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11#include <common.h>
12#include <cpu_func.h>
13#include <debug_uart.h>
14#include <dm.h>
15#include <errno.h>
16#include <init.h>
17#include <malloc.h>
18#include <asm/global_data.h>
19#include <linux/err.h>
20#include <linux/types.h>
21#include <efi.h>
22#include <efi_api.h>
23#include <sysreset.h>
24
25DECLARE_GLOBAL_DATA_PTR;
26
27static struct efi_priv *global_priv;
28
29struct efi_system_table *efi_get_sys_table(void)
30{
31 return global_priv->sys_table;
32}
33
34unsigned long efi_get_ram_base(void)
35{
36 return global_priv->ram_base;
37}
38
39static efi_status_t setup_memory(struct efi_priv *priv)
40{
41 struct efi_boot_services *boot = priv->boot;
42 efi_physical_addr_t addr;
43 efi_status_t ret;
44 int pages;
45
46
47
48
49
50
51 global_data_ptr = efi_malloc(priv, sizeof(struct global_data), &ret);
52 if (!global_data_ptr)
53 return ret;
54 memset(gd, '\0', sizeof(*gd));
55
56 gd->malloc_base = (ulong)efi_malloc(priv, CONFIG_VAL(SYS_MALLOC_F_LEN),
57 &ret);
58 if (!gd->malloc_base)
59 return ret;
60 pages = CONFIG_EFI_RAM_SIZE >> 12;
61
62
63
64
65
66 addr = 1ULL << 32;
67 ret = boot->allocate_pages(EFI_ALLOCATE_MAX_ADDRESS,
68 priv->image_data_type, pages, &addr);
69 if (ret) {
70 printf("(using pool %lx) ", ret);
71 priv->ram_base = (ulong)efi_malloc(priv, CONFIG_EFI_RAM_SIZE,
72 &ret);
73 if (!priv->ram_base)
74 return ret;
75 priv->use_pool_for_malloc = true;
76 } else {
77 priv->ram_base = addr;
78 }
79 gd->ram_size = pages << 12;
80
81 return 0;
82}
83
84static void free_memory(struct efi_priv *priv)
85{
86 struct efi_boot_services *boot = priv->boot;
87
88 if (priv->use_pool_for_malloc)
89 efi_free(priv, (void *)priv->ram_base);
90 else
91 boot->free_pages(priv->ram_base, gd->ram_size >> 12);
92
93 efi_free(priv, (void *)gd->malloc_base);
94 efi_free(priv, gd);
95 global_data_ptr = NULL;
96}
97
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103
104
105efi_status_t EFIAPI efi_main(efi_handle_t image,
106 struct efi_system_table *sys_table)
107{
108 struct efi_priv local_priv, *priv = &local_priv;
109 efi_status_t ret;
110
111
112 efi_init(priv, "App", image, sys_table);
113
114 global_priv = priv;
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119
120
121 debug_uart_init();
122
123 ret = setup_memory(priv);
124 if (ret) {
125 printf("Failed to set up memory: ret=%lx\n", ret);
126 return ret;
127 }
128
129 printf("starting\n");
130
131 board_init_f(GD_FLG_SKIP_RELOC);
132 board_init_r(NULL, 0);
133 free_memory(priv);
134
135 return EFI_SUCCESS;
136}
137
138static void efi_exit(void)
139{
140 struct efi_priv *priv = global_priv;
141
142 free_memory(priv);
143 printf("U-Boot EFI exiting\n");
144 priv->boot->exit(priv->parent_image, EFI_SUCCESS, 0, NULL);
145}
146
147static int efi_sysreset_request(struct udevice *dev, enum sysreset_t type)
148{
149 efi_exit();
150
151 return -EINPROGRESS;
152}
153
154static const struct udevice_id efi_sysreset_ids[] = {
155 { .compatible = "efi,reset" },
156 { }
157};
158
159static struct sysreset_ops efi_sysreset_ops = {
160 .request = efi_sysreset_request,
161};
162
163U_BOOT_DRIVER(efi_sysreset) = {
164 .name = "efi-sysreset",
165 .id = UCLASS_SYSRESET,
166 .of_match = efi_sysreset_ids,
167 .ops = &efi_sysreset_ops,
168};
169