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libpayload: Add x86_64 (64-bit) support

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This patch introduces x86_64 (64-bit) support to the payload, building
upon the existing x86 (32-bit) architecture. Files necessary for 64-bit
compilation are now guarded by the `CONFIG_LP_ARCH_X86_64` Kconfig
option.

BUG=b:242829490
TEST=Able to verify all valid combinations between coreboot and
payload with this patch.

Payload Entry Point Behavior with below code.

+----------------+--------------------+----------------------------+
| LP_ARCH_X86_64 | Payload Entry Mode | Description                |
+----------------+--------------------+----------------------------+
| No             | 32-bit             | Direct protected mode init |
+----------------+--------------------+----------------------------+
| Yes            | 32-bit             | Protected to long mode     |
+----------------+--------------------+----------------------------+
| Yes            | 64-bit             | Long mode initialization   |
+----------------+--------------------+----------------------------+

Change-Id: I69fda47bedf1a14807b1515c4aed6e3a1d5b8585
Signed-off-by: Subrata Banik <subratabanik@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/81968
Reviewed-by: Julius Werner <jwerner@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This commit is contained in:
Subrata Banik
2024-05-18 12:26:40 +00:00
parent 4244527d8c
commit afa39105d8
18 changed files with 686 additions and 58 deletions
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4
payloads/libpayload/drivers/storage/ahci_common.c
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@@ -66,7 +66,7 @@ static u8 *ahci_prdbuf_init(ahci_dev_t *const dev,
u8 *const user_buf, const size_t len,
const int out)
{
if ((u32)user_buf & 1) {
if ((uintptr_t)user_buf & 1) {
printf("ahci: Odd buffer pointer (%p).\n", user_buf);
if (dev->buf) /* orphaned buffer */
free(dev->buf - *(dev->buf - 1));
@@ -76,7 +76,7 @@ static u8 *ahci_prdbuf_init(ahci_dev_t *const dev,
dev->user_buf = user_buf;
dev->write_back = !out;
dev->buflen = len;
if ((u32)dev->buf & 1) {
if ((uintptr_t)dev->buf & 1) {
dev->buf[0] = 1;
dev->buf += 1;
} else {