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09d40e0e08
Enforce full include path for includes. Deprecate old paths.
The following folders inside include/lib have been left unchanged:
- include/lib/cpus/${ARCH}
- include/lib/el3_runtime/${ARCH}
The reason for this change is that having a global namespace for
includes isn't a good idea. It defeats one of the advantages of having
folders and it introduces problems that are sometimes subtle (because
you may not know the header you are actually including if there are two
of them).
For example, this patch had to be created because two headers were
called the same way: e0ea0928d5 ("Fix gpio includes of mt8173 platform
to avoid collision."). More recently, this patch has had similar
problems: 46f9b2c3a2 ("drivers: add tzc380 support").
This problem was introduced in commit 4ecca33988 ("Move include and
source files to logical locations"). At that time, there weren't too
many headers so it wasn't a real issue. However, time has shown that
this creates problems.
Platforms that want to preserve the way they include headers may add the
removed paths to PLAT_INCLUDES, but this is discouraged.
Change-Id: I39dc53ed98f9e297a5966e723d1936d6ccf2fc8f
Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>
107 lines
2.4 KiB
C
107 lines
2.4 KiB
C
/*
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* Copyright (c) 2017, ARM Limited and Contributors. All rights reserved.
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#include <lib/mmio.h>
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#include <lib/utils_def.h>
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#include "uniphier.h"
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#define UNIPHIER_ROM_RSV3 0x5980120c
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#define UNIPHIER_STMBE2COM 0x5f800030
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#define UNIPHIER_STMTOBEIRQ 0x5f800060
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#define UNIPHIER_BETOSTMIRQ0PT 0x5f800070
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#define UNIPHIER_BEIRQCLRPT 0x5f800072
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#define UNIPHIER_SCP_READY_MAGIC 0x0000b6a5
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#define UNIPHIER_SCP_PACKET_START 0xA0
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#define UNIPHIER_SCP_PACKET_END 0xA5
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#define UNIPHIER_SCP_PACKET_ESC 0xA6
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#define UNIPHIER_SCP_IS_CTRL_CODE(c) (0xA0 <= (c) && (c) <= 0xA6)
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int uniphier_scp_is_running(void)
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{
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return mmio_read_32(UNIPHIER_STMBE2COM) == UNIPHIER_SCP_READY_MAGIC;
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}
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void uniphier_scp_start(void)
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{
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uint32_t tmp;
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mmio_write_32(UNIPHIER_STMBE2COM + 4, UNIPHIER_SCP_BASE);
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mmio_write_32(UNIPHIER_STMBE2COM, UNIPHIER_SCP_READY_MAGIC);
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do {
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tmp = mmio_read_32(UNIPHIER_ROM_RSV3);
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} while (!(tmp & BIT(8)));
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mmio_write_32(UNIPHIER_ROM_RSV3, tmp | BIT(9));
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}
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static void uniphier_scp_send_packet(const uint8_t *packet, int packet_len)
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{
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uintptr_t reg = UNIPHIER_STMBE2COM;
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uint32_t word;
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int len, i;
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while (packet_len) {
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len = MIN(packet_len, 4);
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word = 0;
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for (i = 0; i < len; i++)
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word |= *packet++ << (8 * i);
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mmio_write_32(reg, word);
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reg += 4;
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packet_len -= len;
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}
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mmio_write_8(UNIPHIER_BETOSTMIRQ0PT, 0x55);
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while (!(mmio_read_32(UNIPHIER_STMTOBEIRQ) & BIT(1)))
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;
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mmio_write_8(UNIPHIER_BEIRQCLRPT, BIT(1) | BIT(0));
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}
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static void uniphier_scp_send_cmd(const uint8_t *cmd, int cmd_len)
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{
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uint8_t packet[32]; /* long enough */
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uint8_t *p = packet;
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uint8_t c;
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int i;
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*p++ = UNIPHIER_SCP_PACKET_START;
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*p++ = cmd_len;
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for (i = 0; i < cmd_len; i++) {
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c = *cmd++;
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if (UNIPHIER_SCP_IS_CTRL_CODE(c)) {
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*p++ = UNIPHIER_SCP_PACKET_ESC;
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*p++ = c ^ BIT(7);
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} else {
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*p++ = c;
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}
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}
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*p++ = UNIPHIER_SCP_PACKET_END;
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uniphier_scp_send_packet(packet, p - packet);
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}
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#define UNIPHIER_SCP_CMD(name, ...) \
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static const uint8_t __uniphier_scp_##name##_cmd[] = { \
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__VA_ARGS__ \
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}; \
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void uniphier_scp_##name(void) \
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{ \
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uniphier_scp_send_cmd(__uniphier_scp_##name##_cmd, \
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ARRAY_SIZE(__uniphier_scp_##name##_cmd)); \
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}
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UNIPHIER_SCP_CMD(open_com, 0x00, 0x00, 0x05)
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UNIPHIER_SCP_CMD(system_off, 0x00, 0x01, 0xff, 0xff, 0xff, 0xff, 0x01)
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UNIPHIER_SCP_CMD(system_reset, 0x00, 0x02, 0x00)
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