fmc_resets
;
1365 asc
->flash_window_base
= 0x20000000;
1366 asc
->flash_window_size
= 0x10000000;
1367 asc
->features
= ASPEED_SMC_FEATURE_DMA
;
1368 asc
->dma_flash_mask
= 0x0FFFFFFC;
1369 asc
->dma_dram_mask
= 0x1FFFFFFC;
1370 asc
->nregs
= ASPEED_SMC_R_MAX
;
1371 asc
->segment_to_reg
= aspeed_smc_segment_to_reg
;
1372 asc
->reg_to_segment
= aspeed_smc_reg_to_segment
;
1373 asc
->dma_ctrl
= aspeed_smc_dma_ctrl
;
1376 static const TypeInfo aspeed_2400_fmc_info
= {
1377 .name
= "aspeed.fmc-ast2400",
1378 .parent
= TYPE_ASPEED_SMC
,
1379 .class_init
= aspeed_2400_fmc_class_init
,
1382 static const AspeedSegments aspeed_2400_spi1_segments
[] = {
1383 { 0x30000000, 64 * MiB
},
1386 static int aspeed_2400_spi1_addr_width(const AspeedSMCState
*s
)
1388 return s
->regs
[R_SPI_CTRL0
] & CTRL_AST2400_SPI_4BYTE
? 4 : 3;
1391 static void aspeed_2400_spi1_class_init(ObjectClass
*klass
, void *data
)
1393 DeviceClass
*dc
= DEVICE_CLASS(klass
);
1394 AspeedSMCClass
*asc
= ASPEED_SMC_CLASS(klass
);
1396 dc
->desc
= "Aspeed 2400 SPI1 Controller";
1397 asc
->r_conf
= R_SPI_CONF
;
1398 asc
->r_ce_ctrl
= 0xff;
1399 asc
->r_ctrl0
= R_SPI_CTRL0
;
1400 asc
->r_timings
= R_SPI_TIMINGS
;
1401 asc
->nregs_timings
= 1;
1402 asc
->conf_enable_w0
= SPI_CONF_ENABLE_W0
;
1403 asc
->max_peripherals
= 1;
1404 asc
->segments
= aspeed_2400_spi1_segments
;
1405 asc
->flash_window_base
= 0x30000000;
1406 asc
->flash_window_size
= 0x10000000;
1407 asc
->features
= 0x0;
1408 asc
->nregs
= ASPEED_SMC_R_SPI_MAX
;
1409 asc
->segment_to_reg
= aspeed_smc_segment_to_reg
;
1410 asc
->reg_to_segment
= aspeed_smc_reg_to_segment
;
1411 asc
->dma_ctrl
= aspeed_smc_dma_ctrl
;
1412 asc
->addr_width
= aspeed_2400_spi1_addr_width
;
1415 static const TypeInfo aspeed_2400_spi1_info
= {
1416 .name
= "aspeed.spi1-ast2400",
1417 .parent
= TYPE_ASPEED_SMC
,
1418 .class_init
= aspeed_2400_spi1_class_init
,
1421 static const uint32_t aspeed_2500_fmc_resets
[ASPEED_SMC_R_MAX
] = {
1422 [R_CONF
] = (CONF_FLASH_TYPE_SPI
<< CONF_FLASH_TYPE0
|
1423 CONF_FLASH_TYPE_SPI
<< CONF_FLASH_TYPE1
),
1426 static const AspeedSegments aspeed_2500_fmc_segments
[] = {
1427 { 0x20000000, 128 * MiB
}, /* start address is readonly */
1428 { 0x28000000, 32 * MiB
},
1429 { 0x2A000000, 32 * MiB
},
1432 static void aspeed_2500_fmc_class_init(ObjectClass
*klass
, void *data
)
1434 DeviceClass
*dc
= DEVICE_CLASS(klass
);
1435 AspeedSMCClass
*asc
= ASPEED_SMC_CLASS(klass
);
1437 dc
->desc
= "Aspeed 2600 FMC Controller";
1438 asc
->r_conf
= R_CONF
;
1439 asc
->r_ce_ctrl
= R_CE_CTRL
;
1440 asc
->r_ctrl0
= R_CTRL0
;
1441 asc
->r_timings
= R_TIMINGS
;
1442 asc
->nregs_timings
= 1;
1443 asc
->conf_enable_w0
= CONF_ENABLE_W0
;
1444 asc
->max_peripherals
= 3;
1445 asc
->segments
= aspeed_2500_fmc_segments
;
1446 asc
->resets
= aspeed_2500_fmc_resets
;
1447 asc
->flash_window_base
= 0x20000000;
1448 asc
->flash_window_size
= 0x10000000;
1449 asc
->features
= ASPEED_SMC_FEATURE_DMA
;
1450 asc
->dma_flash_mask
= 0x0FFFFFFC;
1451 asc
->dma_dram_mask
= 0x3FFFFFFC;
1452 asc
->nregs
