efi: Share struct efi_priv between the app and stub code

At present each of these has its own static variable and helper functions.
Move them into a shared file.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>

diff --git a/include/efi.h b/include/efi.h
index ac50a9c8991366a2e6d2a877052c7d1fd2a4fab7..8c3f33246839321b5abd38eee9d8ce61cef6bb8d 100644 (file)
--- a/include/efi.h
+++ b/include/efi.h
@@ -474,6 +474,27 @@ extern char _binary_u_boot_bin_start[], _binary_u_boot_bin_end[];
                                EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS | \
                                EFI_VARIABLE_APPEND_WRITE)
 
+/**
+ * efi_get_priv() - Get access to the EFI-private information
+ *
+ * This struct it used by both the stub and the app to record things about the
+ * EFI environment. It is not available in U-Boot proper after the stub has
+ * jumped there. Use efi_info_get() to obtain info in that case.
+ *
+ * Return: pointer to private info
+ */
+struct efi_priv *efi_get_priv(void);
+
+/**
+ * efi_set_priv() - Set up a pointer to the EFI-private information
+ *
+ * This is called in the stub and app to record the location of this
+ * information.
+ *
+ * @priv: New location of private data
+ */
+void efi_set_priv(struct efi_priv *priv);
+
 /**
  * efi_get_sys_table() - Get access to the main EFI system table
  *

diff --git a/lib/efi/efi.c b/lib/efi/efi.c
index 69e52e457486af29ce04387c36fefe7c1d341aff..cd6bf47b18032a2a5cc65314bf15ad817222ae5f 100644 (file)
--- a/lib/efi/efi.c
+++ b/lib/efi/efi.c
@@ -1,5 +1,7 @@
 // SPDX-License-Identifier: GPL-2.0+
 /*
+ * Functions shared by the app and stub
+ *
  * Copyright (c) 2015 Google, Inc
  *
  * EFI information obtained here:
@@ -17,6 +19,33 @@
 #include <efi.h>
 #include <efi_api.h>
 
+static struct efi_priv *global_priv;
+
+struct efi_priv *efi_get_priv(void)
+{
+       return global_priv;
+}
+
+void efi_set_priv(struct efi_priv *priv)
+{
+       global_priv = priv;
+}
+
+struct efi_system_table *efi_get_sys_table(void)
+{
+       return global_priv->sys_table;
+}
+
+struct efi_boot_services *efi_get_boot(void)
+{
+       return global_priv->boot;
+}
+
+unsigned long efi_get_ram_base(void)
+{
+       return global_priv->ram_base;
+}
+
 /*
  * Global declaration of gd.
  *

diff --git a/lib/efi/efi_app.c b/lib/efi/efi_app.c
index 4a80633edf1a51ea5295e8b17e235b66f101261d..214cef943019b032a3cc880dea17c258cbc70570 100644 (file)
--- a/lib/efi/efi_app.c
+++ b/lib/efi/efi_app.c
@@ -27,23 +27,6 @@
 
 DECLARE_GLOBAL_DATA_PTR;
 
-static struct efi_priv *global_priv;
-
-struct efi_system_table *efi_get_sys_table(void)
-{
-       return global_priv->sys_table;
-}
-
-struct efi_boot_services *efi_get_boot(void)
-{
-       return global_priv->boot;
-}
-
-unsigned long efi_get_ram_base(void)
-{
-       return global_priv->ram_base;
-}
-
 int efi_info_get(enum efi_entry_t type, void **datap, int *sizep)
 {
        return -ENOSYS;
@@ -319,7 +302,7 @@ efi_status_t EFIAPI efi_main(efi_handle_t image,
        /* Set up access to EFI data structures */
        efi_init(priv, "App", image, sys_table);
 
-       global_priv = priv;
+       efi_set_priv(priv);
 
        /*
         * Set up the EFI debug UART so that printf() works. This is
@@ -345,7 +328,7 @@ efi_status_t EFIAPI efi_main(efi_handle_t image,
 
 static void efi_exit(void)
 {
-       struct efi_priv *priv = global_priv;
+       struct efi_priv *priv = efi_get_priv();
 
        free_memory(priv);
        printf("U-Boot EFI exiting\n");

diff --git a/lib/efi/efi_stub.c b/lib/efi/efi_stub.c
index 31f1e1a72a13b9562a164e83cd056a17c137bf71..c89ae7c907211c5fd1101d3de4e7efe225845bef 100644 (file)
--- a/lib/efi/efi_stub.c
+++ b/lib/efi/efi_stub.c
@@ -31,7 +31,6 @@
 #error "This file needs to be ported for use on architectures"
 #endif
 
-static struct efi_priv *global_priv;
 static bool use_uart;
 
 struct __packed desctab_info {
@@ -63,6 +62,8 @@ void _debug_uart_init(void)
 
 void putc(const char ch)
 {
+       struct efi_priv *priv = efi_get_priv();
+
        if (ch == '\n')
                putc('\r');
 
@@ -73,7 +74,7 @@ void putc(const char ch)
                        ;
                outb(ch, (ulong)&com_port->thr);
        } else {
-               efi_putc(global_priv, ch);
+               efi_putc(priv, ch);
        }
 }
 
@@ -320,7 +321,7 @@ efi_status_t EFIAPI efi_main(efi_handle_t image,
                puts(" efi_init() failed\n");
                return ret;
        }
-       global_priv = priv;
+       efi_set_priv(priv);
 
        cs32 = get_codeseg32();
        if (cs32 < 0)