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Merge patch series "bootflow: bootmeth_efi: Fix network efi boot."

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To quote the author:

Currently bootmeth_efi crashes while doing a network (dhcp) boot.
This patch series fixes issues and both network and disk boot works.

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This commit is contained in:
Tom Rini 2023-12-09 13:16:14 -05:00
commit dd29208815
2 changed files with 29 additions and 9 deletions
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36
boot/bootmeth_efi.c
View File

@ -160,7 +160,6 @@ static int efiload_read_file(struct bootflow *bflow, ulong addr)
if (ret)
return log_msg_ret("read", ret);
bflow->buf = map_sysmem(addr, bflow->size);
bflow->flags |= BOOTFLOWF_STATIC_BUF;
set_efi_bootdev(desc, bflow);
@ -313,6 +312,7 @@ static int distro_efi_try_bootflow_files(struct udevice *dev,
*/
} else {
log_debug("No device tree available\n");
bflow->flags |= BOOTFLOWF_USE_BUILTIN_FDT;
}
return 0;
@ -323,7 +323,7 @@ static int distro_efi_read_bootflow_net(struct bootflow *bflow)
char file_addr[17], fname[256];
char *tftp_argv[] = {"tftp", file_addr, fname, NULL};
struct cmd_tbl cmdtp = {}; /* dummy */
const char *addr_str, *fdt_addr_str;
const char *addr_str, *fdt_addr_str, *bootfile_name;
int ret, arch, size;
ulong addr, fdt_addr;
char str[36];
@ -339,7 +339,7 @@ static int distro_efi_read_bootflow_net(struct bootflow *bflow)
ret = env_set("bootp_vci", str);
if (ret)
return log_msg_ret("vcs", ret);
ret = env_set_ulong("bootp_arch", arch);
ret = env_set_hex("bootp_arch", arch);
if (ret)
return log_msg_ret("ars", ret);
@ -360,6 +360,12 @@ static int distro_efi_read_bootflow_net(struct bootflow *bflow)
return log_msg_ret("sz", -EINVAL);
bflow->size = size;
/* bootfile should be setup by dhcp*/
bootfile_name = env_get("bootfile");
if (!bootfile_name)
return log_msg_ret("bootfile_name", ret);
bflow->fname = strdup(bootfile_name);
/* do the hideous EFI hack */
efi_set_bootdev("Net", "", bflow->fname, map_sysmem(addr, 0),
bflow->size);
@ -385,6 +391,7 @@ static int distro_efi_read_bootflow_net(struct bootflow *bflow)
bflow->fdt_addr = fdt_addr;
} else {
log_debug("No device tree available\n");
bflow->flags |= BOOTFLOWF_USE_BUILTIN_FDT;
}
bflow->state = BOOTFLOWST_READY;
@ -396,6 +403,12 @@ static int distro_efi_read_bootflow(struct udevice *dev, struct bootflow *bflow)
{
int ret;
/*
* bootmeth_efi doesn't allocate any buffer neither for blk nor net device
* set flag to avoid freeing static buffer.
*/
bflow->flags |= BOOTFLOWF_STATIC_BUF;
if (bootmeth_uses_network(bflow)) {
/* we only support reading from one device, so ignore 'dev' */
ret = distro_efi_read_bootflow_net(bflow);
@ -423,13 +436,11 @@ static int distro_efi_boot(struct udevice *dev, struct bootflow *bflow)
return log_msg_ret("read", ret);
/*
* use the provided device tree if available, else fall back to
* the control FDT
* use the provided device tree if not using the built-in fdt
*/
if (bflow->fdt_fname)
if (bflow->flags & ~BOOTFLOWF_USE_BUILTIN_FDT)
fdt = bflow->fdt_addr;
else
fdt = (ulong)map_to_sysmem(gd->fdt_blob);
} else {
/*
* This doesn't actually work for network devices:
@ -446,7 +457,14 @@ static int distro_efi_boot(struct udevice *dev, struct bootflow *bflow)
* At some point we can add a real interface to bootefi so we can call
* this directly. For now, go through the CLI, like distro boot.
*/
snprintf(cmd, sizeof(cmd), "bootefi %lx %lx", kernel, fdt);
if (bflow->flags & BOOTFLOWF_USE_BUILTIN_FDT) {
log_debug("Booting with built-in fdt\n");
snprintf(cmd, sizeof(cmd), "bootefi %lx", kernel);
} else {
log_debug("Booting with external fdt\n");
snprintf(cmd, sizeof(cmd), "bootefi %lx %lx", kernel, fdt);
}
if (run_command(cmd, 0))
return log_msg_ret("run", -EINVAL);

2
include/bootflow.h
View File

@ -45,10 +45,12 @@ enum bootflow_state_t {
* CONFIG_OF_HAS_PRIOR_STAGE is enabled
* @BOOTFLOWF_STATIC_BUF: Indicates that @bflow->buf is statically set, rather
* than being allocated by malloc().
* @BOOTFLOWF_USE_BUILTIN_FDT : Indicates that current bootflow uses built-in FDT
*/
enum bootflow_flags_t {
BOOTFLOWF_USE_PRIOR_FDT = 1 << 0,
BOOTFLOWF_STATIC_BUF = 1 << 1,
BOOTFLOWF_USE_BUILTIN_FDT = 1 << 2,
};
/**