= ASPEED_SMC_R_MAX
;
1453 asc
->segment_to_reg
= aspeed_smc_segment_to_reg
;
1454 asc
->reg_to_segment
= aspeed_smc_reg_to_segment
;
1455 asc
->dma_ctrl
= aspeed_smc_dma_ctrl
;
1458 static const TypeInfo aspeed_2500_fmc_info
= {
1459 .name
= "aspeed.fmc-ast2500",
1460 .parent
= TYPE_ASPEED_SMC
,
1461 .class_init
= aspeed_2500_fmc_class_init
,
1464 static const AspeedSegments aspeed_2500_spi1_segments
[] = {
1465 { 0x30000000, 32 * MiB
}, /* start address is readonly */
1466 { 0x32000000, 96 * MiB
}, /* end address is readonly */
1469 static void aspeed_2500_spi1_class_init(ObjectClass
*klass
, void *data
)
1471 DeviceClass
*dc
= DEVICE_CLASS(klass
);
1472 AspeedSMCClass
*asc
= ASPEED_SMC_CLASS(klass
);
1474 dc
->desc
= "Aspeed 2600 SPI1 Controller";
1475 asc
->r_conf
= R_CONF
;
1476 asc
->r_ce_ctrl
= R_CE_CTRL
;
1477 asc
->r_ctrl0
= R_CTRL0
;
1478 asc
->r_timings
= R_TIMINGS
;
1479 asc
->nregs_timings
= 1;
1480 asc
->conf_enable_w0
= CONF_ENABLE_W0
;
1481 asc
->max_peripherals
= 2;
1482 asc
->segments
= aspeed_2500_spi1_segments
;
1483 asc
->flash_window_base
= 0x30000000;
1484 asc
->flash_window_size
= 0x8000000;
1485 asc
->features
= 0x0;
1486 asc
->nregs
= ASPEED_SMC_R_MAX
;
1487 asc
->segment_to_reg
= aspeed_smc_segment_to_reg
;
1488 asc
->reg_to_segment
= aspeed_smc_reg_to_segment
;
1489 asc
->dma_ctrl
= aspeed_smc_dma_ctrl
;
1492 static const TypeInfo aspeed_2500_spi1_info
= {
1493 .name
= "aspeed.spi1-ast2500",
1494 .parent
= TYPE_ASPEED_SMC
,
1495 .class_init
= aspeed_2500_spi1_class_init
,
1498 static const AspeedSegments aspeed_2500_spi2_segments
[] = {
1499 { 0x38000000, 32 * MiB
}, /* start address is readonly */
1500 { 0x3A000000, 96 * MiB
}, /* end address is readonly */
1503 static void aspeed_2500_spi2_class_init(ObjectClass
*klass
, void *data
)
1505 DeviceClass
*dc
= DEVICE_CLASS(klass
);
1506 AspeedSMCClass
*asc
= ASPEED_SMC_CLASS(klass
);
1508 dc
->desc
= "Aspeed 2600 SPI2 Controller";
1509 asc
->r_conf
= R_CONF
;
1510 asc
->r_ce_ctrl
= R_CE_CTRL
;
1511 asc
->r_ctrl0
= R_CTRL0
;
1512 asc
->r_timings
= R_TIMINGS
;
1513 asc
->nregs_timings
= 1;
1514 asc
->conf_enable_w0
= CONF_ENABLE_W0
;
1515 asc
->max_peripherals
= 2;
1516 asc
->segments
= aspeed_2500_spi2_segments
;
1517 asc
->flash_window_base
= 0x38000000;
1518 asc
->flash_window_size
= 0x8000000;
1519 asc
->features
= 0x0;
1520 asc
->nregs
= ASPEED_SMC_R_MAX
;
1521 asc
->segment_to_reg
= aspeed_smc_segment_to_reg
;
1522 asc
->reg_to_segment
= aspeed_smc_reg_to_segment
;
1523 asc
->dma_ctrl
= aspeed_smc_dma_ctrl
;
1526 static const TypeInfo aspeed_2500_spi2_info
= {
1527 .name
= "aspeed.spi2-ast2500",
1528 .parent
= TYPE_ASPEED_SMC
,
1529 .class_init
= aspeed_2500_spi2_class_init
,
1533 * The Segment Registers of the AST2600 have a 1MB unit. The address
1534 * range of a flash SPI peripheral is encoded with offsets in the overall
1535 * controller window. The previous SoC AST2400 and AST2500 used
1536 * absolute addresses. Only bits [27:20] are relevant and the end
1537 * address is an upper bound limit.
