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Merge "rcar_gen3: drivers: console: Treat log as device memory" into integration

This commit is contained in:
Manish Pandey 2020-12-08 23:02:36 +00:00 committed by TrustedFirmware Code Review
parent f0f3d3687b 605767475e
commit aa47d59d40
1 changed files with 22 additions and 15 deletions
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37
drivers/renesas/rcar/console/rcar_printf.c
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@ -1,5 +1,5 @@
/*
* Copyright (c) 2015-2019, Renesas Electronics Corporation. All rights reserved.
* Copyright (c) 2015-2020, Renesas Electronics Corporation. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
@ -19,11 +19,22 @@
#define INDEX_TIMER_COUNT (4U)
#define RCAR_LOG_HEAD (('T' << 0) | ('L' << 8) | ('O' << 16) | ('G' << 24))
/*
* The log is initialized and used before BL31 xlat tables are initialized,
* therefore the log memory is a device memory at that point. Make sure the
* memory is correclty aligned and accessed only with up-to 32bit, aligned,
* writes.
*/
CASSERT((RCAR_BL31_LOG_BASE & 0x7) == 0, assert_bl31_log_base_unaligned);
CASSERT((RCAR_BL31_LOG_MAX & 0x7) == 0, assert_bl31_log_max_unaligned);
extern RCAR_INSTANTIATE_LOCK typedef struct log_head {
uint8_t head[4];
uint32_t head;
uint32_t index;
uint32_t size;
uint8_t res[4];
uint32_t res;
} loghead_t;
typedef struct log_map {
@ -66,15 +77,12 @@ int32_t rcar_set_log_data(int32_t c)
int32_t rcar_log_init(void)
{
static const uint8_t const_header[] = "TLOG";
logmap_t *t_log;
logmap_t *t_log = (logmap_t *)RCAR_BL31_LOG_BASE;
uint32_t *log_data = (uint32_t *)t_log->log_data;
int16_t init_flag = 0;
int i;
t_log = (logmap_t *) RCAR_BL31_LOG_BASE;
if (memcmp
((const void *)t_log->header.head, (const void *)const_header,
sizeof(t_log->header.head)) != 0) {
if (t_log->header.head != RCAR_LOG_HEAD) {
/*
* Log header is not "TLOG", then log area initialize
*/
@ -87,11 +95,10 @@ int32_t rcar_log_init(void)
init_flag = 1;
}
if (init_flag == 1) {
(void)memset((void *)t_log->log_data, 0,
(size_t) RCAR_BL31_LOG_MAX);
(void)memcpy((void *)t_log->header.head,
(const void *)const_header,
sizeof(t_log->header.head));
for (i = 0; i < RCAR_BL31_LOG_MAX; i += 4)
*log_data++ = 0;
t_log->header.head = RCAR_LOG_HEAD;
t_log->header.index = 0U;
t_log->header.size = 0U;
}