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-rw-r--r--include/asm-x86/olpc.h132
1 files changed, 132 insertions, 0 deletions
diff --git a/include/asm-x86/olpc.h b/include/asm-x86/olpc.h
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+++ b/include/asm-x86/olpc.h
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+/* OLPC machine specific definitions */
+
+#ifndef ASM_OLPC_H_
+#define ASM_OLPC_H_
+
+#include <asm/geode.h>
+
+struct olpc_platform_t {
+ int flags;
+ uint32_t boardrev;
+ int ecver;
+};
+
+#define OLPC_F_PRESENT 0x01
+#define OLPC_F_DCON 0x02
+#define OLPC_F_VSA 0x04
+
+#ifdef CONFIG_OLPC
+
+extern struct olpc_platform_t olpc_platform_info;
+
+/*
+ * OLPC board IDs contain the major build number within the mask 0x0ff0,
+ * and the minor build number withing 0x000f. Pre-builds have a minor
+ * number less than 8, and normal builds start at 8. For example, 0x0B10
+ * is a PreB1, and 0x0C18 is a C1.
+ */
+
+static inline uint32_t olpc_board(uint8_t id)
+{
+ return (id << 4) | 0x8;
+}
+
+static inline uint32_t olpc_board_pre(uint8_t id)
+{
+ return id << 4;
+}
+
+static inline int machine_is_olpc(void)
+{
+ return (olpc_platform_info.flags & OLPC_F_PRESENT) ? 1 : 0;
+}
+
+/*
+ * The DCON is OLPC's Display Controller. It has a number of unique
+ * features that we might want to take advantage of..
+ */
+static inline int olpc_has_dcon(void)
+{
+ return (olpc_platform_info.flags & OLPC_F_DCON) ? 1 : 0;
+}
+
+/*
+ * The VSA is software from AMD that typical Geode bioses will include.
+ * It is used to emulate the PCI bus, VGA, etc. OLPC's Open Firmware does
+ * not include the VSA; instead, PCI is emulated by the kernel.
+ *
+ * The VSA is described further in arch/x86/pci/olpc.c.
+ */
+static inline int olpc_has_vsa(void)
+{
+ return (olpc_platform_info.flags & OLPC_F_VSA) ? 1 : 0;
+}
+
+/*
+ * The "Mass Production" version of OLPC's XO is identified as being model
+ * C2. During the prototype phase, the following models (in chronological
+ * order) were created: A1, B1, B2, B3, B4, C1. The A1 through B2 models
+ * were based on Geode GX CPUs, and models after that were based upon
+ * Geode LX CPUs. There were also some hand-assembled models floating
+ * around, referred to as PreB1, PreB2, etc.
+ */
+static inline int olpc_board_at_least(uint32_t rev)
+{
+ return olpc_platform_info.boardrev >= rev;
+}
+
+#else
+
+static inline int machine_is_olpc(void)
+{
+ return 0;
+}
+
+static inline int olpc_has_dcon(void)
+{
+ return 0;
+}
+
+static inline int olpc_has_vsa(void)
+{
+ return 0;
+}
+
+#endif
+
+/* EC related functions */
+
+extern int olpc_ec_cmd(unsigned char cmd, unsigned char *inbuf, size_t inlen,
+ unsigned char *outbuf, size_t outlen);
+
+extern int olpc_ec_mask_set(uint8_t bits);
+extern int olpc_ec_mask_unset(uint8_t bits);
+
+/* EC commands */
+
+#define EC_FIRMWARE_REV 0x08
+
+/* SCI source values */
+
+#define EC_SCI_SRC_EMPTY 0x00
+#define EC_SCI_SRC_GAME 0x01
+#define EC_SCI_SRC_BATTERY 0x02
+#define EC_SCI_SRC_BATSOC 0x04
+#define EC_SCI_SRC_BATERR 0x08
+#define EC_SCI_SRC_EBOOK 0x10
+#define EC_SCI_SRC_WLAN 0x20
+#define EC_SCI_SRC_ACPWR 0x40
+#define EC_SCI_SRC_ALL 0x7F
+
+/* GPIO assignments */
+
+#define OLPC_GPIO_MIC_AC geode_gpio(1)
+#define OLPC_GPIO_DCON_IRQ geode_gpio(7)
+#define OLPC_GPIO_THRM_ALRM geode_gpio(10)
+#define OLPC_GPIO_SMB_CLK geode_gpio(14)
+#define OLPC_GPIO_SMB_DATA geode_gpio(15)
+#define OLPC_GPIO_WORKAUX geode_gpio(24)
+#define OLPC_GPIO_LID geode_gpio(26)
+#define OLPC_GPIO_ECSCI geode_gpio(27)
+
+#endif