1539 #define AST2600_SEG_ADDR_MASK 0x0ff00000
1541 static uint32_t aspeed_2600_smc_segment_to_reg(const AspeedSMCState
*s
,
1542 const AspeedSegments
*seg
)
1546 /* Disabled segments have a nil register */
1551 reg
|= (seg
->addr
& AST2600_SEG_ADDR_MASK
) >> 16; /* start offset */
1552 reg
|= (seg
->addr
+ seg
->size
- 1) & AST2600_SEG_ADDR_MASK
; /* end offset */
1556 static void aspeed_2600_smc_reg_to_segment(const AspeedSMCState
*s
,
1557 uint32_t reg
, AspeedSegments
*seg
)
1559 uint32_t start_offset
= (reg
<< 16) & AST2600_SEG_ADDR_MASK
;
1560 uint32_t end_offset
= reg
& AST2600_SEG_ADDR_MASK
;
1561 AspeedSMCClass
*asc
= ASPEED_SMC_GET_CLASS(s
);
1564 seg
->addr
= asc
->flash_window_base
+ start_offset
;
1565 seg
->size
= end_offset
+ MiB
- start_offset
;
1567 seg
->addr
= asc
->flash_window_base
;
1572 static const uint32_t aspeed_2600_fmc_resets
[ASPEED_SMC_R_MAX
] = {
1573 [R_CONF
] = (CONF_FLASH_TYPE_SPI
<< CONF_FLASH_TYPE0
|
1574 CONF_FLASH_TYPE_SPI
<< CONF_FLASH_TYPE1
|
1575 CONF_FLASH_TYPE_SPI
<< CONF_FLASH_TYPE2
),
1578 static const AspeedSegments aspeed_2600_fmc_segments
[] = {
1579 { 0x0, 128 * MiB
}, /* start address is readonly */
1580 { 128 * MiB
, 128 * MiB
}, /* default is disabled but needed for -kernel */
1581 { 0x0, 0 }, /* disabled */
1584 static void aspeed_2600_fmc_class_init(ObjectClass
*klass
, void *data
)
1586 DeviceClass
*dc
= DEVICE_CLASS(klass
);
1587 AspeedSMCClass
*asc
= ASPEED_SMC_CLASS(klass
);
1589 dc
->desc
= "Aspeed 2600 FMC Controller";
1590 asc
->r_conf
= R_CONF
;
1591 asc
->r_ce_ctrl
= R_CE_CTRL
;
1592 asc
->r_ctrl0
= R_CTRL0
;
1593 asc
->r_timings
= R_TIMINGS
;
1594 asc
->nregs_timings
= 1;
1595 asc
->conf_enable_w0
= CONF_ENABLE_W0
;
1596 asc
->max_peripherals
= 3;
1597 asc
->segments
= aspeed_2600_fmc_segments
;
1598 asc
->resets
= aspeed_2600_fmc_resets
;
1599 asc
->flash_window_base
= 0x20000000;
1600 asc
->flash_window_size
= 0x10000000;
1601 asc
->features
= ASPEED_SMC_FEATURE_DMA
|
1602 ASPEED_SMC_FEATURE_WDT_CONTROL
;
1603 asc
->dma_flash_mask
= 0x0FFFFFFC;
1604 asc
->dma_dram_mask
= 0x3FFFFFFC;
1605 asc
->nregs
= ASPEED_SMC_R_MAX
;
1606 asc
->segment_to_reg
= aspeed_2600_smc_segment_to_reg
;
1607 asc
->reg_to_segment
= aspeed_2600_smc_reg_to_segment
;
1608 asc
->dma_ctrl
= aspeed_2600_smc_dma_ctrl
;
1611 static const TypeInfo aspeed_2600_fmc_info
= {
1612 .name
= "aspeed.fmc-ast2600",
1613 .parent
= TYPE_ASPEED_SMC
,
1614 .class_init
= aspeed_2600_fmc_class_init
,
1617 static const AspeedSegments aspeed_2600_spi1_segments
[] = {
1618 { 0x0, 128 * MiB
}, /* start address is readonly */
1619 { 0x0, 0 }, /* disabled */
1622 static void aspeed_2600_spi1_class_init(ObjectClass
*klass
, void *data
)
1624 DeviceClass
*dc
= DEVICE_CLASS(klass
);
1625 AspeedSMCClass
*asc
= ASPEED_SMC_CLASS(klass
);
1627 dc
->desc
= "Aspeed 2600 SPI1 Controller";
1628 asc
->r_conf
= R_CONF
;
1629 asc
->r_ce_ctrl
= R_CE_CTRL
;
1630 asc
->r_ctrl0
= R_CTRL0
;
1631 asc
->r_timings
= R_TIMINGS
;
1632 asc
->nregs_timings
= 2;
1633 asc
->conf_enable_w0
= CONF_ENABLE_W0
;
1634 asc
->max_peripherals
= 2;
1635 asc
->segments
= aspeed_2600_spi1_segments
;
1636 asc
->flash_window_base
= 0x30000000;
1637 asc
->flash_window_size
= 0x10000000;
1638 asc
->features
= ASPEED_SMC_FEATURE_DMA
|
1639 ASPEED_SMC_FEATURE_DMA_GRANT
;
1640 asc
->dma_flash_mask
= 0x0FFFFFFC;
1641 asc
->dma_dram_mask
= 0x3FFFFFFC;
1642 asc
->nregs
= ASPEED_SMC_R_MAX
;
1643 asc
->segment_to_reg
= aspeed_2600_smc_segment_to_reg
;
1644 asc
->reg_to_segment
= aspeed_2600_smc_reg_to_segment
;
1645 asc
->dma_ctrl
= aspeed_2600_smc_dma_ctrl
;
1648 static const TypeInfo aspeed_2600_spi1_info
= {
1649 .name
= "aspeed.spi1-ast2600",
1650 .parent
= TYPE_ASPEED_SMC
,
1651 .class_init
= aspeed_2600_spi1_class_init
,
1654 static const AspeedSegments aspeed_2600_spi2_segments
[] = {
1655 { 0x0, 128 * MiB
}, /* start address is readonly */
1656 { 0x0, 0 }, /* disabled */
1657 { 0x0, 0 }, /* disabled */
1660 static void aspeed_2600_spi2_class_init(ObjectClass
*klass
, void *data
)
1662 DeviceClass
*dc
= DEVICE_CLASS(klass
);
1663 AspeedSMCClass
*asc
= ASPEED_SMC_CLASS(klass
);
1665 dc
->desc
= "Aspeed 2600 SPI2 Controller";
1666 asc
->r_conf
= R_CONF
;
1667 asc
->r_ce_ctrl
= R_CE_CTRL
;
1668 asc
->r_ctrl0
= R_CTRL0
;
1669 asc
->r_timings
= R_TIMINGS
;
1670 asc
->nregs_timings
= 3;
1671 asc
->conf_enable_w0
= CONF_ENABLE_W0
;
1672 asc
->max_peripherals
= 3;
1673 asc
->segments
= aspeed_2600_spi2_segments
;
1674 asc
->flash_window_base
= 0x50000000;
1675 asc
->flash_window_size
= 0x10000000;
1676 asc
->features
= ASPEED_SMC_FEATURE_DMA
|
1677 ASPEED_SMC_FEATURE_DMA_GRANT
;
1678 asc
->dma_flash_mask
= 0x0FFFFFFC;
1679 asc
->dma_dram_mask
= 0x3FFFFFFC;
1680 asc
->nregs
= ASPEED_SMC_R_MAX
;
1681 asc
->segment_to_reg
= aspeed_2600_smc_segment_to_reg
;
1682 asc
->reg_to_segment
= aspeed_2600_smc_reg_to_segment
;
1683 asc
->dma_ctrl
= aspeed_2600_smc_dma_ctrl
;
1686 static const TypeInfo aspeed_2600_spi2_info
= {
1687 .name
= "aspeed.spi2-ast2600",
1688 .parent
= TYPE_ASPEED_SMC
,
1689 .class_init
= aspeed_2600_spi2_class_init
,
1692 static void aspeed_smc_register_types(void)
1694 type_register_static(&aspeed_smc_flash_info
);
1695 type_register_static(&aspeed_smc_info
);
1696 type_register_static(&aspeed_2400_smc_info
);
1697 type_register_static(&aspeed_2400_fmc_info
);
1698 type_register_static(&aspeed_2400_spi1_info
);
1699 type_register_static(&aspeed_2500_fmc_info
);
1700 type_register_static(&aspeed_2500_spi1_info
);
1701 type_register_static(&aspeed_2500_spi2_info
);
1702 type_register_static(&aspeed_2600_fmc_info
);
1703 type_register_static(&aspeed_2600_spi1_info
);
1704 type_register_static(&aspeed_2600_spi2_info
);
1707 type_init(aspeed_smc_register_types
)